1cqz
From Proteopedia
Line 1: | Line 1: | ||
[[Image:1cqz.jpg|left|200px]] | [[Image:1cqz.jpg|left|200px]] | ||
- | + | <!-- | |
- | + | The line below this paragraph, containing "STRUCTURE_1cqz", creates the "Structure Box" on the page. | |
- | + | You may change the PDB parameter (which sets the PDB file loaded into the applet) | |
- | + | or the SCENE parameter (which sets the initial scene displayed when the page is loaded), | |
- | + | or leave the SCENE parameter empty for the default display. | |
- | | | + | --> |
- | | | + | {{STRUCTURE_1cqz| PDB=1cqz | SCENE= }} |
- | + | ||
- | + | ||
- | }} | + | |
'''CRYSTAL STRUCTURE OF MURINE SOLUBLE EPOXIDE HYDROLASE.''' | '''CRYSTAL STRUCTURE OF MURINE SOLUBLE EPOXIDE HYDROLASE.''' | ||
Line 30: | Line 27: | ||
[[Category: Hammock, B D.]] | [[Category: Hammock, B D.]] | ||
[[Category: Morisseau, C.]] | [[Category: Morisseau, C.]] | ||
- | [[Category: | + | [[Category: Alpha/beta hydrolase fold]] |
- | [[Category: | + | [[Category: Domain-swapping]] |
- | [[Category: | + | [[Category: Homodimer]] |
- | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 13:01:28 2008'' | |
- | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + |
Revision as of 10:01, 2 May 2008
CRYSTAL STRUCTURE OF MURINE SOLUBLE EPOXIDE HYDROLASE.
Overview
The crystal structure of recombinant murine liver cytosolic epoxide hydrolase (EC 3.3.2.3) has been determined at 2.8-A resolution. The binding of a nanomolar affinity inhibitor confirms the active site location in the C-terminal domain; this domain is similar to that of haloalkane dehalogenase and shares the alpha/beta hydrolase fold. A structure-based mechanism is proposed that illuminates the unique chemical strategy for the activation of endogenous and man-made epoxide substrates for hydrolysis and detoxification. Surprisingly, a vestigial active site is found in the N-terminal domain similar to that of another enzyme of halocarbon metabolism, haloacid dehalogenase. Although the vestigial active site does not participate in epoxide hydrolysis, the vestigial domain plays a critical structural role by stabilizing the dimer in a distinctive domain-swapped architecture. Given the genetic and structural relationships among these enzymes of xenobiotic metabolism, a structure-based evolutionary sequence is postulated.
About this Structure
1CQZ is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.
Reference
Detoxification of environmental mutagens and carcinogens: structure, mechanism, and evolution of liver epoxide hydrolase., Argiriadi MA, Morisseau C, Hammock BD, Christianson DW, Proc Natl Acad Sci U S A. 1999 Sep 14;96(19):10637-42. PMID:10485878 Page seeded by OCA on Fri May 2 13:01:28 2008