ID   FER3_RHOCA              Reviewed;         101 AA.
AC   P20624;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   03-AUG-2022, entry version 103.
DE   RecName: Full=Ferredoxin-3;
DE   AltName: Full=Ferredoxin III;
DE            Short=FdIII;
GN   Name=fdxB;
OS   Rhodobacter capsulatus (Rhodopseudomonas capsulata).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Rhodobacter.
OX   NCBI_TaxID=1061;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=2708314; DOI=10.1128/jb.171.5.2591-2598.1989;
RA   Moreno-Vivian C., Hennecke S., Puehler A., Klipp W.;
RT   "Open reading frame 5 (ORF5), encoding a ferredoxinlike protein, and nifQ
RT   are cotranscribed with nifE, nifN, nifX, and ORF4 in Rhodobacter
RT   capsulatus.";
RL   J. Bacteriol. 171:2591-2598(1989).
RN   [2]
RP   PARTIAL PROTEIN SEQUENCE, AND CHARACTERIZATION.
RX   PubMed=8387524; DOI=10.1016/s0021-9258(18)82245-1;
RA   Jouanneau Y., Meyer C., Gaillard J., Forest E., Gagnon J.;
RT   "Purification and characterization of a novel dimeric ferredoxin (FdIII)
RT   from Rhodobacter capsulatus.";
RL   J. Biol. Chem. 268:10636-10644(1993).
CC   -!- FUNCTION: Ferredoxins are iron-sulfur proteins that transfer electrons
CC       in a wide variety of metabolic reactions.
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC       Note=Binds 2 [4Fe-4S] clusters.;
CC   -!- SUBUNIT: Homodimer.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAA26146.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; M26323; AAA26146.1; ALT_INIT; Genomic_DNA.
DR   PIR; B32308; FERF3C.
DR   RefSeq; WP_023923722.1; NZ_VIBE01000016.1.
DR   AlphaFoldDB; P20624; -.
DR   GeneID; 31492055; -.
DR   OMA; ICPKKCY; -.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0009399; P:nitrogen fixation; IEA:UniProtKB-KW.
DR   InterPro; IPR017896; 4Fe4S_Fe-S-bd.
DR   InterPro; IPR017900; 4Fe4S_Fe_S_CS.
DR   InterPro; IPR014283; FdIII_4_nif.
DR   Pfam; PF13237; Fer4_10; 1.
DR   TIGRFAMs; TIGR02936; fdxN_nitrog; 1.
DR   PROSITE; PS00198; 4FE4S_FER_1; 2.
DR   PROSITE; PS51379; 4FE4S_FER_2; 2.
PE   1: Evidence at protein level;
KW   4Fe-4S; Direct protein sequencing; Electron transport; Iron; Iron-sulfur;
KW   Metal-binding; Nitrogen fixation; Repeat; Transport.
FT   INIT_MET        1
FT                   /note="Removed"
FT   CHAIN           2..101
FT                   /note="Ferredoxin-3"
FT                   /id="PRO_0000159189"
FT   DOMAIN          17..46
FT                   /note="4Fe-4S ferredoxin-type 1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00711"
FT   DOMAIN          70..100
FT                   /note="4Fe-4S ferredoxin-type 2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00711"
FT   BINDING         26
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         29
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         32
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         36
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         80
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         83
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         86
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         90
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   101 AA;  10819 MW;  2F6339AE450C532F CRC64;
     MPTVAYTRGG AEYTPVYLMK IDEQKCIGCG RCFKVCGRDV MSLHGLTEDG QVVAPGTDEW
     DEVEDEIVKK VMALTGAENC IGCGACARVC PSECQTHAAL S