1g8o: Difference between revisions
From Proteopedia
Jump to navigationJump to search
New page: left|200px<br /><applet load="1g8o" size="450" color="white" frame="true" align="right" spinBox="true" caption="1g8o, resolution 2.30Å" /> '''CRYSTALLOGRAPHIC STR... |
No edit summary |
||
| (18 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
== | ==CRYSTALLOGRAPHIC STRUCTURE OF THE NATIVE BOVINE ALPHA-1,3-GALACTOSYLTRANSFERASE CATALYTIC DOMAIN== | ||
alpha1,3-galactosyltransferase (alpha3GalT, EC 2.4.1.151) is a | <StructureSection load='1g8o' size='340' side='right'caption='[[1g8o]], [[Resolution|resolution]] 2.30Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1g8o]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G8O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1G8O FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=U5P:URIDINE-5-MONOPHOSPHATE'>U5P</scene></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=1g8o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g8o OCA], [https://pdbe.org/1g8o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1g8o RCSB], [https://www.ebi.ac.uk/pdbsum/1g8o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1g8o ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/GGTA1_BOVIN GGTA1_BOVIN] Transfer of galactose from UDP-galactose to an acceptor molecule (R). | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/g8/1g8o_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1g8o ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
alpha1,3-galactosyltransferase (alpha3GalT, EC 2.4.1.151) is a Golgi-resident, type II transmembrane protein that transfers galactose from UDP-alpha-galactose to the terminal N:-acetyllactosamine unit of glycoconjugate glycans, producing the Galalpha1,3Galbeta1,4GlcNAc oligosaccharide structure present in most mammalian glycoproteins. Unlike most other mammals, humans and Old World primates do not possess alpha3GalT activity, which is relevant for the hyperacute rejection observed in pig-to-human xenotransplantation. The crystal structure of the catalytic domain of substrate-free bovine alpha3GalT, solved and refined to 2.3 A resolution, has a globular shape with an alpha/beta fold containing a narrow cleft on one face, and shares a UDP-binding domain (UBD) with the recently solved inverting glycosyltransferases. The substrate-bound complex, solved and refined to 2.5 A, allows the description of residues interacting directly with UDP-galactose. These structural data suggest that the strictly conserved residue E317 is likely to be the catalytic nucleophile involved in galactose transfer with retention of anomeric configuration as accomplished by this enzyme. Moreover, the alpha3GalT structure helps to identify amino acid residues that determine the specificities of the highly homologous ABO histo-blood group and glycosphingolipid glycosyltransferases. | |||
Bovine alpha1,3-galactosyltransferase catalytic domain structure and its relationship with ABO histo-blood group and glycosphingolipid glycosyltransferases.,Gastinel LN, Bignon C, Misra AK, Hindsgaul O, Shaper JH, Joziasse DH EMBO J. 2001 Feb 15;20(4):638-49. PMID:11179209<ref>PMID:11179209</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1g8o" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Glycosyltransferase 3D structures|Glycosyltransferase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Bos taurus]] | [[Category: Bos taurus]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Bigon C]] | |||
[[Category: Bigon | [[Category: Gastinel LN]] | ||
[[Category: Gastinel | [[Category: Hindsgaul O]] | ||
[[Category: Hindsgaul | [[Category: Joziasse DH]] | ||
[[Category: Joziasse | [[Category: Misra AK]] | ||
[[Category: Misra | [[Category: Shaper JH]] | ||
[[Category: Shaper | |||
Latest revision as of 08:04, 4 March 2026
CRYSTALLOGRAPHIC STRUCTURE OF THE NATIVE BOVINE ALPHA-1,3-GALACTOSYLTRANSFERASE CATALYTIC DOMAIN
| ||||||||||||
