1ork

TET REPRESSOR, CLASS D IN COMPLEX WITH 9-(N,N-DIMETHYLGLYCYLAMIDO)-6-DEMETHYL-6-DEOXY-TETRACYCLINE

spinqualitylabelsall models 1ork, resolution 2.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1ork is a 1 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.4Å Ligands: ATC, MG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function TETR4_ECOLX TetR is the repressor of the tetracycline resistance element; its N-terminal region forms a helix-turn-helix structure and binds DNA. Binding of tetracycline to TetR reduces the repressor affinity for the tetracycline resistance gene (tetA) promoter operator sites. 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 tetracycline analog 9-(N, N-dimethylglycylamido)-6-demethyl-6-deoxy-tetracycline (9glyTc) belongs to a new group of tetracyclines called glycylcyclines. They are strong antibiotics showing reduced sensitivity against the major tetracycline resistance mechanisms. We have determined the crystal structure of 9glyTc in complex with Tet repressor class D, TetR(D), at 2.4 A resolution. Sterical hindrance at the entrance of the tetracycline binding tunnel of TetR by the bulky and charged glycyl amido substituent interferes with conformational changes required for the mechanism of induction, and leads to decreased induction efficiency as observed for point mutations of amino acid residues located in the neighbourhood to the glycylamido moiety of bound 9glyTc. Crystal structure of the tet repressor in complex with a novel tetracycline, 9-(N,N-dimethylglycylamido)- 6-demethyl-6-deoxy-tetracycline.,Orth P, Schnappinger D, Sum PE, Ellestad GA, Hillen W, Saenger W, Hinrichs W J Mol Biol. 1999 Jan 15;285(2):455-61. PMID:9878420 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Tetracycline repressor protein 3D structures

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