1koj
From Proteopedia
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|PDB= 1koj |SIZE=350|CAPTION= <scene name='initialview01'>1koj</scene>, resolution 1.90Å | |PDB= 1koj |SIZE=350|CAPTION= <scene name='initialview01'>1koj</scene>, resolution 1.90Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=PAN:5-PHOSPHO-D-ARABINOHYDROXAMIC ACID'>PAN</scene> | + | |LIGAND= <scene name='pdbligand=PAN:5-PHOSPHO-D-ARABINOHYDROXAMIC+ACID'>PAN</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Glucose-6-phosphate_isomerase Glucose-6-phosphate isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.3.1.9 5.3.1.9] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucose-6-phosphate_isomerase Glucose-6-phosphate isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.3.1.9 5.3.1.9] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1dqr|1DQR]], [[1hox|1HOX]], [[1hm5|1HM5]], [[1iat|1IAT]], [[1g98|1G98]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1koj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1koj OCA], [http://www.ebi.ac.uk/pdbsum/1koj PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1koj RCSB]</span> | ||
}} | }} | ||
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[[Category: Jeffery, C J.]] | [[Category: Jeffery, C J.]] | ||
[[Category: Salmon, L.]] | [[Category: Salmon, L.]] | ||
| - | [[Category: PAN]] | ||
[[Category: protein - inhibitor complex]] | [[Category: protein - inhibitor complex]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:51:25 2008'' |
Revision as of 18:51, 30 March 2008
| |||||||
| , resolution 1.90Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Activity: | Glucose-6-phosphate isomerase, with EC number 5.3.1.9 | ||||||
| Related: | 1DQR, 1HOX, 1HM5, 1IAT, 1G98
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of rabbit phosphoglucose isomerase complexed with 5-phospho-D-arabinonohydroxamic acid
Overview
Phosphoglucose isomerase (EC ) catalyzes the second step in glycolysis, the reversible isomerization of D-glucose 6-phosphate to D-fructose 6-phosphate. The reaction mechanism involves acid-base catalysis with proton transfer and proceeds through a cis-enediol(ate) intermediate. 5-Phospho-D-arabinonohydroxamic acid (5PAH) is a synthetic small molecule that resembles the reaction intermediate, differing only in that it has a nitrogen atom in place of C1. Hence, 5PAH is the best inhibitor of the isomerization reaction reported to date with a K(i) of 2 x 10(-7) M. Here we report the crystal structure of rabbit phosphoglucose isomerase complexed with 5PAH at 1.9 A resolution. The interaction of 5PAH with amino acid residues in the enzyme active site supports a model of the catalytic mechanism in which Glu-357 transfers a proton between C1 and C2 and Arg-272 helps stabilize the intermediate. It also suggests a mechanism for proton transfer between O1 and O2.
About this Structure
1KOJ is a Single protein structure of sequence from Oryctolagus cuniculus. Full crystallographic information is available from OCA.
Reference
The crystal structure of rabbit phosphoglucose isomerase complexed with 5-phospho-D-arabinonohydroxamic acid., Arsenieva D, Hardre R, Salmon L, Jeffery CJ, Proc Natl Acad Sci U S A. 2002 Apr 30;99(9):5872-7. PMID:11983887
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