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| | <StructureSection load='6yuv' size='340' side='right'caption='[[6yuv]], [[Resolution|resolution]] 2.00Å' scene=''> | | <StructureSection load='6yuv' size='340' side='right'caption='[[6yuv]], [[Resolution|resolution]] 2.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6yuv]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Neimd Neimd]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6YUV OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6YUV FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6yuv]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Neisseria_meningitidis_serogroup_A Neisseria meningitidis serogroup A]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6YUV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6YUV FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=PGE:TRIETHYLENE+GLYCOL'>PGE</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">sacC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=65699 NEIMD])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=PGE:TRIETHYLENE+GLYCOL'>PGE</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6yuv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6yuv OCA], [http://pdbe.org/6yuv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6yuv RCSB], [http://www.ebi.ac.uk/pdbsum/6yuv PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6yuv ProSAT]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6yuv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6yuv OCA], [https://pdbe.org/6yuv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6yuv RCSB], [https://www.ebi.ac.uk/pdbsum/6yuv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6yuv ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/O68216_NEIMD O68216_NEIMD] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Neimd]] | + | [[Category: Neisseria meningitidis serogroup A]] |
| - | [[Category: Cramer, J T]] | + | [[Category: Cramer JT]] |
| - | [[Category: Fedorov, R]] | + | [[Category: Fedorov R]] |
| - | [[Category: Fiebig, T]] | + | [[Category: Fiebig T]] |
| - | [[Category: Muehlenhoff, M]] | + | [[Category: Muehlenhoff M]] |
| - | [[Category: A/b hydrolase fold]]
| + | |
| - | [[Category: Catalytic triad]]
| + | |
| - | [[Category: O-acetyltransferase]]
| + | |
| - | [[Category: Serine transferase]]
| + | |
| - | [[Category: Transferase]]
| + | |
| Structural highlights
Function
O68216_NEIMD
Publication Abstract from PubMed
O-Acetylation of the capsular polysaccharide (CPS) of Neisseria meningitidis serogroup A (NmA) is critical for the induction of functional immune responses, making this modification mandatory for CPS-based anti-NmA vaccines. Using comprehensive NMR studies, we demonstrate that O-acetylation stabilizes the labile anomeric phosphodiester-linkages of the NmA-CPS and occurs in position C3 and C4 of the N-acetylmannosamine units due to enzymatic transfer and non-enzymatic ester migration, respectively. To shed light on the enzymatic transfer mechanism, we solved the crystal structure of the capsule O-acetyltransferase CsaC in its apo and acceptor-bound form and of the CsaC-H228A mutant as trapped acetyl-enzyme adduct in complex with CoA. Together with the results of a comprehensive mutagenesis study, the reported structures explain the strict regioselectivity of CsaC and provide insight into the catalytic mechanism, which relies on an unexpected Gln-extension of a classical Ser-His-Asp triad, embedded in an alpha/beta-hydrolase fold.
Structural and mechanistic basis of capsule O-acetylation in Neisseria meningitidis serogroup A.,Fiebig T, Cramer JT, Bethe A, Baruch P, Curth U, Fuhring JI, Buettner FFR, Vogel U, Schubert M, Fedorov R, Muhlenhoff M Nat Commun. 2020 Sep 18;11(1):4723. doi: 10.1038/s41467-020-18464-y. PMID:32948778[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Fiebig T, Cramer JT, Bethe A, Baruch P, Curth U, Fuhring JI, Buettner FFR, Vogel U, Schubert M, Fedorov R, Muhlenhoff M. Structural and mechanistic basis of capsule O-acetylation in Neisseria meningitidis serogroup A. Nat Commun. 2020 Sep 18;11(1):4723. doi: 10.1038/s41467-020-18464-y. PMID:32948778 doi:http://dx.doi.org/10.1038/s41467-020-18464-y
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