High-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity
Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of g...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Yeo, K.Y. Benjamin [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016transfer abstract |
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| Schlagwörter: |
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| Umfang: |
8 |
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| Übergeordnetes Werk: |
Enthalten in: Informing policy to protect coastal coral reefs: Insight from a global review of reducing agricultural pollution to coastal ecosystems - Kroon, Frederieke J. ELSEVIER, 2014, methods in the biological sciences, San Diego, Calif |
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| Übergeordnetes Werk: |
volume:510 ; year:2016 ; day:1 ; month:10 ; pages:106-113 ; extent:8 |
| Links: |
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| DOI / URN: |
10.1016/j.ab.2016.06.009 |
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ELV035561459 |
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| 245 | 1 | 0 | |a High-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity |
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| 520 | |a Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. | ||
| 520 | |a Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. | ||
| 650 | 7 | |a Macroheterogeneity |2 Elsevier | |
| 650 | 7 | |a Glycosylation |2 Elsevier | |
| 650 | 7 | |a Oligosaccharyltransferase |2 Elsevier | |
| 650 | 7 | |a Mass spectrometry |2 Elsevier | |
| 650 | 7 | |a Data-independent acquisition |2 Elsevier | |
| 700 | 1 | |a Chrysanthopoulos, Panagiotis K. |4 oth | |
| 700 | 1 | |a Nouwens, Amanda S. |4 oth | |
| 700 | 1 | |a Marcellin, Esteban |4 oth | |
| 700 | 1 | |a Schulz, Benjamin L. |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Kroon, Frederieke J. ELSEVIER |t Informing policy to protect coastal coral reefs: Insight from a global review of reducing agricultural pollution to coastal ecosystems |d 2014 |d methods in the biological sciences |g San Diego, Calif |w (DE-627)ELV018040411 |
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10.1016/j.ab.2016.06.009 doi GBVA2016020000017.pica (DE-627)ELV035561459 (ELSEVIER)S0003-2697(16)30136-1 DE-627 ger DE-627 rakwb eng 570 540 570 DE-600 540 DE-600 550 VZ 333.7 VZ 610 VZ 15,3 ssgn PHARM DE-84 fid 44.40 bkl Yeo, K.Y. Benjamin verfasserin aut High-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Macroheterogeneity Elsevier Glycosylation Elsevier Oligosaccharyltransferase Elsevier Mass spectrometry Elsevier Data-independent acquisition Elsevier Chrysanthopoulos, Panagiotis K. oth Nouwens, Amanda S. oth Marcellin, Esteban oth Schulz, Benjamin L. oth Enthalten in Elsevier Kroon, Frederieke J. ELSEVIER Informing policy to protect coastal coral reefs: Insight from a global review of reducing agricultural pollution to coastal ecosystems 2014 methods in the biological sciences San Diego, Calif (DE-627)ELV018040411 volume:510 year:2016 day:1 month:10 pages:106-113 extent:8 https://doi.org/10.1016/j.ab.2016.06.009 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.40 Pharmazie Pharmazeutika VZ AR 510 2016 1 1001 106-113 8 045F 570 |
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10.1016/j.ab.2016.06.009 doi GBVA2016020000017.pica (DE-627)ELV035561459 (ELSEVIER)S0003-2697(16)30136-1 DE-627 ger DE-627 rakwb eng 570 540 570 DE-600 540 DE-600 550 VZ 333.7 VZ 610 VZ 15,3 ssgn PHARM DE-84 fid 44.40 bkl Yeo, K.Y. Benjamin verfasserin aut High-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Macroheterogeneity Elsevier Glycosylation Elsevier Oligosaccharyltransferase Elsevier Mass spectrometry Elsevier Data-independent acquisition Elsevier Chrysanthopoulos, Panagiotis K. oth Nouwens, Amanda S. oth Marcellin, Esteban oth Schulz, Benjamin L. oth Enthalten in Elsevier Kroon, Frederieke J. ELSEVIER Informing policy to protect coastal coral reefs: Insight from a global review of reducing agricultural pollution to coastal ecosystems 2014 methods in the biological sciences San Diego, Calif (DE-627)ELV018040411 volume:510 year:2016 day:1 month:10 pages:106-113 extent:8 https://doi.org/10.1016/j.ab.2016.06.009 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.40 Pharmazie Pharmazeutika VZ AR 510 2016 1 1001 106-113 8 045F 570 |
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10.1016/j.ab.2016.06.009 doi GBVA2016020000017.pica (DE-627)ELV035561459 (ELSEVIER)S0003-2697(16)30136-1 DE-627 ger DE-627 rakwb eng 570 540 570 DE-600 540 DE-600 550 VZ 333.7 VZ 610 VZ 15,3 ssgn PHARM DE-84 fid 44.40 bkl Yeo, K.Y. Benjamin verfasserin aut High-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Macroheterogeneity Elsevier Glycosylation Elsevier Oligosaccharyltransferase Elsevier Mass spectrometry Elsevier Data-independent acquisition Elsevier Chrysanthopoulos, Panagiotis K. oth Nouwens, Amanda S. oth Marcellin, Esteban oth Schulz, Benjamin L. oth Enthalten in Elsevier Kroon, Frederieke J. ELSEVIER Informing policy to protect coastal coral reefs: Insight from a global review of reducing agricultural pollution to coastal ecosystems 2014 methods in the biological sciences San Diego, Calif (DE-627)ELV018040411 volume:510 year:2016 day:1 month:10 pages:106-113 extent:8 https://doi.org/10.1016/j.ab.2016.06.009 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.40 Pharmazie Pharmazeutika VZ AR 510 2016 1 1001 106-113 8 045F 570 |
| allfieldsGer |
