Architecture of the active post‐translational Sec translocon
Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a special...
Ausführliche Beschreibung
Autor*in: |
Weng, Tsai‐Hsuan [verfasserIn] Steinchen, Wieland [verfasserIn] Beatrix, Birgitta [verfasserIn] Berninghausen, Otto [verfasserIn] Becker, Thomas [verfasserIn] Bange, Gert [verfasserIn] Cheng, Jingdong [verfasserIn] Beckmann, Roland [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2020 |
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Anmerkung: |
© The Author(s) 2020 |
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Übergeordnetes Werk: |
Enthalten in: The EMBO Journal - Nature Publishing Group UK, 2023, 40(2020), 3 vom: 11. Dez. |
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Übergeordnetes Werk: |
volume:40 ; year:2020 ; number:3 ; day:11 ; month:12 |
Links: |
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DOI / URN: |
10.15252/embj.2020105643 |
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Katalog-ID: |
SPR058020683 |
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520 | |a Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. | ||
520 | |a SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. | ||
520 | |a Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. | ||
650 | 4 | |a post‐translational translocation |7 (dpeaa)DE-He213 | |
650 | 4 | |a protein translocation |7 (dpeaa)DE-He213 | |
650 | 4 | |a sec complex |7 (dpeaa)DE-He213 | |
650 | 4 | |a signal sequence |7 (dpeaa)DE-He213 | |
700 | 1 | |a Steinchen, Wieland |e verfasserin |4 aut | |
700 | 1 | |a Beatrix, Birgitta |e verfasserin |4 aut | |
700 | 1 | |a Berninghausen, Otto |e verfasserin |4 aut | |
700 | 1 | |a Becker, Thomas |e verfasserin |0 (orcid)0000-0001-8458-2738 |4 aut | |
700 | 1 | |a Bange, Gert |e verfasserin |0 (orcid)0000-0002-7826-0932 |4 aut | |
700 | 1 | |a Cheng, Jingdong |e verfasserin |0 (orcid)0000-0003-4442-377X |4 aut | |
700 | 1 | |a Beckmann, Roland |e verfasserin |0 (orcid)0000-0003-4291-3898 |4 aut | |
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10.15252/embj.2020105643 doi (DE-627)SPR058020683 (SPR)embj.2020105643-e DE-627 ger DE-627 rakwb eng Weng, Tsai‐Hsuan verfasserin (orcid)0000-0002-3708-6384 aut Architecture of the active post‐translational Sec translocon 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2020 Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. post‐translational translocation (dpeaa)DE-He213 protein translocation (dpeaa)DE-He213 sec complex (dpeaa)DE-He213 signal sequence (dpeaa)DE-He213 Steinchen, Wieland verfasserin aut Beatrix, Birgitta verfasserin aut Berninghausen, Otto verfasserin aut Becker, Thomas verfasserin (orcid)0000-0001-8458-2738 aut Bange, Gert verfasserin (orcid)0000-0002-7826-0932 aut Cheng, Jingdong verfasserin (orcid)0000-0003-4442-377X aut Beckmann, Roland verfasserin (orcid)0000-0003-4291-3898 aut Enthalten in The EMBO Journal Nature Publishing Group UK, 2023 40(2020), 3 vom: 11. Dez. (DE-627)266022529 (DE-600)1467419-1 1460-2075 nnns volume:40 year:2020 number:3 day:11 month:12 https://dx.doi.org/10.15252/embj.2020105643 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_72 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_168 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_211 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_266 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4029 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4155 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4311 GBV_ILN_4313 GBV_ILN_4314 GBV_ILN_4318 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4598 GBV_ILN_4700 AR 40 2020 3 11 12 |
spelling |
10.15252/embj.2020105643 doi (DE-627)SPR058020683 (SPR)embj.2020105643-e DE-627 ger DE-627 rakwb eng Weng, Tsai‐Hsuan verfasserin (orcid)0000-0002-3708-6384 aut Architecture of the active post‐translational Sec translocon 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2020 Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. post‐translational translocation (dpeaa)DE-He213 protein translocation (dpeaa)DE-He213 sec complex (dpeaa)DE-He213 signal sequence (dpeaa)DE-He213 Steinchen, Wieland verfasserin aut Beatrix, Birgitta verfasserin aut Berninghausen, Otto verfasserin aut Becker, Thomas verfasserin (orcid)0000-0001-8458-2738 aut Bange, Gert verfasserin (orcid)0000-0002-7826-0932 aut Cheng, Jingdong verfasserin (orcid)0000-0003-4442-377X aut Beckmann, Roland verfasserin (orcid)0000-0003-4291-3898 aut Enthalten in The EMBO Journal Nature Publishing Group UK, 2023 40(2020), 3 vom: 11. Dez. (DE-627)266022529 (DE-600)1467419-1 1460-2075 nnns volume:40 year:2020 number:3 day:11 month:12 https://dx.doi.org/10.15252/embj.2020105643 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_72 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_168 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_211 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_266 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4029 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4155 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4311 GBV_ILN_4313 GBV_ILN_4314 GBV_ILN_4318 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4598 GBV_ILN_4700 AR 40 2020 3 11 12 |
