ID A8ACC4_IGNH4 Unreviewed; 373 AA.
AC A8ACC4;
DT 23-OCT-2007, integrated into UniProtKB/TrEMBL.
DT 23-OCT-2007, sequence version 1.
DT 24-JAN-2024, entry version 89.
DE RecName: Full=Carbamoyl-phosphate synthase small chain {ECO:0000256|HAMAP-Rule:MF_01209};
DE EC=6.3.5.5 {ECO:0000256|HAMAP-Rule:MF_01209};
DE AltName: Full=Carbamoyl-phosphate synthetase glutamine chain {ECO:0000256|HAMAP-Rule:MF_01209};
GN Name=carA {ECO:0000256|HAMAP-Rule:MF_01209};
GN OrderedLocusNames=Igni_1400 {ECO:0000313|EMBL:ABU82576.1};
OS Ignicoccus hospitalis (strain KIN4/I / DSM 18386 / JCM 14125).
OC Archaea; Thermoproteota; Thermoprotei; Desulfurococcales;
OC Desulfurococcaceae; Ignicoccus.
OX NCBI_TaxID=453591 {ECO:0000313|EMBL:ABU82576.1, ECO:0000313|Proteomes:UP000000262};
RN [1] {ECO:0000313|EMBL:ABU82576.1, ECO:0000313|Proteomes:UP000000262}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KIN4/I / DSM 18386 / JCM 14125
RC {ECO:0000313|Proteomes:UP000000262};
RX PubMed=19000309; DOI=10.1186/gb-2008-9-11-r158;
RA Podar M., Anderson I., Makarova K.S., Elkins J.G., Ivanova N., Wall M.A.,
RA Lykidis A., Mavromatis K., Sun H., Hudson M.E., Chen W., Deciu C.,
RA Hutchison D., Eads J.R., Anderson A., Fernandes F., Szeto E., Lapidus A.,
RA Kyrpides N.C., Saier M.H.Jr., Richardson P.M., Rachel R., Huber H.,
RA Eisen J.A., Koonin E.V., Keller M., Stetter K.O.;
RT "A genomic analysis of the archaeal system Ignicoccus hospitalis-
RT Nanoarchaeum equitans.";
RL Genome Biol. 9:R158.1-R158.18(2008).
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:0000256|HAMAP-
CC Rule:MF_01209};
CC -!- PATHWAY: Amino-acid biosynthesis; L-arginine biosynthesis; carbamoyl
CC phosphate from bicarbonate: step 1/1. {ECO:0000256|HAMAP-
CC Rule:MF_01209}.
CC -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway;
CC (S)-dihydroorotate from bicarbonate: step 1/3. {ECO:0000256|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:0000256|ARBA:ARBA00011275, ECO:0000256|HAMAP-Rule:MF_01209}.
CC -!- SIMILARITY: Belongs to the CarA family. {ECO:0000256|HAMAP-
CC Rule:MF_01209}.
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DR EMBL; CP000816; ABU82576.1; -; Genomic_DNA.
DR AlphaFoldDB; A8ACC4; -.
DR STRING; 453591.Igni_1400; -.
DR MEROPS; C26.A33; -.
DR KEGG; iho:Igni_1400; -.
DR eggNOG; arCOG00064; Archaea.
DR HOGENOM; CLU_035901_1_1_2; -.
DR OMA; CFNTGMT; -.
DR OrthoDB; 7675at2157; -.
DR PhylomeDB; A8ACC4; -.
DR UniPathway; UPA00068; UER00171.
DR UniPathway; UPA00070; UER00115.
DR Proteomes; UP000000262; 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-UniRule.
DR CDD; cd01744; GATase1_CPSase; 1.
DR Gene3D; 3.40.50.880; -; 1.
DR Gene3D; 3.50.30.20; Carbamoyl-phosphate synthase small subunit, N-terminal domain; 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 NCBIfam; TIGR01368; CPSaseIIsmall; 1.
DR PANTHER; PTHR11405:SF4; CARBAMOYL-PHOSPHATE SYNTHASE ARGININE-SPECIFIC SMALL CHAIN; 1.
DR PANTHER; PTHR11405; CARBAMOYLTRANSFERASE FAMILY MEMBER; 1.
DR Pfam; PF00988; CPSase_sm_chain; 1.
DR Pfam; PF00117; GATase; 1.
DR PRINTS; PR00097; ANTSNTHASEII.
DR PRINTS; PR00099; CPSGATASE.
DR PRINTS; PR00096; GATASE.
DR SMART; SM01097; CPSase_sm_chain; 1.
DR SUPFAM; SSF52021; Carbamoyl phosphate synthetase, small subunit N-terminal domain; 1.
DR SUPFAM; SSF52317; Class I glutamine amidotransferase-like; 1.
DR PROSITE; PS51273; GATASE_TYPE_1; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|HAMAP-Rule:MF_01209};
KW Arginine biosynthesis {ECO:0000256|ARBA:ARBA00022571, ECO:0000256|HAMAP-
KW Rule:MF_01209};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01209};
KW Glutamine amidotransferase {ECO:0000256|HAMAP-Rule:MF_01209,
KW ECO:0000256|PROSITE-ProRule:PRU00605};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_01209};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01209}; Pyrimidine biosynthesis {ECO:0000256|HAMAP-Rule:MF_01209};
KW Reference proteome {ECO:0000313|Proteomes:UP000000262}.
FT DOMAIN 6..146
FT /note="Carbamoyl-phosphate synthase small subunit N-
FT terminal"
FT /evidence="ECO:0000259|SMART:SM01097"
FT REGION 1..181
FT /note="CPSase"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT ACT_SITE 263
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 349
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 351
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
SQ SEQUENCE 373 AA; 41291 MW; 69551FF38E5C862B CRC64;
MRCRGDKAFL VLEDLSIFEG CAFGARAVRV GEVVFTTTMN GYPEALTDPS YKGQILIMTH
PMVGNYGVPD PNIIDPKSNL PLHYESNGIK VEGFVIARLT KPNHWASVKD LDEWFKEEGV
PGIQGVDTRM LVKKIREKGV MMGAITTTGD VEDAIRALES APRYDEVDYV SSVRPPKVME
HGSGEPVALL DCGVKYGIVR ELASRGLKVI RVPCGEGLKI LDEVKGVVLA NGPGNPTMAM
EKYNLHKFVE AAYELGLPIL AICLGHQILN MTFGGRVYKM KYGHRGVNKP VKDSEGRCFI
VSENHGYAVD PKTIDNVKFR KWFVNPDDNT LEGVISKDPK RPVFSVQFHP ESSPGPHDTL
WIFDKFASEV KAQ
//