1n03 | pdb_00001n03

Model for Active RecA Filament

spinqualitylabelsall models 1n03, resolution 20.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1n03 is a 7 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ADP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [RECA_ECOLI] Can catalyze the hydrolysis of ATP in the presence of single-stranded DNA, the ATP-dependent uptake of single-stranded DNA by duplex DNA, and the ATP-dependent hybridization of homologous single-stranded DNAs. It interacts with LexA causing its activation and leading to its autocatalytic cleavage.[HAMAP-Rule:MF_00268] 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 The crystal structure of the E. coli RecA protein was solved more than 10 years ago, but it has provided limited insight into the mechanism of homologous genetic recombination. Using electron microscopy, we have reconstructed five different states of RecA-DNA filaments. The C-terminal lobe of the RecA protein is modulated by the state of the distantly bound nucleotide, and this allosteric coupling can explain how mutations and truncations of this C-terminal lobe enhance RecA's activity. A model generated from these reconstructions shows that the nucleotide binding core is substantially rotated from its position in the RecA crystal filament, resulting in ATP binding between subunits. This simple rotation can explain the large cooperativity in ATP hydrolysis observed for RecA-DNA filaments. ATP-mediated conformational changes in the RecA filament.,VanLoock MS, Yu X, Yang S, Lai AL, Low C, Campbell MJ, Egelman EH Structure. 2003 Feb;11(2):187-96. PMID:12575938 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Recombinase A

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