ID   FERB_SULME              Reviewed;          53 AA.
AC   P81539;
DT   15-JUL-1999, integrated into UniProtKB/Swiss-Prot.
DT   15-JUL-1999, sequence version 1.
DT   03-AUG-2022, entry version 57.
DE   RecName: Full=Ferredoxin B;
DE            Short=FDB;
DE   AltName: Full=Seven-iron ferredoxin;
DE   Flags: Fragment;
OS   Sulfuracidifex metallicus (Sulfolobus metallicus).
OC   Archaea; Crenarchaeota; Thermoprotei; Sulfolobales; Sulfolobaceae;
OC   Sulfuracidifex.
OX   NCBI_TaxID=47303;
RN   [1]
RP   PROTEIN SEQUENCE, AND METHYLATION AT LYS-29.
RA   Gomes C.M., Faria A., Carita J., Mendes J.C., Regalla M., Chicau P.,
RA   Huber H., Stetter K.O., Teixeira M.;
RT   "Di-cluster, seven iron ferredoxins from hyperthermophilic Sulfolobales.";
RL   J. Biol. Inorg. Chem. 3:499-507(1998).
CC   -!- FUNCTION: Ferredoxins are iron-sulfur proteins that transfer electrons
CC       in a wide variety of metabolic reactions.
CC   -!- COFACTOR:
CC       Name=[3Fe-4S] cluster; Xref=ChEBI:CHEBI:21137;
CC       Note=Binds 1 [3Fe-4S] cluster.;
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC       Note=Binds 1 [4Fe-4S] cluster.;
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DR   AlphaFoldDB; P81539; -.
DR   SMR; P81539; -.
DR   GO; GO:0051538; F:3 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
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.
PE   1: Evidence at protein level;
KW   3Fe-4S; 4Fe-4S; Direct protein sequencing; Electron transport; Iron;
KW   Iron-sulfur; Metal-binding; Methylation; Repeat; Transport.
FT   CHAIN           1..>53
FT                   /note="Ferredoxin B"
FT                   /id="PRO_0000159179"
FT   DOMAIN          34..>53
FT                   /note="4Fe-4S ferredoxin-type 1"
FT                   /evidence="ECO:0000250"
FT   REGION          1..35
FT                   /note="N-terminal extension"
FT   BINDING         44
FT                   /ligand="[3Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:21137"
FT                   /evidence="ECO:0000250"
FT   BINDING         50
FT                   /ligand="[3Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:21137"
FT                   /evidence="ECO:0000250"
FT   MOD_RES         29
FT                   /note="N6-methyllysine"
FT                   /evidence="ECO:0000269|Ref.1"
FT   NON_TER         53
SQ   SEQUENCE   53 AA;  5714 MW;  A16E671441F02E6A CRC64;
     GIDPNYRSLP VVKEEQGVKI YGTYEPPTKL GIWGTIVGVD FDLCIADGSC INA