1ag6 | pdb_00001ag6

PLASTOCYANIN FROM SPINACH

spinqualitylabelsall models 1ag6, resolution 1.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1ag6 is a 1 chain structure with sequence from Spiol. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CU Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [PLAS_SPIOL] Participates in electron transfer between P700 and the cytochrome b6-f complex in photosystem I. 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 PubMed The crystal structure of plastocyanin from spinach has been determined using molecular replacement, with the structure of plastocyanin from poplar as a search model. Successful crystallization was facilitated by site-directed mutagenesis in which residue Gly8 was substituted with Asp. The region around residue 8 was believed to be too mobile for the wild-type protein to form crystals despite extensive screening. The current structure represents the oxidized plastocyanin, copper (II), at low pH (approximately 4.4). In contrast to the similarity in the core region as compared to its poplar counterpart, the structure shows some significant differences in loop regions. The most notable is the large shift of the 59-61 loop where the largest shift is 3.0 A for the C(alpha) atom of Glu59. This results in different patterns of electrostatic potential around the acidic patches for the two proteins. Crystal structure of spinach plastocyanin at 1.7 A resolution.,Xue Y, Okvist M, Hansson O, Young S Protein Sci. 1998 Oct;7(10):2099-105. PMID:9792096 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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