ID B7AQY9_9FIRM Unreviewed; 355 AA.
AC B7AQY9;
DT 10-FEB-2009, integrated into UniProtKB/TrEMBL.
DT 10-FEB-2009, sequence version 1.
DT 27-MAR-2024, entry version 67.
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 ORFNames=BACPEC_01099 {ECO:0000313|EMBL:EEC58111.1};
OS [Bacteroides] pectinophilus ATCC 43243.
OC Bacteria; Bacillota; Clostridia; Eubacteriales.
OX NCBI_TaxID=483218 {ECO:0000313|EMBL:EEC58111.1, ECO:0000313|Proteomes:UP000003136};
RN [1] {ECO:0000313|EMBL:EEC58111.1, ECO:0000313|Proteomes:UP000003136}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43243 {ECO:0000313|EMBL:EEC58111.1,
RC ECO:0000313|Proteomes:UP000003136};
RA Sudarsanam P., Ley R., Guruge J., Turnbaugh P.J., Mahowald M., Liep D.,
RA Gordon J.;
RT "Draft genome sequence of Bacteroides pectinophilus (ATCC 43243).";
RL Submitted (NOV-2008) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EEC58111.1, ECO:0000313|Proteomes:UP000003136}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43243 {ECO:0000313|EMBL:EEC58111.1,
RC ECO:0000313|Proteomes:UP000003136};
RA Fulton L., Clifton S., Fulton B., Xu J., Minx P., Pepin K.H., Johnson M.,
RA Bhonagiri V., Nash W.E., Mardis E.R., Wilson R.K.;
RL Submitted (NOV-2008) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Small subunit of the glutamine-dependent carbamoyl phosphate
CC synthetase (CPSase). CPSase catalyzes the formation of carbamoyl
CC phosphate from the ammonia moiety of glutamine, carbonate, and
CC phosphate donated by ATP, constituting the first step of 2 biosynthetic
CC pathways, one leading to arginine and/or urea and the other to
CC pyrimidine nucleotides. The small subunit (glutamine amidotransferase)
CC binds and cleaves glutamine to supply the large subunit with the
CC substrate ammonia. {ECO:0000256|HAMAP-Rule:MF_01209}.
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 -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + L-glutamine = L-glutamate + NH4(+);
CC Xref=Rhea:RHEA:15889, ChEBI:CHEBI:15377, ChEBI:CHEBI:28938,
CC ChEBI:CHEBI:29985, ChEBI:CHEBI:58359; 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|ARBA:ARBA00005077,
CC ECO:0000256|HAMAP-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. Tetramer of
CC heterodimers (alpha,beta)4. {ECO:0000256|HAMAP-Rule:MF_01209}.
CC -!- SIMILARITY: Belongs to the CarA family. {ECO:0000256|ARBA:ARBA00007800,
CC ECO:0000256|HAMAP-Rule:MF_01209}.
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DR EMBL; ABVQ01000035; EEC58111.1; -; Genomic_DNA.
DR AlphaFoldDB; B7AQY9; -.
DR STRING; 483218.BACPEC_01099; -.
DR eggNOG; COG0505; Bacteria.
DR HOGENOM; CLU_035901_1_1_9; -.
DR UniPathway; UPA00068; UER00171.
DR UniPathway; UPA00070; UER00115.
DR Proteomes; UP000003136; Unassembled WGS sequence.
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|HAMAP-Rule:MF_01209};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01209};
KW Glutamine amidotransferase {ECO:0000256|ARBA:ARBA00022962,
KW ECO:0000256|HAMAP-Rule:MF_01209};
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}.
FT DOMAIN 1..131
FT /note="Carbamoyl-phosphate synthase small subunit N-
FT terminal"
FT /evidence="ECO:0000259|SMART:SM01097"
FT REGION 1..170
FT /note="CPSase"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT ACT_SITE 247
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 332
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 334
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT BINDING 45
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT BINDING 219
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT BINDING 221
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT BINDING 248
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT BINDING 251
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT BINDING 289
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT BINDING 291
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT BINDING 292
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
SQ SEQUENCE 355 AA; 39062 MW; 868023E96C6B763B CRC64;
MKAFLILEDG TVFQGTSIGS TREVISEIVF NTSMTGYLEV LTDPSYAGQA VTMTYPLIGN
YGICHEDMES SKAWPDGFIV RELSRTPSNF RSDDTIQDFL KEQDVPGIAG IDTRALTKIL
REKGTMNGMI TTNENYNLDE VLPKLKEYKV TGVVKKVTCK EPVHMPNTGY RVALMDFGAK
DNIANSLHKR GCDVTVYPAL TPAEEVLASN PDGIMLSNGP GDPKECVEII EELKKLYASN
VPIFAICLGH QLMALATGAD THKLKYGHRG ANHPVKDMKT GRVYISTQNH GYVVDESTLD
KDIAKPAFVN VNDGTNEGLE YIGKNIFTVQ FHPEACAGPL DTAYLFDRFI GMMAK
//
