1j5h | pdb_00001j5h

Solution Structure of Apo-Neocarzinostatin

spinqualitylabelsall models 1j5h Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1j5h is a 1 chain structure with sequence from Streptomyces carzinostaticus. 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 NCZS_STRCZ NCS has antibiotic activity (for Gram-positive bacteria) and antitumor activity (for certain mouse tumors). NCS binds non-covalently to a chromophore which is the cytotoxic and mutagenic component of the antibiotic. The chromophore binds to DNA as a weak intercalator and causes single- and double-strand breaks. Publication Abstract from PubMed The natural complex Neocarzinostatin comprises a labile chromophore noncovalently bound to an 11.2 kDa protein. We present the first high-resolution structure of a novel complex derived from the recombinant apoprotein bound to a non-natural synthetic chromophore. Fluorescence and nuclear magnetic resonance spectroscopy were used to probe the strength and location of binding. Binding occurred in a location similar to that observed for the chromophore in the natural Neocarzinostatin complex, but with a distinct orientation. These results provide structural evidence that the apoprotein can readily accommodate small druglike entities, other than the natural chromophore within its binding cleft. The clinical use of the natural complex described by others, together with the results reported here, suggests potential applications for small molecule binding by apo-Neocarzinostatin. Solution structure of a novel chromoprotein derived from apo-neocarzinostatin and a synthetic chromophore.,Urbaniak MD, Muskett FW, Finucane MD, Caddick S, Woolfson DN Biochemistry. 2002 Oct 1;41(39):11731-9. PMID:12269815 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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