ID   ARRB_CHRAT              Reviewed;          30 AA.
AC   P0DW32;
DT   03-AUG-2022, integrated into UniProtKB/Swiss-Prot.
DT   03-AUG-2022, sequence version 1.
DT   03-AUG-2022, entry version 1.
DE   RecName: Full=Arsenate respiratory reductase iron-sulfur subunit ArrB {ECO:0000305};
DE   AltName: Full=Arsenate respiratory reductase small subunit {ECO:0000305};
DE            Short=ARR small subunit {ECO:0000305};
DE   Flags: Fragment;
GN   Name=arrB {ECO:0000303|PubMed:9738904};
OS   Chrysiogenes arsenatis.
OC   Bacteria; Chrysiogenetes; Chrysiogenales; Chrysiogenaceae; Chrysiogenes.
OX   NCBI_TaxID=309797;
RN   [1]
RP   PROTEIN SEQUENCE, FUNCTION, COFACTOR, BIOPHYSICOCHEMICAL PROPERTIES,
RP   SUBUNIT, SUBCELLULAR LOCATION, AND INDUCTION.
RX   PubMed=9738904; DOI=10.1046/j.1432-1327.1998.2550647.x;
RA   Krafft T., Macy J.M.;
RT   "Purification and characterization of the respiratory arsenate reductase of
RT   Chrysiogenes arsenatis.";
RL   Eur. J. Biochem. 255:647-653(1998).
CC   -!- FUNCTION: Component of the arsenate respiratory reductase (Arr)
CC       complex, which catalyzes the reduction of arsenate (As(V)) to arsenite
CC       (As(III)) (PubMed:9738904). ArrB is probably the electron transfer
CC       subunit (By similarity). {ECO:0000250|UniProtKB:Q7WTT9,
CC       ECO:0000269|PubMed:9738904}.
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000305|PubMed:9738904};
CC       Note=Binds 4 [4Fe-4S] cluster. {ECO:0000250|UniProtKB:Q7WTT9};
CC   -!- BIOPHYSICOCHEMICAL PROPERTIES:
CC       Kinetic parameters:
CC         Vmax=7013 umol/min/mg enzyme {ECO:0000269|PubMed:9738904};
CC   -!- SUBUNIT: Heterodimer composed of one large subunit (ArrA) and one small
CC       subunit (ArrB). {ECO:0000269|PubMed:9738904}.
CC   -!- SUBCELLULAR LOCATION: Periplasm {ECO:0000269|PubMed:9738904}.
CC   -!- INDUCTION: Fully induced in the presence of arsenate.
CC       {ECO:0000269|PubMed:9738904}.
CC   -!- MISCELLANEOUS: May also use zinc as a cofactor.
CC       {ECO:0000269|PubMed:9738904}.
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PE   1: Evidence at protein level;
KW   4Fe-4S; Direct protein sequencing; Electron transport; Iron; Iron-sulfur;
KW   Metal-binding; Periplasm; Transport.
FT   CHAIN           1..>30
FT                   /note="Arsenate respiratory reductase iron-sulfur subunit
FT                   ArrB"
FT                   /id="PRO_0000456240"
FT   BINDING         12
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250|UniProtKB:Q7WTT9"
FT   BINDING         15
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250|UniProtKB:Q7WTT9"
FT   BINDING         18
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250|UniProtKB:Q7WTT9"
FT   BINDING         22
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250|UniProtKB:Q7WTT9"
FT   NON_TER         30
FT                   /evidence="ECO:0000305|PubMed:9738904"
SQ   SEQUENCE   30 AA;  3073 MW;  B8CA0F81E2D9E7B3 CRC64;
     AKYGMAIDLH KCAGCGACGL ACKTQNNTDD