3TU6
The Structure of a Pseudoazurin From Sinorhizobium meliltoi
Summary for 3TU6
| Entry DOI | 10.2210/pdb3tu6/pdb |
| Descriptor | Pseudoazurin (Blue copper protein), COPPER (II) ION, GLYCEROL, ... (4 entities in total) |
| Functional Keywords | cupredoxins, beta barrel, electron transfer, redox, electron transport |
| Biological source | Sinorhizobium meliloti |
| Total number of polymer chains | 1 |
| Total formula weight | 13613.16 |
| Authors | Laming, E.M.,McGrath, A.P.,Guss, J.M.,Maher, M.J. (deposition date: 2011-09-16, release date: 2012-05-30, Last modification date: 2024-02-28) |
| Primary citation | Laming, E.M.,McGrath, A.P.,Guss, J.M.,Kappler, U.,Maher, M.J. The X-ray crystal structure of a pseudoazurin from Sinorhizobium meliloti. J.Inorg.Biochem., 115:148-154, 2012 Cited by PubMed Abstract: The X-ray crystal structure of oxidised pseudoazurin from the denitrifying plant symbiotic bacterium Sinorhizobium meliloti (SmPAz2) has been solved to a resolution of 2.0 Å. The pseudoazurin from Sinorhizobium sp. is unusual as it forms an operon with a sulfite dehydrogenase enzyme, rather than a Cu nitrite reductase. Examination of the structure reveals that the geometric parameters of the Type I Cu site in SmPAz2 correlate with observed features in the electronic spectrum of the protein. Comparison of the structure of SmPAz2 with those of pseudoazurins from five other bacterial species shows that the surface of SmPAz2 bears a conserved hydrophobic patch encircled by positively-charged residues, which may serve as a recognition site for its redox partners. PubMed: 22776735DOI: 10.1016/j.jinorgbio.2012.04.005 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2 Å) |
Structure validation
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