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The members of adrenodoxin family are soluble [Fe2S2] iron-sulphur proteins that act as single electron carriers. In mitochondrial monooxygenase systems, adrenodoxin transfers an electron from NADPH:adrenodoxin reductase to membrane-bound P450. In bacteria, putidaredoxin and terpredoxin serve as electron carriers between corresponding NADH-dependent ferredoxin reductases and soluble P450.
In a few bacterial P450-containing systems, the transfer of electrons from flavoprotein reductase to P450 is mediated by [Fe3S4] ferredoxins. Despite functional similarity of such ferredoxins to the adrenodoxin family, they do not share sequence similarity. On the other hand, [Fe3S4] proteins seem to be similar to some mono-[Fe4S4] cluster ferredoxins, but lack a fourth cysteine residue conserved in [Fe4S4] ferredoxins.
Gene Species PIR SwissProt GenBank/EMBL/DDBJ PRF
ADX1 bov JX0094 P00257 M11746 D00467 D00468 D00469 1110265A
D00470 D00471 M19474 M19656 1604300A
ADX2 bov JX0094 P08498 M16934
ADX hum A31853 P10109 J03548 M18003 1404334A
M23665 M23666 M23667 M23668 1502217A
pig A00261 P00258 M57674 0406216A
she S21131 P29330 1809210A
1810330A
rat A39553 P24483 D50436 1713250A
mou L29123 2108273A
D43689 D43690 2119182A
chi A31574 P13216 M21275 U25823 1414191A
YPL252c Sce Z73608
??? Spo Z70043
camB Psp A00262 JX0079 P00259 D00528 J05406 1607265B terpB Pse S27655 P33007 M91440 1817293B thcC Rho P43493 U17130 2104333J fdx Eco JC1110 P25528 M88654 U05338 U01827 1812268A fdx Hin P44428 L45013 fdxB Cac S32573 P37098 X51607 fdVI Rca S45612 P80306 2014236A
Gene Species PIR SwissProt GenBank/EMBL/DDBJ PRF
suaB Sgl A37915 P18324 M32238 M36480 1704152A
subB Sgl B37915 P18325 M32239 M36481 1704152B
soyB Stg S24751 P26910 X63601 S45823 1819469B
fasB Rfa S42053 Z29635 2011281B
ORF3 Bja Q45218 U12678
??? Tli B44203 P29604
fdxA Ser JH0239 P24496 M61119
Bja = Bradyrhizobium japonicum bov = bovine Cac = Caulobacter crescentus chi = chicken Eco = Escherichia coli Hin = Haemophilus influenzae hum = human pig = pig Pse = Pseudomonas species Psp = Pseudomonas putida rat = rat Rca = Rhodobacter capsulatus (Rhodopseudomonas capsulata) Rfa = Rhodococcus fascians Rho = Rhodococcus species Sce = Saccharomyces cerevisiae (baker's yeast) Ser = Saccharopolyspora erythraea Sgl = Streptomyces griseolus she = sheep Spo = Schizosaccharomyces pombe Stg = Streptomyces griseus Tli = Thermococcus litoralis
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