1g98
From Proteopedia
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|PDB= 1g98 |SIZE=350|CAPTION= <scene name='initialview01'>1g98</scene>, resolution 1.9Å | |PDB= 1g98 |SIZE=350|CAPTION= <scene name='initialview01'>1g98</scene>, resolution 1.9Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=PA5:5-PHOSPHOARABINONIC ACID'>PA5</scene> | + | |LIGAND= <scene name='pdbligand=PA5:5-PHOSPHOARABINONIC+ACID'>PA5</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]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1g98 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g98 OCA], [http://www.ebi.ac.uk/pdbsum/1g98 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1g98 RCSB]</span> | ||
}} | }} | ||
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[[Category: Jeffery, C J.]] | [[Category: Jeffery, C J.]] | ||
[[Category: Salmon, L.]] | [[Category: Salmon, L.]] | ||
| - | [[Category: PA5]] | ||
[[Category: 5-phosphoarabinonate]] | [[Category: 5-phosphoarabinonate]] | ||
[[Category: phosphoglucose isomerase]] | [[Category: phosphoglucose isomerase]] | ||
[[Category: transition state analogue]] | [[Category: transition state analogue]] | ||
| - | ''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 20:39:23 2008'' |
Revision as of 17:39, 30 March 2008
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| , resolution 1.9Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Activity: | Glucose-6-phosphate isomerase, with EC number 5.3.1.9 | ||||||
| Related: | 1DQR
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE ANALYSIS OF RABBIT PHOSPHOGLUCOSE ISOMERASE COMPLEXED WITH 5-PHOSPHOARABINONATE, A TRANSITION STATE ANALOGUE
Overview
Phosphoglucose isomerase (PGI; E.C. 5.3.1.9) catalyzes the second step in glycolysis, the interconversion of D-glucose-6-phosphate and D-fructose-6-phosphate. We determined the X-ray crystal structure of rabbit PGI complexed with a competitive inhibitor of isomerase activity, 5-phospho-D-arabinonate (5PAA), at 1.9 A resolution. 5PAA is a better mimic of the proposed cis-enediol(ate) intermediate than 6-phospho-D-gluconate, which was used in a previously reported crystal structure of rabbit PGI. The orientation of 5PAA bound in the enzyme active site predicts that active site residue Glu357 is the residue that transfers a proton between C2 and C1 of the proposed cis-enediol(ate) intermediate. Amino acid residues Arg272 and Lys210 are predicted to be involved in stabilizing the negative charge of the intermediate.
About this Structure
1G98 is a Single protein structure of sequence from Oryctolagus cuniculus. Full crystallographic information is available from OCA.
Reference
Crystal structure of rabbit phosphoglucose isomerase complexed with 5-phospho-D-arabinonate identifies the role of Glu357 in catalysis., Jeffery CJ, Hardre R, Salmon L, Biochemistry. 2001 Feb 13;40(6):1560-6. PMID:11327814
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