10.1016/j.ab.2016.06.009 doi GBVA2016020000017.pica (DE-627)ELV035561459 (ELSEVIER)S0003-2697(16)30136-1 DE-627 ger DE-627 rakwb eng 570 540 570 DE-600 540 DE-600 550 VZ 333.7 VZ 610 VZ 15,3 ssgn PHARM DE-84 fid 44.40 bkl Yeo, K.Y. Benjamin verfasserin aut High-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Macroheterogeneity Elsevier Glycosylation Elsevier Oligosaccharyltransferase Elsevier Mass spectrometry Elsevier Data-independent acquisition Elsevier Chrysanthopoulos, Panagiotis K. oth Nouwens, Amanda S. oth Marcellin, Esteban oth Schulz, Benjamin L. oth Enthalten in Elsevier Kroon, Frederieke J. ELSEVIER Informing policy to protect coastal coral reefs: Insight from a global review of reducing agricultural pollution to coastal ecosystems 2014 methods in the biological sciences San Diego, Calif (DE-627)ELV018040411 volume:510 year:2016 day:1 month:10 pages:106-113 extent:8 https://doi.org/10.1016/j.ab.2016.06.009 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.40 Pharmazie Pharmazeutika VZ AR 510 2016 1 1001 106-113 8 045F 570 |
| allfieldsSound |
10.1016/j.ab.2016.06.009 doi GBVA2016020000017.pica (DE-627)ELV035561459 (ELSEVIER)S0003-2697(16)30136-1 DE-627 ger DE-627 rakwb eng 570 540 570 DE-600 540 DE-600 550 VZ 333.7 VZ 610 VZ 15,3 ssgn PHARM DE-84 fid 44.40 bkl Yeo, K.Y. Benjamin verfasserin aut High-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity 2016transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. Macroheterogeneity Elsevier Glycosylation Elsevier Oligosaccharyltransferase Elsevier Mass spectrometry Elsevier Data-independent acquisition Elsevier Chrysanthopoulos, Panagiotis K. oth Nouwens, Amanda S. oth Marcellin, Esteban oth Schulz, Benjamin L. oth Enthalten in Elsevier Kroon, Frederieke J. ELSEVIER Informing policy to protect coastal coral reefs: Insight from a global review of reducing agricultural pollution to coastal ecosystems 2014 methods in the biological sciences San Diego, Calif (DE-627)ELV018040411 volume:510 year:2016 day:1 month:10 pages:106-113 extent:8 https://doi.org/10.1016/j.ab.2016.06.009 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.40 Pharmazie Pharmazeutika VZ AR 510 2016 1 1001 106-113 8 045F 570 |
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high-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity |
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High-performance targeted mass spectrometry with precision data-independent acquisition reveals site-specific glycosylation macroheterogeneity |
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Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. |
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Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. |
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Protein glycosylation is a critical post-translational modification that regulates the structure, stability, and function of many proteins. Mass spectrometry is currently the preferred method for qualitative and quantitative characterization of glycosylation. However, the inherent heterogeneity of glycosylation makes its analysis difficult. Quantification of glycosylation occupancy, or macroheterogeneity, has proven to be especially challenging. Here, we used a variation of high-resolution multiple reaction monitoring (MRMHR) or pseudo-MRM for targeted data-independent acquisition that we term SWAT (sequential window acquisition of targeted fragment ions). We compared the analytical performance of SWATH (sequential window acquisition of all theoretical fragment ions), SWAT, and SRM (selected reaction monitoring) using a suite of synthetic peptides spiked at various concentrations into a complex yeast tryptic digest sample. SWAT provided superior analytical performance to SWATH in a targeted approach. We then used SWAT to measure site-specific N-glycosylation occupancy in cell wall glycoproteins from yeast with defects in the glycosylation biosynthetic machinery. SWAT provided robust measurement of occupancy at more N-glycosylation sites and with higher precision than SWATH, allowing identification of novel glycosylation sites dependent on the Ost3p and Ost6p regulatory subunits of oligosaccharyltransferase. |
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ELSEVIER</subfield><subfield code="t">Informing policy to protect coastal coral reefs: Insight from a global review of reducing agricultural pollution to coastal ecosystems</subfield><subfield code="d">2014</subfield><subfield code="d">methods in the biological sciences</subfield><subfield code="g">San Diego, Calif</subfield><subfield code="w">(DE-627)ELV018040411</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:510</subfield><subfield code="g">year:2016</subfield><subfield code="g">day:1</subfield><subfield code="g">month:10</subfield><subfield code="g">pages:106-113</subfield><subfield code="g">extent:8</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.ab.2016.06.009</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">FID-PHARM</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-PHA</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">44.40</subfield><subfield code="j">Pharmazie</subfield><subfield code="j">Pharmazeutika</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">510</subfield><subfield code="j">2016</subfield><subfield code="b">1</subfield><subfield code="c">1001</subfield><subfield code="h">106-113</subfield><subfield code="g">8</subfield></datafield><datafield tag="953" ind1=" " ind2=" "><subfield code="2">045F</subfield><subfield code="a">570</subfield></datafield></record></collection>
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