2g0l | pdb_00002g0l

Solution Structure of Neocarzinostatin Apo-Protein with bound Flavone

spinqualitylabelsall models 2g0l Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2g0l 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 Ligands: FLN 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 Neocarzinostatin (NCS) is a 1:1 complex of an enediyne chromophore (NCSChrom), non-covalently bound to an 11 kDa protein (apoNCS). We are exploring apoNCS as a generic protein system for sequestering small molecules for therapeutic applications. Here, we disclose a new flavone ligand 1 for apoNCS and present a high-resolution NMR structure of this ligand bound to apoNCS. This is the first high-resolution structure of a completely non-cognate ligand bound to the apoNCS protein. This work provides unambiguous evidence that a completely new class of ligand can bind specifically to apoNCS. Furthermore, the mode of binding is different than that of the naphthoate-based ligands, and for such a simple hydrophobic compound, the new ligand surprisingly binds specifically. This work indicates that apo-Neocarzinostatin has multiple selective and distinct binding modes for small-molecule cargo. Synthetic ligands for apo-neocarzinostatin.,Caddick S, Muskett FW, Stoneman RG, Woolfson DN J Am Chem Soc. 2006 Apr 5;128(13):4204-5. PMID:16568976 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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