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.
1jeo
From Proteopedia
|
Crystal Structure of the Hypothetical Protein MJ1247 from Methanococcus jannaschii at 2.0 A Resolution Infers a Molecular Function of 3-Hexulose-6-Phosphate isomerase.
Overview
The crystal structure of the hypothetical protein MJ1247 from Methanococccus jannaschii at 2 A resolution, a detailed sequence analysis, and biochemical assays infer its molecular function to be 3-hexulose-6-phosphate isomerase (PHI). In the dissimilatory ribulose monophosphate (RuMP) cycle, ribulose-5-phosphate is coupled to formaldehyde by the 3-hexulose-6-phosphate synthase (HPS), yielding hexulose-6-phosphate, which is then isomerized to fructose-6-phosphate by the enzyme 3-hexulose-6-phosphate isomerase. MJ1247 is an alpha/beta structure consisting of a five-stranded parallel beta sheet flanked on both sides by alpha helices, forming a three-layered alpha-beta-alpha sandwich. The fold represents the nucleotide binding motif of a flavodoxin type. MJ1247 is a tetramer in the crystal and in solution and each monomer has a folding similar to the isomerase domain of glucosamine-6-phosphate synthase (GlmS).
About this Structure
1JEO is a Single protein structure of sequence from Methanocaldococcus jannaschii with as ligand. Full crystallographic information is available from OCA.
Reference
Crystal structure of MJ1247 protein from M. jannaschii at 2.0 A resolution infers a molecular function of 3-hexulose-6-phosphate isomerase., Martinez-Cruz LA, Dreyer MK, Boisvert DC, Yokota H, Martinez-Chantar ML, Kim R, Kim SH, Structure. 2002 Feb;10(2):195-204. PMID:11839305
Page seeded by OCA on Thu Feb 21 13:21:48 2008
Categories: Methanocaldococcus jannaschii | Single protein | BSGC, Berkeley Structural Genomics Center. | Boisvert, D C. | Dreyer, M K. | Kim, R. | Kim, S H. | Martinez-Chantar, M L. | Martinez-Cruz, L A. | Yokota, H. | CIT | 3-hexulose-6-phosphate isomerase | Berkeley structural genomics center | Bsgc structure funded by nih | Phi | Phosphosugar | Protein structure initiative | Psi | Rump pathway | Structural genomics
