1jki: Difference between revisions

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[[Image:1jki.gif|left|200px]]
[[Image:1jki.gif|left|200px]]


{{Structure
<!--
|PDB= 1jki |SIZE=350|CAPTION= <scene name='initialview01'>1jki</scene>, resolution 2.2&Aring;
The line below this paragraph, containing "STRUCTURE_1jki", creates the "Structure Box" on the page.
|SITE=
You may change the PDB parameter (which sets the PDB file loaded into the applet)
|LIGAND= <scene name='pdbligand=DG6:2-DEOXY-GLUCITOL-6-PHOSPHATE'>DG6</scene>, <scene name='pdbligand=NAI:1,4-DIHYDRONICOTINAMIDE+ADENINE+DINUCLEOTIDE'>NAI</scene>, <scene name='pdbligand=NH4:AMMONIUM+ION'>NH4</scene>
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Inositol-3-phosphate_synthase Inositol-3-phosphate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.5.1.4 5.5.1.4] </span>
or leave the SCENE parameter empty for the default display.
|GENE=  
-->
|DOMAIN=
{{STRUCTURE_1jki| PDB=1jki  | SCENE= }}  
|RELATEDENTRY=[[1jkf|1JKF]]
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1jki FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jki OCA], [http://www.ebi.ac.uk/pdbsum/1jki PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1jki RCSB]</span>
}}


'''myo-Inositol-1-phosphate Synthase Complexed with an Inhibitor, 2-deoxy-glucitol-6-phosphate'''
'''myo-Inositol-1-phosphate Synthase Complexed with an Inhibitor, 2-deoxy-glucitol-6-phosphate'''
Line 28: Line 25:
[[Category: Geiger, J H.]]
[[Category: Geiger, J H.]]
[[Category: Stein, A J.]]
[[Category: Stein, A J.]]
[[Category: inhibitor-bound structure]]
[[Category: Inhibitor-bound structure]]
[[Category: rossmann fold]]
[[Category: Rossmann fold]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 21:19:59 2008''
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:34:58 2008''

Revision as of 18:20, 2 May 2008

File:1jki.gif

Template:STRUCTURE 1jki

myo-Inositol-1-phosphate Synthase Complexed with an Inhibitor, 2-deoxy-glucitol-6-phosphate


Overview

1-l-myo-Inositol-1-phosphate synthase catalyzes the conversion of d-glucose 6-phosphate to 1-l-myo-inositol-1-phosphate (MIP), the first and rate-limiting step in the biosynthesis of all inositol-containing compounds. It involves an oxidation, intramolecular aldol cyclization, and reduction. We have determined the first crystal structure of MIP synthase. We present structures of both the NAD-bound enzyme and the enzyme bound to an inhibitor, 2-deoxy-glucitol-6-phosphate. While 58 amino acids are disordered in the unbound form of the enzyme in the vicinity of the active site, the inhibitor nucleates the folding of this domain in a striking example of induced fit, serving to completely encapsulate it within the enzyme. Three helices and a long beta-strand are formed in this process. We postulate a mechanism for the conversion based on the structure of the inhibitor-bound complex.

About this Structure

1JKI is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

The crystal structure and mechanism of 1-L-myo-inositol- 1-phosphate synthase., Stein AJ, Geiger JH, J Biol Chem. 2002 Mar 15;277(11):9484-91. Epub 2002 Jan 4. PMID:11779862 Page seeded by OCA on Fri May 2 21:19:59 2008

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