2bt3

Publication Abstract from PubMed

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.

Reversible inhibition of copper amine oxidase activity by channel-blocking ruthenium(II) and rhenium(I) molecular wires.,Contakes SM, Juda GA, Langley DB, Halpern-Manners NW, Duff AP, Dunn AR, Gray HB, Dooley DM, Guss JM, Freeman HC Proc Natl Acad Sci U S A. 2005 Sep 20;102(38):13451-6. Epub 2005 Sep 12. PMID:16157884^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.