1eil

2,3-DIHYDROXYBIPHENYL-1,2-DIOXYGENASE

spinqualitylabelsall models 1eil, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1eil is a 1 chain structure with sequence from Pses1. The January 2006 RCSB PDB Molecule of the Month feature on Topoisomerases by David S. Goodsell is 10.2210/rcsb_pdb/mom_2006_1. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: FE, SO4 Related: 1dhy, 1eim, 1eiq, 1eir Activity: Biphenyl-2,3-diol 1,2-dioxygenase, with EC number 1.13.11.39 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed BphC derived from Pseudomonas sp. strain KKS102, an extradiol type catecholic dioxygenase, is a non-heam iron-containing enzyme, playing an important role in the degradation of biphenyl/PCB (Poly Chlorinated Biphenyls) in the microbe. Although we had earlier solved the crystal structure of KKS102 BphC, it was the inactive form with Fe(III) in the active site. In order to determine the active form structure, BphC was re-activated by anaerobic incubation with Fe(II) and ascorbate, and crystallized anaerobically. The crystal structures of activated BphC and its substrate complex (E x S complex) were determined at 2.0 A resolution under cryogenic condition. In addition, crystal structures of unactivated BphC in substrate free and complex forms were also re-determined. Comparison of activated and unactivated E x S complexes reveals that the orientation of the bound substrate in the active site is significantly different between the two. The structural comparison of the substrate free and complex forms of activated BphC show certain small conformational shifts around the active site upon substrate binding. As a result of the conformational shifts, His194, which has been suggested as the catalytic base, takes part in a weak hydrogen bond with hydroxyl group of the substrate. Crystal structures of substrate free and complex forms of reactivated BphC, an extradiol type ring-cleavage dioxygenase.,Uragami Y, Senda T, Sugimoto K, Sato N, Nagarajan V, Masai E, Fukuda M, Mitsu Y J Inorg Biochem. 2001 Feb;83(4):269-79. PMID:11293547 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

Proteopedia Page Contributors and Editors (what is this?)

OCA