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| | <StructureSection load='2apc' size='340' side='right'caption='[[2apc]], [[Resolution|resolution]] 1.50Å' scene=''> | | <StructureSection load='2apc' size='340' side='right'caption='[[2apc]], [[Resolution|resolution]] 1.50Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2apc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/European_rabbit European rabbit]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2APC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2APC FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2apc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2APC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2APC FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=UDM:URIDINE-DIPHOSPHATE-METHYLENE-N-ACETYL-GLUCOSAMINE'>UDM</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]] 1.5Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1foa|1foa]], [[1fo9|1fo9]], [[1fo8|1fo8]]</div></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=UDM:URIDINE-DIPHOSPHATE-METHYLENE-N-ACETYL-GLUCOSAMINE'>UDM</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Alpha-1,3-mannosyl-glycoprotein_2-beta-N-acetylglucosaminyltransferase Alpha-1,3-mannosyl-glycoprotein 2-beta-N-acetylglucosaminyltransferase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.1.101 2.4.1.101] </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=2apc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2apc OCA], [https://pdbe.org/2apc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2apc RCSB], [https://www.ebi.ac.uk/pdbsum/2apc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2apc 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=2apc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2apc OCA], [https://pdbe.org/2apc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2apc RCSB], [https://www.ebi.ac.uk/pdbsum/2apc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2apc ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/MGAT1_RABIT MGAT1_RABIT]] Initiates complex N-linked carbohydrate formation. Essential for the conversion of high-mannose to hybrid and complex N-glycans.
| + | [https://www.uniprot.org/uniprot/MGAT1_RABIT MGAT1_RABIT] Initiates complex N-linked carbohydrate formation. Essential for the conversion of high-mannose to hybrid and complex N-glycans. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Alpha-1,3-mannosyl-glycoprotein 2-beta-N-acetylglucosaminyltransferase]] | |
| - | [[Category: European rabbit]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Gordon, R D]] | + | [[Category: Oryctolagus cuniculus]] |
| - | [[Category: Rini, J M]] | + | [[Category: Gordon RD]] |
| - | [[Category: Glycosyltransferase]] | + | [[Category: Rini JM]] |
| - | [[Category: N-acetylglucosaminyltransferase]]
| + | |
| - | [[Category: Transferase]]
| + | |
| - | [[Category: Udp-glcnac]]
| + | |
| - | [[Category: Udp-glcnac phosphonate]]
| + | |
| Structural highlights
Function
MGAT1_RABIT Initiates complex N-linked carbohydrate formation. Essential for the conversion of high-mannose to hybrid and complex N-glycans.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The Golgi-resident glycosyltransferase, UDP-N-acetyl-d-glucosamine:alpha-3-d-mannoside beta-1,2-N-acetylglucosaminyltransferase I (GnT I), initiates the conversion of high-mannose oligosaccharides to complex and hybrid structures in the biosynthesis of N-linked glycans. Reported here are the X-ray crystal structures of GnT I in complex with UDP-CH2-GlcNAc (a non-hydrolyzable C-glycosidic phosphonate), UDP-2-deoxy-2-fluoro-glucose, UDP-glucose and UDP. Collectively, these structures provide evidence for the importance of the GlcNAc moiety and its N-acetyl group in donor substrate binding, as well as insight into the role played by the flexible 318-330 loop in substrate binding and product release. In addition, the UDP-CH2-GlcNAc complex reveals a well-defined glycerol molecule poised for nucleophilic attack on the C1 atom of the donor substrate analogue. The position and orientation of this glycerol molecule have allowed us to model the binding of the Manalpha1,3Manbeta1 moiety of the acceptor substrate and, based on the model, to suggest a rationalization for the main determinants of GnT I acceptor specificity.
X-ray crystal structures of rabbit N-acetylglucosaminyltransferase I (GnT I) in complex with donor substrate analogues.,Gordon RD, Sivarajah P, Satkunarajah M, Ma D, Tarling CA, Vizitiu D, Withers SG, Rini JM J Mol Biol. 2006 Jun 30;360(1):67-79. Epub 2006 May 12. PMID:16769084[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Gordon RD, Sivarajah P, Satkunarajah M, Ma D, Tarling CA, Vizitiu D, Withers SG, Rini JM. X-ray crystal structures of rabbit N-acetylglucosaminyltransferase I (GnT I) in complex with donor substrate analogues. J Mol Biol. 2006 Jun 30;360(1):67-79. Epub 2006 May 12. PMID:16769084 doi:http://dx.doi.org/10.1016/j.jmb.2006.04.058
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