4d0t: Difference between revisions
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4d0t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4d0t OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4d0t RCSB], [http://www.ebi.ac.uk/pdbsum/4d0t PDBsum]</span></td></tr> | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4d0t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4d0t OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4d0t RCSB], [http://www.ebi.ac.uk/pdbsum/4d0t PDBsum]</span></td></tr> | ||
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== Publication Abstract from PubMed == | |||
The retaining glycosyltransferase GalNAc-T2 is a member of a large family of human polypeptide GalNAc-transferases that is responsible for the post-translational modification of many cell-surface proteins. By the use of combined structural and computational approaches, we provide the first set of structural snapshots of the enzyme during the catalytic cycle and combine these with quantum-mechanics/molecular-mechanics (QM/MM) metadynamics to unravel the catalytic mechanism of this retaining enzyme at the atomic-electronic level of detail. Our study provides a detailed structural rationale for an ordered bi-bi kinetic mechanism and reveals critical aspects of substrate recognition, which dictate the specificity for acceptor Thr versus Ser residues and enforce a front-face SN i-type reaction in which the substrate N-acetyl sugar substituent coordinates efficient glycosyl transfer. | |||
Substrate-Guided Front-Face Reaction Revealed by Combined Structural Snapshots and Metadynamics for the Polypeptide N-Acetylgalactosaminyltransferase 2.,Lira-Navarrete E, Iglesias-Fernandez J, Zandberg WF, Companon I, Kong Y, Corzana F, Pinto BM, Clausen H, Peregrina JM, Vocadlo DJ, Rovira C, Hurtado-Guerrero R Angew Chem Int Ed Engl. 2014 Jun 20. doi: 10.1002/anie.201402781. PMID:24954443<ref>PMID:24954443</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
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== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Revision as of 09:14, 2 July 2014
GalNAc-T2 crystal soaked with UDP-GalNAc, EA2 peptide and manganeseGalNAc-T2 crystal soaked with UDP-GalNAc, EA2 peptide and manganese
Structural highlights
Publication Abstract from PubMedThe retaining glycosyltransferase GalNAc-T2 is a member of a large family of human polypeptide GalNAc-transferases that is responsible for the post-translational modification of many cell-surface proteins. By the use of combined structural and computational approaches, we provide the first set of structural snapshots of the enzyme during the catalytic cycle and combine these with quantum-mechanics/molecular-mechanics (QM/MM) metadynamics to unravel the catalytic mechanism of this retaining enzyme at the atomic-electronic level of detail. Our study provides a detailed structural rationale for an ordered bi-bi kinetic mechanism and reveals critical aspects of substrate recognition, which dictate the specificity for acceptor Thr versus Ser residues and enforce a front-face SN i-type reaction in which the substrate N-acetyl sugar substituent coordinates efficient glycosyl transfer. Substrate-Guided Front-Face Reaction Revealed by Combined Structural Snapshots and Metadynamics for the Polypeptide N-Acetylgalactosaminyltransferase 2.,Lira-Navarrete E, Iglesias-Fernandez J, Zandberg WF, Companon I, Kong Y, Corzana F, Pinto BM, Clausen H, Peregrina JM, Vocadlo DJ, Rovira C, Hurtado-Guerrero R Angew Chem Int Ed Engl. 2014 Jun 20. doi: 10.1002/anie.201402781. PMID:24954443[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)
OCA- Polypeptide N-acetylgalactosaminyltransferase
- Synthetic construct
- Clausen, H.
- Companon, I.
- Corzana, F.
- Hurtado-Guerrero, R.
- Iglesias-Fernandez, J.
- Kong, Y.
- Lira-Navarrete, E.
- Peregrina, J M.
- Pinto, B M.
- Rovira, C.
- Vocadlo, D.
- Zandberg, W F.
- Acetamido group
- Bi-bi kinetic mechanism
- Protein x-ray crystallography
- Qm/mm metadynamic
- Retaining galnac-t2
- Substrate specificity
- Substrate-guided sni-type reaction
- Transferase