2or1 | pdb_00002or1

RECOGNITION OF A DNA OPERATOR BY THE REPRESSOR OF PHAGE 434. A VIEW AT HIGH RESOLUTION

spinqualitylabelsall models 2or1, resolution 2.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2or1 is a 4 chain structure with sequence from Bp434. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [RPC1_BP434] Binds to two sets of three contiguous operator sites in the phage genome. 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 repressors of temperate bacteriophages such as 434 and lambda control transcription by binding to a set of DNA operator sites. The different affinity of repressor for each of these sites ensures efficient regulation. High-resolution x-ray crystallography was used to study the DNA-binding domain of phage 434 repressor in complex with a synthetic DNA operator. The structure shows recognition of the operator by direct interactions with base pairs in the major groove, combined with the sequence-dependent ability of DNA to adopt the required conformation on binding repressor. In particular, a network of three-centered bifurcated hydrogen bonds among base pairs in the operator helps explain why 434 repressor prefers certain sites over others. These bonds, which stabilize the conformation of the bound DNA, can form only with certain sequences. Recognition of a DNA operator by the repressor of phage 434: a view at high resolution.,Aggarwal AK, Rodgers DW, Drottar M, Ptashne M, Harrison SC Science. 1988 Nov 11;242(4880):899-907. PMID:3187531 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Bacteriophage repressor

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