14gs
From Proteopedia
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[[Image:14gs.gif|left|200px]] | [[Image:14gs.gif|left|200px]] | ||
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'''GLUTATHIONE S-TRANSFERASE P1-1 APO FORM 1''' | '''GLUTATHIONE S-TRANSFERASE P1-1 APO FORM 1''' | ||
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[[Category: Parker, M W.]] | [[Category: Parker, M W.]] | ||
[[Category: Ricci, G.]] | [[Category: Ricci, G.]] | ||
- | [[Category: | + | [[Category: Apoenzyme]] |
- | [[Category: | + | [[Category: Detoxification]] |
- | [[Category: | + | [[Category: Transferase]] |
- | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 09:30:41 2008'' | |
- | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + |
Revision as of 06:30, 2 May 2008
GLUTATHIONE S-TRANSFERASE P1-1 APO FORM 1
Overview
Three-dimensional structures of the apo form of human pi class glutathione transferase have been determined by X-ray crystallography. The structures suggest the enzyme recognizes its substrate, glutathione, by an induced-fit mechanism. Compared to complexed forms of the enzyme, the environment around the catalytic residue, Tyr 7, remains unchanged in the apoenzyme. This observation supports the view that Tyr 7 does not act as a general base in the reaction mechanism. The observed cooperativity of the dimeric enzyme may be due to the movements of a helix that forms one wall of the active site and, in particular, to movements of a tyrosine residue that is located in the subunit interface.
About this Structure
14GS is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Evidence for an induced-fit mechanism operating in pi class glutathione transferases., Oakley AJ, Lo Bello M, Ricci G, Federici G, Parker MW, Biochemistry. 1998 Jul 14;37(28):9912-7. PMID:9665696 Page seeded by OCA on Fri May 2 09:30:41 2008