2np2
From Proteopedia
Hbb-DNA complex
Structural highlights
FunctionDBH_BORBU Histone-like DNA-binding protein which is capable of wrapping DNA to stabilize it, and thus to prevent its denaturation under extreme environmental conditions. 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 PubMedThe genome of the Lyme disease-causing spirochete Borrelia burgdorferi encodes only a single polypeptide from the integration host factor (IHF)/HU or 'DNABII' family of nucleoid-associated proteins - Hbb. DNABII proteins induce large bends in DNA and serve as architectural factors in a variety of prokaryotic cellular processes. We have solved the crystal structure of an Hbb-DNA complex in which the DNA is bent by over 180 degrees . We find that like IHF, Hbb relies exclusively on indirect readout to recognize its cognate site. Additional binding studies show that the sequence preferences of Hbb are related to, yet distinct from those of IHF. Defining these binding characteristics may help to uncover additional roles for Hbb in Borrelia DNA metabolism as well as further our understanding of the mechanism of indirect readout. Shaping the Borrelia burgdorferi genome: crystal structure and binding properties of the DNA-bending protein Hbb.,Mouw KW, Rice PA Mol Microbiol. 2007 Mar;63(5):1319-30. Epub 2007 Jan 22. PMID:17244195[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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