allfields_unstemmed |
10.15252/embj.2020105643 doi (DE-627)SPR058020683 (SPR)embj.2020105643-e DE-627 ger DE-627 rakwb eng Weng, Tsai‐Hsuan verfasserin (orcid)0000-0002-3708-6384 aut Architecture of the active post‐translational Sec translocon 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2020 Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. post‐translational translocation (dpeaa)DE-He213 protein translocation (dpeaa)DE-He213 sec complex (dpeaa)DE-He213 signal sequence (dpeaa)DE-He213 Steinchen, Wieland verfasserin aut Beatrix, Birgitta verfasserin aut Berninghausen, Otto verfasserin aut Becker, Thomas verfasserin (orcid)0000-0001-8458-2738 aut Bange, Gert verfasserin (orcid)0000-0002-7826-0932 aut Cheng, Jingdong verfasserin (orcid)0000-0003-4442-377X aut Beckmann, Roland verfasserin (orcid)0000-0003-4291-3898 aut Enthalten in The EMBO Journal Nature Publishing Group UK, 2023 40(2020), 3 vom: 11. Dez. (DE-627)266022529 (DE-600)1467419-1 1460-2075 nnns volume:40 year:2020 number:3 day:11 month:12 https://dx.doi.org/10.15252/embj.2020105643 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_72 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_168 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_211 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_266 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4029 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4155 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4311 GBV_ILN_4313 GBV_ILN_4314 GBV_ILN_4318 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4598 GBV_ILN_4700 AR 40 2020 3 11 12 |
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10.15252/embj.2020105643 doi (DE-627)SPR058020683 (SPR)embj.2020105643-e DE-627 ger DE-627 rakwb eng Weng, Tsai‐Hsuan verfasserin (orcid)0000-0002-3708-6384 aut Architecture of the active post‐translational Sec translocon 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2020 Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. post‐translational translocation (dpeaa)DE-He213 protein translocation (dpeaa)DE-He213 sec complex (dpeaa)DE-He213 signal sequence (dpeaa)DE-He213 Steinchen, Wieland verfasserin aut Beatrix, Birgitta verfasserin aut Berninghausen, Otto verfasserin aut Becker, Thomas verfasserin (orcid)0000-0001-8458-2738 aut Bange, Gert verfasserin (orcid)0000-0002-7826-0932 aut Cheng, Jingdong verfasserin (orcid)0000-0003-4442-377X aut Beckmann, Roland verfasserin (orcid)0000-0003-4291-3898 aut Enthalten in The EMBO Journal Nature Publishing Group UK, 2023 40(2020), 3 vom: 11. Dez. (DE-627)266022529 (DE-600)1467419-1 1460-2075 nnns volume:40 year:2020 number:3 day:11 month:12 https://dx.doi.org/10.15252/embj.2020105643 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_72 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_168 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_211 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_266 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4029 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4155 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4311 GBV_ILN_4313 GBV_ILN_4314 GBV_ILN_4318 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4598 GBV_ILN_4700 AR 40 2020 3 11 12 |
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10.15252/embj.2020105643 doi (DE-627)SPR058020683 (SPR)embj.2020105643-e DE-627 ger DE-627 rakwb eng Weng, Tsai‐Hsuan verfasserin (orcid)0000-0002-3708-6384 aut Architecture of the active post‐translational Sec translocon 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2020 Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. post‐translational translocation (dpeaa)DE-He213 protein translocation (dpeaa)DE-He213 sec complex (dpeaa)DE-He213 signal sequence (dpeaa)DE-He213 Steinchen, Wieland verfasserin aut Beatrix, Birgitta verfasserin aut Berninghausen, Otto verfasserin aut Becker, Thomas verfasserin (orcid)0000-0001-8458-2738 aut Bange, Gert verfasserin (orcid)0000-0002-7826-0932 aut Cheng, Jingdong verfasserin (orcid)0000-0003-4442-377X aut Beckmann, Roland verfasserin (orcid)0000-0003-4291-3898 aut Enthalten in The EMBO Journal Nature Publishing Group UK, 2023 40(2020), 3 vom: 11. Dez. (DE-627)266022529 (DE-600)1467419-1 1460-2075 nnns volume:40 year:2020 number:3 day:11 month:12 https://dx.doi.org/10.15252/embj.2020105643 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_72 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_168 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_211 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_266 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4029 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4155 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4311 GBV_ILN_4313 GBV_ILN_4314 GBV_ILN_4318 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4598 GBV_ILN_4700 AR 40 2020 3 11 12 |
