1put
AN NMR-DERIVED MODEL FOR THE SOLUTION STRUCTURE OF OXIDIZED PUTIDAREDOXIN, A 2FE, 2-S FERREDOXIN FROM PSEUDOMONASAN NMR-DERIVED MODEL FOR THE SOLUTION STRUCTURE OF OXIDIZED PUTIDAREDOXIN, A 2FE, 2-S FERREDOXIN FROM PSEUDOMONAS
Structural highlights
Function[PUTX_PSEPU] The oxidation of camphor by cytochrome P450-CAM requires the participation of a flavoprotein, putidaredoxin reductase, and an iron-sulfur protein, putidaredoxin, to mediate the transfer of electrons from NADH to P450 for oxygen activation. 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 PubMedA model for the solution structure of oxidized putidaredoxin (Pdx), a 106-residue globular protein containing a Fe2S2 cluster, has been determined using homonuclear NMR methods. Pdx is the first of the class of Fe2S2Cys4 ferredoxins which act as electron-transfer partners for P-450 monooxygenases to be structurally characterized, and no crystal structure has been determined for Pdx or for any closely homologous protein. Pdx is the physiological redox partner of cytochrome P-450cam. A total of 878 NOE distance constraints, 66 phi angular constraints derived from NH-C alpha H coupling constants, and five paramagnetic broadening constraints were used in simulated annealing structural refinements to obtain a family of structures with pairwise rms deviations of 1.14 A for backbone atoms and 1.80 A for all non-hydrogen atoms. Paramagnetic broadening of resonances within a ca. 8-A radius of the metal cluster prevents the use of NMR-derived constraints in this region of the protein; structural constraints used to model the environment of the metal cluster were obtained from site-directed mutagenesis and model compounds and by comparison with known ferredoxin structures. Pdx retains a similar folding topology to other structurally characterized Fe2S2Cys4 ferredoxins but differs from the other ferredoxins in containing a significantly more compact structure in the C-terminal half of the protein. An NMR-derived model for the solution structure of oxidized putidaredoxin, a 2-Fe, 2-S ferredoxin from Pseudomonas.,Pochapsky TC, Ye XM, Ratnaswamy G, Lyons TA Biochemistry. 1994 May 31;33(21):6424-32. PMID:8204575[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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