Function
Amicyanin (ACY) is a copper protein which is part of a electron transfer complex with Methylamine dehydrogenase and Cytochrome C-551[1]. ACY serves as the electron acceptor for methyl amine dehydrogenase. ACY belongs to type I copper proteins in which the copper is coordinated by 2 His residues, a Lys residue and a variable ligand in a trigonal planar structure.
Structural highlights
The 3D structure of ACY shows that the protein assumes a β-sandwich topology. The Cu+2 binding site has tetragonal geometry with interactions to 2 His, Cys and Met side chains. ACY interacts with methylamine dehydrogenase via a hydrophobic patch and Arg salt bridge[2].
3D structures of amicyanin
Amicyanin 3D structures
