1omx: Difference between revisions
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'''Crystal structure of mouse alpha-1,4-N-acetylhexosaminyltransferase (EXTL2)''' | {{Structure | ||
|PDB= 1omx |SIZE=350|CAPTION= <scene name='initialview01'>1omx</scene>, resolution 2.40Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene> | |||
|ACTIVITY= | |||
|GENE= EXTL2 OR EXTR2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 Mus musculus]) | |||
}} | |||
'''Crystal structure of mouse alpha-1,4-N-acetylhexosaminyltransferase (EXTL2)''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1OMX is a [ | 1OMX is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OMX OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structure of an alpha 1,4-N-acetylhexosaminyltransferase (EXTL2), a member of the exostosin gene family involved in heparan sulfate biosynthesis., Pedersen LC, Dong J, Taniguchi F, Kitagawa H, Krahn JM, Pedersen LG, Sugahara K, Negishi M, J Biol Chem. 2003 Apr 18;278(16):14420-8. Epub 2003 Jan 31. PMID:[http:// | Crystal structure of an alpha 1,4-N-acetylhexosaminyltransferase (EXTL2), a member of the exostosin gene family involved in heparan sulfate biosynthesis., Pedersen LC, Dong J, Taniguchi F, Kitagawa H, Krahn JM, Pedersen LG, Sugahara K, Negishi M, J Biol Chem. 2003 Apr 18;278(16):14420-8. Epub 2003 Jan 31. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12562774 12562774] | ||
[[Category: Mus musculus]] | [[Category: Mus musculus]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: rossmann fold]] | [[Category: rossmann fold]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 13:12:56 2008'' | ||
Revision as of 14:12, 20 March 2008
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| , resolution 2.40Å | |||||||
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| Ligands: | |||||||
| Gene: | EXTL2 OR EXTR2 (Mus musculus) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of mouse alpha-1,4-N-acetylhexosaminyltransferase (EXTL2)
OverviewOverview
EXTL2, an alpha1,4-N-acetylhexosaminyltransferase, catalyzes the transfer reaction of N-acetylglucosamine and N-acetylgalactosamine from the respective UDP-sugars to the non-reducing end of [glucuronic acid]beta1-3[galactose]beta1-O-naphthalenemethanol, an acceptor substrate analog of the natural common linker of various glycosylaminoglycans. We have solved the x-ray crystal structure of the catalytic domain of mouse EXTL2 in the apo-form and with donor substrates UDP-N-acetylglucosamine and UDP-N-acetylgalactosamine. In addition, a structure of the ternary complex with UDP and the acceptor substrate analog [glucuronic acid]beta1-3[galactose]beta1-O-naphthalenemethanol has been determined. These structures reveal three highly conserved residues, Asn-243, Asp-246, and Arg-293, located at the active site. Mutation of these residues greatly decreases the activity. In the ternary complex, an interaction exists between the beta-phosphate of the UDP leaving group and the acceptor hydroxyl of the substrate that may play a functional role in catalysis. These structures represent the first structures from the exostosin gene family and provide important insight into the mechanisms of alpha1,4-N-acetylhexosaminyl transfer in heparan biosynthesis.
About this StructureAbout this Structure
1OMX is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structure of an alpha 1,4-N-acetylhexosaminyltransferase (EXTL2), a member of the exostosin gene family involved in heparan sulfate biosynthesis., Pedersen LC, Dong J, Taniguchi F, Kitagawa H, Krahn JM, Pedersen LG, Sugahara K, Negishi M, J Biol Chem. 2003 Apr 18;278(16):14420-8. Epub 2003 Jan 31. PMID:12562774
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