2gsq
From Proteopedia
| Line 1: | Line 1: | ||
[[Image:2gsq.jpg|left|200px]] | [[Image:2gsq.jpg|left|200px]] | ||
| - | + | <!-- | |
| - | + | The line below this paragraph, containing "STRUCTURE_2gsq", 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_2gsq| PDB=2gsq | SCENE= }} |
| - | + | ||
| - | + | ||
| - | }} | + | |
'''GLUTATHIONE S-TRANSFERASE FROM SQUID DIGESTIVE GLAND COMPLEXED WITH S-(3-IODOBENZYL)GLUTATHIONE''' | '''GLUTATHIONE S-TRANSFERASE FROM SQUID DIGESTIVE GLAND COMPLEXED WITH S-(3-IODOBENZYL)GLUTATHIONE''' | ||
| Line 29: | Line 26: | ||
[[Category: Gilliland, G L.]] | [[Category: Gilliland, G L.]] | ||
[[Category: Ji, X.]] | [[Category: Ji, X.]] | ||
| - | [[Category: | + | [[Category: Sigma class]] |
| - | [[Category: | + | [[Category: Squid digestive gland]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 05:29:08 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 02:29, 4 May 2008
GLUTATHIONE S-TRANSFERASE FROM SQUID DIGESTIVE GLAND COMPLEXED WITH S-(3-IODOBENZYL)GLUTATHIONE
Overview
The crystal structure of the sigma class glutathione transferase from squid digestive gland in complex with S-(3-iodobenzyl)glutathione reveals a third binding site for the glutathione conjugate besides the two in the active sites of the dimer. The additional binding site is near the crystallographic two-fold axis between the two alpha 4-turn-alpha 5 motifs. The principal binding interactions with the conjugate include specific electrostatic interactions between the peptide and the two subunits and a hydrophobic cavity found across the two-fold axis that accommodates the 3-iodobenzyl group. Thus, two identical, symmetry-related but mutually exclusive binding modes for the third conjugate are observed. The hydrophobic pocket is about 14 A from the hydroxyl group of Tyr-7 in the active site. This site is a potential transport binding site for hydrophobic molecules or their glutathione conjugates.
About this Structure
2GSQ is a Single protein structure of sequence from Ommastrephes sloani. Full crystallographic information is available from OCA.
Reference
Location of a potential transport binding site in a sigma class glutathione transferase by x-ray crystallography., Ji X, von Rosenvinge EC, Johnson WW, Armstrong RN, Gilliland GL, Proc Natl Acad Sci U S A. 1996 Aug 6;93(16):8208-13. PMID:8710848 Page seeded by OCA on Sun May 4 05:29:08 2008
