1baw: Difference between revisions
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==Overview== | ==Overview== | ||
The crystal structure of the 'blue' copper protein plastocyanin from the, cyanobacterium Phormidium laminosum has been solved and refined using 2.8, A X--ray data. P. laminosum plastocyanin crystallizes in space group, P43212 with unit-cell dimensions a = 86.57, c = 91.47 A and with three, protein molecules per asymmetric unit. The final residual R is 19.9%. The, structure was solved using molecular replacement with a search model based, on the crystal structure of a close homologue, Anabaena variabilis, plastocyanin (66% sequence identity). The molecule of P. laminosum, plastocyanin has 105 amino-acid residues. The single Cu atom is, coordinated by the same residues - two histidines, a cysteine and a, methionine - as in other plastocyanins. In the crystal structure, the, three molecules .. | The crystal structure of the 'blue' copper protein plastocyanin from the, cyanobacterium Phormidium laminosum has been solved and refined using 2.8, A X--ray data. P. laminosum plastocyanin crystallizes in space group, P43212 with unit-cell dimensions a = 86.57, c = 91.47 A and with three, protein molecules per asymmetric unit. The final residual R is 19.9%. The, structure was solved using molecular replacement with a search model based, on the crystal structure of a close homologue, Anabaena variabilis, plastocyanin (66% sequence identity). The molecule of P. laminosum, plastocyanin has 105 amino-acid residues. The single Cu atom is, coordinated by the same residues - two histidines, a cysteine and a, methionine - as in other plastocyanins. In the crystal structure, the, three molecules of the asymmetric unit are related by a, non-crystallographic threefold axis. A Zn atom lies between each pair of, neighbouring molecules in this ensemble, being coordinated by a surface, histidine residue of one molecule and by two aspartates of the other. | ||
==About this Structure== | ==About this Structure== | ||
1BAW is a | 1BAW is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Phormidium_laminosum Phormidium laminosum] with CU and ZN as [http://en.wikipedia.org/wiki/ligands ligands]. Structure known Active Sites: CUA, CUB and CUC. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1BAW OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: electron transfer]] | [[Category: electron transfer]] | ||
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 5 14:26:41 2007'' | ||
