2khr

Solution structure of Rv2377c, a MbtH-like protein from Mycobacterium tuberculosis

spinqualitylabelsall models 2khr Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2khr is a 1 chain structure with sequence from Mycobacterium tuberculosis. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function MBTH_MYCTU Could be involved in mycobactin synthesis (By similarity). 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 Mycobacterium tuberculosis protein Rv2377c (71 residues, MW=8.4kDa) has been characterized using nuclear magnetic resonance (NMR) and circular dichroism (CD) spectroscopy. Rv2377c was the first identified member of the MbtH-like family of proteins. MbtH-like proteins have been implicated in siderophore biosynthesis, however, their precise biochemical function remain unknown. Size exclusion chromatography and NMR spectroscopy show that Rv2377c is a monomer in solution. Circular dichroism spectroscopy indicates that Rv2377c unfolds upon heating and will reversibly fold into its native conformation upon cooling. Using NMR-based methods the solution structure of Rv2377c was determined and some of the dynamic properties of the protein studied. The protein contains a three-strand, anti-parallel beta-sheet (beta3:beta1:beta2) nestled against one C-terminal alpha-helix (S44-N55). Weak or absent amide cross peaks in the (1)H-(15)N HSQC spectrum for many of the beta1 and beta2 residues suggest intermediate motion on the ms to mus time scale at the beta1:beta2 interface. Amide cross peaks in the (1)H-(15)N HSQC spectrum are absent for all but one residue at the C-terminus (W56-D71), a region that includes a highly conserved sequence WXDXR, suggesting this region is intrinsically disordered. The latter observation differs with the crystal structure of another MbtH-like protein, PA2412 from Pseudomonas aeruginosa, where a second ordered alpha-helix was observed at the extreme C-terminus. Solution structure of Rv2377c-founding member of the MbtH-like protein family.,Buchko GW, Kim CY, Terwilliger TC, Myler PJ Tuberculosis (Edinb). 2010 Jul;90(4):245-51. PMID:20434955 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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