2zvi

Crystal structure of 2,3-diketo-5-methylthiopentyl-1-phosphate enolase from Bacillus subtilis

spinqualitylabelsall models 2zvi, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2zvi is a 4 chain structure with sequence from Bacillus subtilis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.3Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function MTNW_BACSU Catalyzes the enolization of 2,3-diketo-5-methylthiopentyl-1-phosphate (DK-MTP-1-P) into 2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate (HK-MTPenyl-1-P). Publication Abstract from PubMed 2,3-Diketo-5-methylthiopentyl-1-phosphate enolase (DK-MTP-1P enolase), a RuBisCO-like protein (RLP), catalyzes the enolization of 2,3-diketo-5-methylthiopentyl-1-phosphate. The crystal structure of the apo decarbamylated form (E form) of Bacillus subtilis DK-MTP-1P enolase (Bs-DK-MTP-1P enolase) has been determined at 2.3 A resolution. The overall structure of the E form of Bs-DK-MTP-1P enolase highly resembles that of Geobacillus kaustophilus DK-MTP-1P enolase (Gk-DK-MTP-1P enolase), with the exception of a few insertions or deletions and of a few residues at the active site. In the E form of Bs-DK-MTP-1P enolase, Lys150 (equivalent to Lys175 in RuBisCO) at the active site adopts a conformation that is distinct from those observed in the other forms of Gk-DK-MTP-1P enolase. This unusual conformational change appears to be induced by changes in the varphi and psi angles of Gly151, which is conserved in the sequences of the Bs-DK-MTP-1P and Gk-DK-MTP-1P enolases but not in those of RuBisCOs. The loop at 303-312, equivalent to the catalytic loop termed ;loop-6' in RuBisCO, is in a closed conformation in the E form of Bs-DK-MTP-1P enolase. The closed conformation appears to be stabilized by Pro312, which is conserved in the sequences of several RLPs (equivalent to Glu338 in RuBisCO). Based on these results, the characteristic structural features of DK-MTP-1P enolase are discussed. Structure of the apo decarbamylated form of 2,3-diketo-5-methylthiopentyl-1-phosphate enolase from Bacillus subtilis.,Tamura H, Saito Y, Ashida H, Kai Y, Inoue T, Yokota A, Matsumura H Acta Crystallogr D Biol Crystallogr. 2009 Sep;65(Pt 9):942-51. Epub 2009, Aug 14. PMID:19690372 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Enolase 3D structures

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