1iuz

OverviewOverview

The crystal structure of plastocyanin from a green alga, Ulva pertusa, has, been determined at 1.6-A resolution. At its copper site, U. pertusa, plastocyanin has a distorted tetrahedral coordination geometry similar to, other plastocyanins. In comparison with structures of plastocyanins, reported formerly, a Cu(II)-Sdelta(Met92) bond distance (2.69 A) is, shorter by about 0.2 A and a Cu(II)-Sgamma(Cys84) distance is longer by, less than 0.1 A in U. pertusa plastocyanin. These subtle but significant, differences are caused by the structural change at a His-Met loop, (His87-Met92) due to an absence of a O(Asp85)-Ogamma(Ser88) hydrogen bond, which is found in Enteromorpha prolifera plastocyanin. In addition, poplar, and Chlamydomonas reinhardtii plastocyanins with a glutamine at residue 88, ... [(full description)]

About this StructureAbout this Structure

1IUZ is a [Single protein] structure of sequence from [Ulva pertusa] with CU and SO4 as [ligands]. Structure known Active Site: COP. Full crystallographic information is available from [OCA].

ReferenceReference

Novel insight into the copper-ligand geometry in the crystal structure of Ulva pertusa plastocyanin at 1.6-A resolution. Structural basis for regulation of the copper site by residue 88., Shibata N, Inoue T, Nagano C, Nishio N, Kohzuma T, Onodera K, Yoshizaki F, Sugimura Y, Kai Y, J Biol Chem. 1999 Feb 12;274(7):4225-30. PMID:9933621

Page seeded by OCA on Tue Oct 30 15:40:04 2007

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA