This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
1nuh
From Proteopedia
The crystal structure of human phosphoglucose isomerase complexed with 5-phosphoarabinonate
Contents |
Overview
Phosphoglucose isomerase (PGI) is a workhorse enzyme of carbohydrate metabolism that interconverts glucose 6-phosphate and fructose 6-phosphate. Outside the cell, however, the protein appears to function as a cytokine. A crystal structure of human PGI bound with 5-phosphoarabinonate, a strong inhibitor that mimics the cis-enediol(ate) intermediate of the reaction, has been determined at 2.5 A resolution. The structure helps to confirm the assignment of Glu357 as the base catalyst in the isomerase reaction.
Disease
Known disease associated with this structure: Hemolytic anemia due to glucosephosphate isomerase deficiency OMIM:[172400], Hydrops fetalis, one form OMIM:[172400]
About this Structure
1NUH is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
The structure of human phosphoglucose isomerase complexed with a transition-state analogue., Davies C, Muirhead H, Chirgwin J, Acta Crystallogr D Biol Crystallogr. 2003 Jun;59(Pt 6):1111-3. Epub 2003, May 23. PMID:12777791 Page seeded by OCA on Sat May 3 02:59:40 2008
