Download MendeleyReversible Inhibition of Copper Amine Oxidase Activity by Channel-Blocking Ruthenium(II) and Rhenium(I) Molecular Wires.
Contakes, S.M., Juda, G.A., Langley, D.B., Halpern-Manners, N.W., Duff, A.P., Dunn, A.R., Gray, H.B., Dooley, D.M., Guss, J.M., Freeman, H.C.(2005) Proc Natl Acad Sci U S A 102: 13451
- PubMed: 16157884
- DOI: https://doi.org/10.1073/pnas.0506336102
- Primary Citation of Related Structures:
2BT3 - PubMed Abstract:
Molecular wires comprising a Ru(II)- or Re(I)-complex head group, an aromatic tail group, and an alkane linker reversibly inhibit the activity of the copper amine oxidase from Arthrobacter globiformis (AGAO), with K(i) values between 6 muM and 37 nM. In the crystal structure of a Ru(II)-wire:AGAO conjugate, the wire occupies the AGAO active-site substrate access channel, the trihydroxyphenylalanine quinone cofactor is ordered in the "off-Cu" position with its reactive carbonyl oriented toward the inhibitor, and the "gate" residue, Tyr-296, is in the "open" position. Head groups, tail-group substituents, and linker lengths all influence wire-binding interactions with the enzyme.
Organizational Affiliation:
Beckman Institute, California Institute of Technology, Pasadena, CA 91125, USA.
