Structure and dynamics of human and bacterial acyl carrier proteins and their interactions with fatty acid synthesis proteins
Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of che...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Park, Jungwoo [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2019transfer abstract |
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| Schlagwörter: |
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| Umfang: |
7 |
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| Übergeordnetes Werk: |
Enthalten in: Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag - Zhang, Zhikun ELSEVIER, 2019, BBRC, Orlando, Fla |
|---|---|
| Übergeordnetes Werk: |
volume:516 ; year:2019 ; number:4 ; day:3 ; month:09 ; pages:1183-1189 ; extent:7 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.bbrc.2019.07.018 |
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ELV047389435 |
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| 520 | |a Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. | ||
| 520 | |a Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. | ||
| 650 | 7 | |a Type I FAS |2 Elsevier | |
| 650 | 7 | |a Acyl carrier protein synthase |2 Elsevier | |
| 650 | 7 | |a Dynamics |2 Elsevier | |
| 650 | 7 | |a Acyl carrier protein |2 Elsevier | |
| 650 | 7 | |a Type II FAS |2 Elsevier | |
| 700 | 1 | |a Lee, Yeongjoon |4 oth | |
| 700 | 1 | |a Cheon, Dasom |4 oth | |
| 700 | 1 | |a Kim, Yangmee |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Academic Press |a Zhang, Zhikun ELSEVIER |t Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag |d 2019 |d BBRC |g Orlando, Fla |w (DE-627)ELV002811154 |
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10.1016/j.bbrc.2019.07.018 doi GBV00000000000693.pica (DE-627)ELV047389435 (ELSEVIER)S0006-291X(19)31354-3 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Park, Jungwoo verfasserin aut Structure and dynamics of human and bacterial acyl carrier proteins and their interactions with fatty acid synthesis proteins 2019transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Type I FAS Elsevier Acyl carrier protein synthase Elsevier Dynamics Elsevier Acyl carrier protein Elsevier Type II FAS Elsevier Lee, Yeongjoon oth Cheon, Dasom oth Kim, Yangmee oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:516 year:2019 number:4 day:3 month:09 pages:1183-1189 extent:7 https://doi.org/10.1016/j.bbrc.2019.07.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 516 2019 4 3 0903 1183-1189 7 |
| spelling |
10.1016/j.bbrc.2019.07.018 doi GBV00000000000693.pica (DE-627)ELV047389435 (ELSEVIER)S0006-291X(19)31354-3 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Park, Jungwoo verfasserin aut Structure and dynamics of human and bacterial acyl carrier proteins and their interactions with fatty acid synthesis proteins 2019transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Type I FAS Elsevier Acyl carrier protein synthase Elsevier Dynamics Elsevier Acyl carrier protein Elsevier Type II FAS Elsevier Lee, Yeongjoon oth Cheon, Dasom oth Kim, Yangmee oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:516 year:2019 number:4 day:3 month:09 pages:1183-1189 extent:7 https://doi.org/10.1016/j.bbrc.2019.07.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 516 2019 4 3 0903 1183-1189 7 |
| allfields_unstemmed |
10.1016/j.bbrc.2019.07.018 doi GBV00000000000693.pica (DE-627)ELV047389435 (ELSEVIER)S0006-291X(19)31354-3 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Park, Jungwoo verfasserin aut Structure and dynamics of human and bacterial acyl carrier proteins and their interactions with fatty acid synthesis proteins 2019transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Type I FAS Elsevier Acyl carrier protein synthase Elsevier Dynamics Elsevier Acyl carrier protein Elsevier Type II FAS Elsevier Lee, Yeongjoon oth Cheon, Dasom oth Kim, Yangmee oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:516 year:2019 number:4 day:3 month:09 pages:1183-1189 extent:7 https://doi.org/10.1016/j.bbrc.2019.07.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 516 2019 4 3 0903 1183-1189 7 |
| allfieldsGer |
10.1016/j.bbrc.2019.07.018 doi GBV00000000000693.pica (DE-627)ELV047389435 (ELSEVIER)S0006-291X(19)31354-3 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Park, Jungwoo verfasserin aut Structure and dynamics of human and bacterial acyl carrier proteins and their interactions with fatty acid synthesis proteins 2019transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Type I FAS Elsevier Acyl carrier protein synthase Elsevier Dynamics Elsevier Acyl carrier protein Elsevier Type II FAS Elsevier Lee, Yeongjoon oth Cheon, Dasom oth Kim, Yangmee oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:516 year:2019 number:4 day:3 month:09 pages:1183-1189 extent:7 https://doi.org/10.1016/j.bbrc.2019.07.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 516 2019 4 3 0903 1183-1189 7 |
| allfieldsSound |
10.1016/j.bbrc.2019.07.018 doi GBV00000000000693.pica (DE-627)ELV047389435 (ELSEVIER)S0006-291X(19)31354-3 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Park, Jungwoo verfasserin aut Structure and dynamics of human and bacterial acyl carrier proteins and their interactions with fatty acid synthesis proteins 2019transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. Type I FAS Elsevier Acyl carrier protein synthase Elsevier Dynamics Elsevier Acyl carrier protein Elsevier Type II FAS Elsevier Lee, Yeongjoon oth Cheon, Dasom oth Kim, Yangmee oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:516 year:2019 number:4 day:3 month:09 pages:1183-1189 extent:7 https://doi.org/10.1016/j.bbrc.2019.07.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 516 2019 4 3 0903 1183-1189 7 |
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Enthalten in Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag Orlando, Fla volume:516 year:2019 number:4 day:3 month:09 pages:1183-1189 extent:7 |
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structure and dynamics of human and bacterial acyl carrier proteins and their interactions with fatty acid synthesis proteins |
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Structure and dynamics of human and bacterial acyl carrier proteins and their interactions with fatty acid synthesis proteins |
| abstract |
Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. |
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Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. |
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Acyl carrier protein (ACP) is highly conserved across taxa and plays key roles in the fatty acid synthesis system by mediating acyl group delivery and shuttling. Here, we compared the structural and dynamic features of human type Ι ACP (hACP) and Escherichia coli type II ACP (EcACP). Analysis of chemical shift perturbations upon octanoyl group attachment showed perturbations in hACP only near acyl-group attachment sites, whereas EcACP showed the perturbation at residues in the hydrophobic cavity. This difference confirmed that hACP does not sequester the acyl chain in the hydrophobic cavity, which is blocked by hydrophobic triad residues (L34, L39, and V64). Moreover, hACP showed more flexible backbone dynamics than EcACP, especially in the front of α1α2 loop. We further investigated the interactions of hACP with Streptomyces coelicolor ACP synthase (ScAcpS), which is used to convert apo mammalian ACP to the holo form. Similar to protein-protein interface (PPI) found in hACP-hAcpS crystal structure, docking simulation and binding affinity measurements showed that the hydrophobic residues in universal recognition helix II of hACP contribute mainly to ScAcpS binding with binding affinity of 9.2 ± 9.1 × 104 M. In contrast, interaction found in EcACP-EcAcpS crystal structure is dominated by electrostatic interactions. These results suggest that ScAcpS has relatively relaxed substrate specificity and a similar charge distribution to hAcpS. These fundamental differences of the charge distribution in hAcpS, ScAcpS and EcAcpS largely affect the interaction with hACP. These findings can provide a useful resource for development of novel antibiotics inhibiting PPI in bacterial FAS proteins with specificity. |
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