1CPR
ST. LOUIS CYTOCHROME C' FROM THE PURPLE PHOTOTROPIC BACTERIUM, RHODOBACTER CAPSULATUS
Summary for 1CPR
| Entry DOI | 10.2210/pdb1cpr/pdb |
| Descriptor | CYTOCHROME C', ZINC ION, PROTOPORPHYRIN IX CONTAINING FE, ... (4 entities in total) |
| Functional Keywords | electron transport, heme protein, cytochrome |
| Biological source | Rhodobacter capsulatus |
| Total number of polymer chains | 1 |
| Total formula weight | 14149.65 |
| Authors | Tahirov, T.H.,Misaki, S.,Meyer, T.E.,Cusanovich, M.A.,Yasuoka, N. (deposition date: 1996-04-09, release date: 1997-01-27, Last modification date: 2024-11-20) |
| Primary citation | Tahirov, T.H.,Misaki, S.,Meyer, T.E.,Cusanovich, M.A.,Higuchi, Y.,Yasuoka, N. Structure of cytochrome c' from Rhodobacter capsulatus strain St Louis: an unusual molecular association induced by bridging Zn ions. Acta Crystallogr.,Sect.D, 53:658-664, 1997 Cited by PubMed Abstract: Rhodobacter capsulatus strain St Louis cytochrome c' (RCCP-SL) has been crystallized and the structure solved by molecular replacement. It was refined at 2.1 A resolution to an R value of 18.4%, and compared with Rhodobacter capsulatus strain M110 cytochrome c' (RCCP-M110). Although these two proteins are very similar in sequence and structure, the intermolecular interaction is largely different. In RCCP-M110, the molecules dimerize through interaction of helix B to form an antiparallel arrangement. When crystallized in the presence of Zn ions, molecules of RCCP-SL were found to be arranged as linear polymers connected by the bridging Zn ions. The changes in conformation of the side chains induced by binding of the Zn ions, by the substitution of Glu90 for Asp90, and by the different arrangement of the molecules, are discussed in detail. PubMed: 15299853DOI: 10.1107/S0907444997005805 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2.1 Å) |
Structure validation
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