2k9s | pdb_00002k9s

Solution structure of dna binding domain of E. coli arac

spinqualitylabelsall models 2k9s Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2k9s is a 1 chain structure with sequence from Escherichia coli K-12. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ARAC_ECOLI This protein controls the expression of at least six genes that are involved in the transport and catabolism of L-arabinose. It regulates initiation of transcription of the araBAD operon and it also controls its own synthesis. The L-arabinose operon displays both positive and negative regulation through AraC. Publication Abstract from PubMed We report the solution structure of the DNA binding domain of the Escherichia coli regulatory protein AraC determined in the absence of DNA. The 20 lowest energy structures, determined on the basis of 1507 unambiguous nuclear Overhauser restraints and 180 angle restraints, are well resolved with a pair wise backbone root mean square deviation of 0.7 A. The protein, free of DNA, is well folded in solution and contains seven helices arranged in two semi-independent sub domains, each containing one helix-turn-helix DNA binding motif, joined by a 19 residue central helix. This solution structure is discussed in the context of extensive biochemical and physiological data on AraC and with respect to the DNA-bound structures of the MarA and Rob homologs. Proteins 2009. (c) 2009 Wiley-Liss, Inc. Solution structure of the DNA binding domain of AraC protein.,Rodgers ME, Schleif R Proteins. 2009 Mar 24. PMID:19422057 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Transcriptional activator 3D structures

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