1g2h

SOLUTION STRUCTURE OF THE DNA-BINDING DOMAIN OF THE TYRR PROTEIN OF HAEMOPHILUS INFLUENZAE

spinqualitylabelsall models 1g2h Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1g2h is a 1 chain structure with sequence from Haemophilus influenzae. 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 TYRR_HAEIN Involved in transcriptional regulation of aromatic amino acid biosynthesis and transport. 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 TyrR protein of Haemophilus influenzae is a 36-kD transcription factor whose major function is to control the expression of genes important in the biosynthesis and transport of aromatic amino acids. Using (1)H and (15)N NMR spectroscopy, we have determined the 3D solution structure of the TyrR C-terminal DNA-binding domain (DBD) containing residues from 258 to 318 (TyrR[258-318]). The NMR results show that this segment of TyrR consists of a potential hinge helix at its N terminus (residues 263-270) as well as three well-defined alpha-helices extending from residues 277-289 (HR-2), 293-300 (HR-1), and 304-314 (HR). Helix HR-1 and HR fold in a typical helix-turn-helix (HTH) motif. The three helices and the hinge helix are tightly bound together by hydrophobic interaction and hydrogen bonds. Several hydrophilic residues whose side chains may directly interact with DNA are identified. A hydrophobic patch that may be part of the interaction surface between the domains of TyrR protein is also observed. Comparisons with the structures of other HTH DNA-binding proteins reveal that in terms of the spatial orientation of the three helices, this protein most closely resembles the cap family. Solution structure of the DNA-binding domain of the TyrR protein of Haemophilus influenzae.,Wang Y, Zhao S, Somerville RL, Jardetzky O Protein Sci. 2001 Mar;10(3):592-8. PMID:11344327 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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