ID   FER3_LEPBY              Reviewed;          96 AA.
AC   P46036;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   03-AUG-2022, entry version 80.
DE   RecName: Full=Ferredoxin-3;
DE   AltName: Full=Ferredoxin III;
DE            Short=FdIII;
GN   Name=fdxB;
OS   Leptolyngbya boryana (Plectonema boryanum).
OC   Bacteria; Cyanobacteria; Pseudanabaenales; Leptolyngbyaceae; Leptolyngbya.
OX   NCBI_TaxID=1184;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 18200 / UTEX 594 / PCC 73110;
RX   PubMed=8106314; DOI=10.1128/jb.176.4.1037-1046.1994;
RA   Schrautemeier B., Cassing A., Boehme H.;
RT   "Characterization of the genome region encoding an fdxH-type ferredoxin and
RT   a new 2[4Fe-4S] ferredoxin from the nonheterocystous, nitrogen-fixing
RT   cyanobacterium Plectonema boryanum PCC 73110.";
RL   J. Bacteriol. 176:1037-1046(1994).
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; Evidence={ECO:0000250};
CC       Note=Binds 2 [4Fe-4S] clusters. {ECO:0000250};
CC   -!- SUBUNIT: Homodimer. {ECO:0000250}.
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DR   EMBL; X71865; CAA50700.1; -; Genomic_DNA.
DR   PIR; D49890; D49890.
DR   AlphaFoldDB; P46036; -.
DR   SMR; P46036; -.
DR   PRIDE; P46036; -.
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   TIGRFAMs; TIGR02936; fdxN_nitrog; 1.
DR   PROSITE; PS00198; 4FE4S_FER_1; 2.
DR   PROSITE; PS51379; 4FE4S_FER_2; 2.
PE   3: Inferred from homology;
KW   4Fe-4S; Electron transport; Iron; Iron-sulfur; Metal-binding;
KW   Nitrogen fixation; Repeat; Transport.
FT   CHAIN           1..96
FT                   /note="Ferredoxin-3"
FT                   /id="PRO_0000159187"
FT   DOMAIN          18..47
FT                   /note="4Fe-4S ferredoxin-type 1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00711"
FT   DOMAIN          65..95
FT                   /note="4Fe-4S ferredoxin-type 2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00711"
FT   BINDING         27
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         30
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         33
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         37
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         75
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         78
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         81
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         85
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   96 AA;  10694 MW;  2970C67DF4B438B5 CRC64;
     MATLTNVTFG GTAWIPQFVQ SINQTKCIGC GRCFKACGRD VLALKALNDE GEWVEDEDDE
     EIERKVMTIA NRDKCIGCEA CSRVCPKNCY THESLN