ID   DCMS_PSECH              Reviewed;           4 AA.
AC   P19918;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1991, sequence version 1.
DT   03-AUG-2022, entry version 55.
DE   RecName: Full=Carbon monoxide dehydrogenase small chain;
DE            Short=CO dehydrogenase subunit S;
DE            Short=CO-DH S;
DE            EC=1.2.5.3 {ECO:0000250|UniProtKB:P19921};
DE   Flags: Fragment;
GN   Name=cutS;
OS   Pseudomonas carboxydohydrogena.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales.
OX   NCBI_TaxID=290;
RN   [1]
RP   PROTEIN SEQUENCE.
RX   PubMed=2818128; DOI=10.1007/bf00425170;
RA   Kraut M., Hugendieck I., Herwig S., Meyer O.;
RT   "Homology and distribution of CO dehydrogenase structural genes in
RT   carboxydotrophic bacteria.";
RL   Arch. Microbiol. 152:335-341(1989).
CC   -!- FUNCTION: Catalyzes the oxidation of carbon monoxide to carbon dioxide.
CC       {ECO:0000250|UniProtKB:P19921}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a quinone + CO + H2O = a quinol + CO2; Xref=Rhea:RHEA:48880,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:16526, ChEBI:CHEBI:17245,
CC         ChEBI:CHEBI:24646, ChEBI:CHEBI:132124; EC=1.2.5.3;
CC         Evidence={ECO:0000250|UniProtKB:P19921};
CC   -!- COFACTOR:
CC       Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135; Evidence={ECO:0000250};
CC       Note=Binds 2 [2Fe-2S] clusters. {ECO:0000250};
CC   -!- SUBUNIT: Heterotrimer consisting of a large, a medium and a small
CC       subunit.
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DR   PIR; PL0146; PL0146.
DR   GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0008805; F:carbon-monoxide oxygenase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   2Fe-2S; Direct protein sequencing; Iron; Iron-sulfur; Metal-binding;
KW   Oxidoreductase.
FT   CHAIN           1..>4
FT                   /note="Carbon monoxide dehydrogenase small chain"
FT                   /id="PRO_0000079818"
FT   NON_TER         4
SQ   SEQUENCE   4 AA;  420 MW;  6DD33DD6F0000000 CRC64;
     MAKA