1guh

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{{STRUCTURE_1guh| PDB=1guh | SCENE= }}
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'''STRUCTURE DETERMINATION AND REFINEMENT OF HUMAN ALPHA CLASS GLUTATHIONE TRANSFERASE A1-1, AND A COMPARISON WITH THE MU AND PI CLASS ENZYMES'''
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===STRUCTURE DETERMINATION AND REFINEMENT OF HUMAN ALPHA CLASS GLUTATHIONE TRANSFERASE A1-1, AND A COMPARISON WITH THE MU AND PI CLASS ENZYMES===
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==Overview==
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The crystal structure of human alpha class glutathione transferase A1-1 has been determined and refined to a resolution of 2.6 A. There are two copies of the dimeric enzyme in the asymmetric unit. Each monomer is built from two domains. A bound inhibitor, S-benzyl-glutathione, is primarily associated with one of these domains via a network of hydrogen bonds and salt-links. In particular, the sulphur atom of the inhibitor forms a hydrogen bond to the hydroxyl group of Tyr9 and the guanido group of Arg15. The benzyl group of the inhibitor is completely buried in a hydrophobic pocket. The structure shows an overall similarity to the mu and pi class enzymes particularly in the glutathione-binding domain". The main difference concerns the extended C terminus of the alpha class enzyme which forms an extra alpha-helix that blocks one entrance to the active site and makes up part of the substrate binding site.
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{{ABSTRACT_PUBMED_8331657}}
==About this Structure==
==About this Structure==
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[[Category: Kleywegt, G J.]]
[[Category: Kleywegt, G J.]]
[[Category: Sinning, I.]]
[[Category: Sinning, I.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 06:06:06 2008''

Revision as of 03:06, 1 July 2008

Image:1guh.png

Template:STRUCTURE 1guh

STRUCTURE DETERMINATION AND REFINEMENT OF HUMAN ALPHA CLASS GLUTATHIONE TRANSFERASE A1-1, AND A COMPARISON WITH THE MU AND PI CLASS ENZYMES

Template:ABSTRACT PUBMED 8331657

About this Structure

1GUH is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure determination and refinement of human alpha class glutathione transferase A1-1, and a comparison with the Mu and Pi class enzymes., Sinning I, Kleywegt GJ, Cowan SW, Reinemer P, Dirr HW, Huber R, Gilliland GL, Armstrong RN, Ji X, Board PG, et al., J Mol Biol. 1993 Jul 5;232(1):192-212. PMID:8331657

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