4pt4

Crystal structure Analysis of N terminal region containing the dimerization domain and DNA binding domain of HU protein(Histone like protein-DNA binding) from Mycobacterium tuberculosis [H37Rv]

spinqualitylabelsall models 4pt4, resolution 2.04Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4pt4 is a 2 chain structure with sequence from Mycobacterium tuberculosis. This structure supersedes the now removed PDB entry 3c4i. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.04Å Ligands: FMT Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function DBH_MYCTU Histone-like DNA-binding protein which is capable of wrapping DNA to stabilize it, and thus to prevent its denaturation under extreme environmental conditions. Binds DNA non-specifically. Induces lymphoproliferation, particularly in health tuberculin reactors, and is immunogenic. Maybe involved in pathogenesis of inflammatory bowel disease (IBD) in patients with ulcerative colitis and Crohn disease (CD). Bound by anti-neutrophil cytoplasmic antibodies (pANCA), which are a hallmark of IBD. The binding is due to pANCA directed against HIST1H1D cross-reacting with DBH epitopes. In CD, target of a strong IgA response. Publication Abstract from PubMed The nucleoid-associated protein HU plays an important role in maintenance of chromosomal architecture and in global regulation of DNA transactions in bacteria. Although HU is essential for growth in Mycobacterium tuberculosis (Mtb), there have been no reported attempts to perturb HU function with small molecules. Here we report the crystal structure of the N-terminal domain of HU from Mtb. We identify a core region within the HU-DNA interface that can be targeted using stilbene derivatives. These small molecules specifically inhibit HU-DNA binding, disrupt nucleoid architecture and reduce Mtb growth. The stilbene inhibitors induce gene expression changes in Mtb that resemble those induced by HU deficiency. Our results indicate that HU is a potential target for the development of therapies against tuberculosis. Targeting Mycobacterium tuberculosis nucleoid-associated protein HU with structure-based inhibitors.,Bhowmick T, Ghosh S, Dixit K, Ganesan V, Ramagopal UA, Dey D, Sarma SP, Ramakumar S, Nagaraja V Nat Commun. 2014 Jun 11;5:4124. doi: 10.1038/ncomms5124. PMID:24916461 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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