3fop
A Triangular Cytochrome b562 Superstructure Mediated by Ni Coordination - Hexagonal FormA Triangular Cytochrome b562 Superstructure Mediated by Ni Coordination - Hexagonal Form
Structural highlights
FunctionC562_ECOLX Electron-transport protein of unknown function. 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 PubMedWe previously devised a strategy (metal-directed protein self-assembly, MDPSA) that utilizes the simultaneous stability, lability, and directionality of metal-ligand bonds to drive protein-protein interactions. Here we show that both the structural and functional scopes of MDPSA can be broadened by incorporation of non-natural metal-chelating ligands onto protein surfaces. A cytochrome cb(562) variant, MBP-Phen1, which features a covalently attached phenanthroline (Phen) group on its surface, self-assembles into an unusual triangular architecture (Ni(3):MBP-Phen1(3)) upon binding Ni as a result of specific Phen-protein interactions. The crystal structure of Ni(3):MBP-Phen1(3) reveals that the Phen group is buried in a small pocket on the protein surface, which results in an unsaturated Ni coordination environment. A superprotein triangle driven by nickel(II) coordination: exploiting non-natural metal ligands in protein self-assembly.,Radford RJ, Tezcan FA J Am Chem Soc. 2009 Jul 8;131(26):9136-7. PMID:19527025[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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