5l4r

X-ray structure of the adduct between thaumatin and cisplatin

spinqualitylabelsall models 5l4r, resolution 1.45Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5l4r is a 1 chain structure with sequence from Thaumatococcus daniellii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.45Å Ligands: 73M, CPT, GOL, TLA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function THM1_THADA Taste-modifying protein; intensely sweet-tasting. It is 100000 times sweeter than sucrose on a molar basis. Publication Abstract from PubMed Literature studies carried out by mass spectrometry and X-ray crystallography have demonstrated that cisplatin is able to bind proteins mainly close to Met, His, and free Cys side chains. To identify possible alternative modes of cisplatin binding to proteins at the molecular level, here we have solved the high-resolution X-ray structure of the adduct formed in the reaction between the drug and the model protein thaumatin, which does not contain any His and free Cys residues and possesses just one buried Met. Our data reveal unexpected cisplatin binding sites on the protein surface that could have general significance: cisplatin fragments -[Pt(NH3)2Cl](+), -[Pt(NH3)Cl2], and -[Pt(NH3)2(OH2)](2+) bind to a protein N-terminus and close to Lys and Glu side chains. Cisplatin-Protein Interactions: Unexpected Drug Binding to N-Terminal Amine and Lysine Side Chains.,Russo Krauss I, Ferraro G, Merlino A Inorg Chem. 2016 Aug 15;55(16):7814-6. doi: 10.1021/acs.inorgchem.6b01234. Epub, 2016 Aug 2. PMID:27482735 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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