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Weng, Tsai‐Hsuan @@aut@@ Steinchen, Wieland @@aut@@ Beatrix, Birgitta @@aut@@ Berninghausen, Otto @@aut@@ Becker, Thomas @@aut@@ Bange, Gert @@aut@@ Cheng, Jingdong @@aut@@ Beckmann, Roland @@aut@@ |
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Weng, Tsai‐Hsuan |
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Weng, Tsai‐Hsuan misc post‐translational translocation misc protein translocation misc sec complex misc signal sequence Architecture of the active post‐translational Sec translocon |
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Architecture of the active post‐translational Sec translocon post‐translational translocation (dpeaa)DE-He213 protein translocation (dpeaa)DE-He213 sec complex (dpeaa)DE-He213 signal sequence (dpeaa)DE-He213 |
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Architecture of the active post‐translational Sec translocon |
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architecture of the active post‐translational sec translocon |
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Architecture of the active post‐translational Sec translocon |
abstract |
Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. © The Author(s) 2020 |
abstractGer |
Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. © The Author(s) 2020 |
abstract_unstemmed |
Abstract In eukaryotes, most secretory and membrane proteins are targeted by an N‐terminal signal sequence to the endoplasmic reticulum, where the trimeric Sec61 complex serves as protein‐conducting channel (PCC). In the post‐translational mode, fully synthesized proteins are recognized by a specialized channel additionally containing the Sec62, Sec63, Sec71, and Sec72 subunits. Recent structures of this Sec complex in the idle state revealed the overall architecture in a pre‐opened state. Here, we present a cryo‐EM structure of the yeast Sec complex bound to a substrate, and a crystal structure of the Sec62 cytosolic domain. The signal sequence is inserted into the lateral gate of Sec61α similar to previous structures, yet, with the gate adopting an even more open conformation. The signal sequence is flanked by two Sec62 transmembrane helices, the cytoplasmic N‐terminal domain of Sec62 is more rigidly positioned, and the plug domain is relocated. We crystallized the Sec62 domain and mapped its interaction with the C‐terminus of Sec63. Together, we obtained a near‐complete and integrated model of the active Sec complex. SYNOPSIS The overall architecture of the eukaryotic SecY/Sec61 channel for post‐translational protein translocation, and how it recognizes N‐terminal signal sequences in transported proteins, remain unclear. Here, structural analyses reveal the molecular architecture of the engaged yeast Sec complex, which binds the signal sequence in a unique open conformation. Cryo‐EM structures of the heptameric Sec complex reveal the conformational transition from the partially open apo‐state to the fully open signal sequence‐bound state.The signal sequence binds the lateral gate of the Sec61 complex, which is stabilized by the transmembrane helices of the Sec62 subunit.The X‐ray structure of the N‐terminal cytoplasmic domain of Sec62 reveals a novel fold that is coordinated by the phosphorylated C‐terminal peptide of the Sec63 subunit. Graphical Abstract Cryo‐electron microscopy and X‐ray crystallography studies reveal the molecular architecture of the engaged eukaryotic heptameric Sec complex, binding the protein signal sequence in an open conformation. © The Author(s) 2020 |
collection_details |
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container_issue |
3 |
title_short |
Architecture of the active post‐translational Sec translocon |
url |
https://dx.doi.org/10.15252/embj.2020105643 |
remote_bool |
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author2 |
Steinchen, Wieland Beatrix, Birgitta Berninghausen, Otto Becker, Thomas Bange, Gert Cheng, Jingdong Beckmann, Roland |
author2Str |
Steinchen, Wieland Beatrix, Birgitta Berninghausen, Otto Becker, Thomas Bange, Gert Cheng, Jingdong Beckmann, Roland |
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266022529 |
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c |
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hochschulschrift_bool |
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doi_str |
10.15252/embj.2020105643 |
up_date |
2024-10-24T04:55:38.564Z |
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score |
7.3974237 |