ID   CARA_METM5              Reviewed;         366 AA.
AC   A4G0Y3;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   17-APR-2007, sequence version 1.
DT   25-MAY-2022, entry version 84.
DE   RecName: Full=Carbamoyl-phosphate synthase small chain {ECO:0000255|HAMAP-Rule:MF_01209};
DE            EC=6.3.5.5 {ECO:0000255|HAMAP-Rule:MF_01209};
DE   AltName: Full=Carbamoyl-phosphate synthetase glutamine chain {ECO:0000255|HAMAP-Rule:MF_01209};
GN   Name=carA {ECO:0000255|HAMAP-Rule:MF_01209}; OrderedLocusNames=MmarC5_1820;
OS   Methanococcus maripaludis (strain C5 / ATCC BAA-1333).
OC   Archaea; Euryarchaeota; Methanomada group; Methanococci; Methanococcales;
OC   Methanococcaceae; Methanococcus.
OX   NCBI_TaxID=402880;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=C5 / ATCC BAA-1333;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Chertkov O., Brettin T., Bruce D., Han C.,
RA   Detter J.C., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N.,
RA   Mikhailova N., Sieprawska-Lupa M., Whitman W.B., Richardson P.;
RT   "Complete sequence of chromosome of Methanococcus maripaludis C5.";
RL   Submitted (MAR-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 ATP + H2O + hydrogencarbonate + L-glutamine = 2 ADP +
CC         carbamoyl phosphate + 2 H(+) + L-glutamate + phosphate;
CC         Xref=Rhea:RHEA:18633, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:17544, ChEBI:CHEBI:29985, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:43474, ChEBI:CHEBI:58228, ChEBI:CHEBI:58359,
CC         ChEBI:CHEBI:456216; EC=6.3.5.5; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01209};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-arginine biosynthesis; carbamoyl
CC       phosphate from bicarbonate: step 1/1. {ECO:0000255|HAMAP-
CC       Rule:MF_01209}.
CC   -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway;
CC       (S)-dihydroorotate from bicarbonate: step 1/3. {ECO:0000255|HAMAP-
CC       Rule:MF_01209}.
CC   -!- SUBUNIT: Composed of two chains; the small (or glutamine) chain
CC       promotes the hydrolysis of glutamine to ammonia, which is used by the
CC       large (or ammonia) chain to synthesize carbamoyl phosphate.
CC       {ECO:0000255|HAMAP-Rule:MF_01209}.
CC   -!- SIMILARITY: Belongs to the CarA family. {ECO:0000255|HAMAP-
CC       Rule:MF_01209}.
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DR   EMBL; CP000609; ABO36117.1; -; Genomic_DNA.
DR   RefSeq; WP_011869562.1; NC_009135.1.
DR   AlphaFoldDB; A4G0Y3; -.
DR   SMR; A4G0Y3; -.
DR   STRING; 402880.MmarC5_1820; -.
DR   EnsemblBacteria; ABO36117; ABO36117; MmarC5_1820.
DR   GeneID; 4927889; -.
DR   KEGG; mmq:MmarC5_1820; -.
DR   eggNOG; arCOG00064; Archaea.
DR   HOGENOM; CLU_035901_2_1_2; -.
DR   OMA; CFNTGMT; -.
DR   OrthoDB; 35557at2157; -.
DR   UniPathway; UPA00068; UER00171.
DR   UniPathway; UPA00070; UER00115.
DR   Proteomes; UP000000253; Chromosome.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004088; F:carbamoyl-phosphate synthase (glutamine-hydrolyzing) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006207; P:'de novo' pyrimidine nucleobase biosynthetic process; IEA:InterPro.
DR   GO; GO:0044205; P:'de novo' UMP biosynthetic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0006526; P:arginine biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0006541; P:glutamine metabolic process; IEA:UniProtKB-KW.
DR   CDD; cd01744; GATase1_CPSase; 1.
DR   Gene3D; 3.40.50.880; -; 1.
DR   Gene3D; 3.50.30.20; -; 1.
DR   HAMAP; MF_01209; CPSase_S_chain; 1.
DR   InterPro; IPR006274; CarbamoylP_synth_ssu.
DR   InterPro; IPR002474; CarbamoylP_synth_ssu_N.
DR   InterPro; IPR036480; CarbP_synth_ssu_N_sf.
DR   InterPro; IPR029062; Class_I_gatase-like.
DR   InterPro; IPR035686; CPSase_GATase1.
DR   InterPro; IPR017926; GATASE.
DR   Pfam; PF00988; CPSase_sm_chain; 1.
DR   Pfam; PF00117; GATase; 1.
DR   SMART; SM01097; CPSase_sm_chain; 1.
DR   SUPFAM; SSF52021; SSF52021; 1.
DR   SUPFAM; SSF52317; SSF52317; 1.
DR   TIGRFAMs; TIGR01368; CPSaseIIsmall; 1.
DR   PROSITE; PS51273; GATASE_TYPE_1; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Arginine biosynthesis; ATP-binding;
KW   Glutamine amidotransferase; Ligase; Nucleotide-binding;
KW   Pyrimidine biosynthesis.
FT   CHAIN           1..366
FT                   /note="Carbamoyl-phosphate synthase small chain"
FT                   /id="PRO_1000138867"
FT   DOMAIN          172..363
FT                   /note="Glutamine amidotransferase type-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT   REGION          1..172
FT                   /note="CPSase"
FT   ACT_SITE        247
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT   ACT_SITE        336
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT   ACT_SITE        338
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
SQ   SEQUENCE   366 AA;  40552 MW;  C75C33039A2DB46A CRC64;
     MYGILVLEDG TIIRGDGFGA ETEVLGELVF NTSMTGYVEI LTDPSYKGQI VTMTYPLEGN
     YGVEKEWFES DGIKAEGFVV KDMTGSKLDE FLKEYNIPGI SGVDTRYITR KIRSKGVIRS
     LLKTSTNPIT KDEETELIKK VVEYPDISEI DLVPEVSTKE TVIYNAEDEK TRCVLIDCGV
     KQSIIDCLVE RGCSVVKVPY NSKEEEIMSY NPDFVLVSNG PGDPENMAET VETVKNLIGT
     LPVTGICLGH QLITIALGGK TYKLKFGHRG GNQPVKDIDS GKVYITSQNH GFATDDKIVP
     EGSELMHMNL NDDTVEGIRK IESNDLKNTV WSVQYHPEAG PGPHDARFLF DEMVELGIKF
     KAEKAN