1l5j
From Proteopedia
CRYSTAL STRUCTURE OF E. COLI ACONITASE B.
Overview
The major bifunctional aconitase of Escherichia coli (AcnB) serves as either an enzymic catalyst or a mRNA-binding post-transcriptional regulator, depending on the status of its iron sulfur cluster. AcnB represents a large, distinct group of Gram-negative bacterial aconitases that have an altered domain organization relative to mitochondrial aconitase and other aconitases. Here the 2.4 A structure of E. coli AcnB reveals a high degree of conservation at the active site despite its domain reorganization. It also reveals that the additional domain, characteristic of the AcnB subfamily, is a HEAT-like domain, implying a role in protein protein recognition. This domain packs against the remainder of the protein to form a tunnel leading to the aconitase active site, potentially for substrate channeling.
About this Structure
1L5J is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
Reference
E. coli aconitase B structure reveals a HEAT-like domain with implications for protein-protein recognition., Williams CH, Stillman TJ, Barynin VV, Sedelnikova SE, Tang Y, Green J, Guest JR, Artymiuk PJ, Nat Struct Biol. 2002 Jun;9(6):447-52. PMID:11992126 Page seeded by OCA on Fri May 2 23:33:52 2008
