ID A0A4U0ZMT7_9BACT Unreviewed; 374 AA. AC A0A4U0ZMT7; DT 31-JUL-2019, integrated into UniProtKB/TrEMBL. DT 31-JUL-2019, sequence version 1. DT 27-MAR-2024, entry version 19. 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 ECO:0000313|EMBL:TKB06527.1}; GN ORFNames=FCL48_20570 {ECO:0000313|EMBL:TKB06527.1}; OS Desulforhopalus sp. IMCC35007. OC Bacteria; Thermodesulfobacteriota; Desulfobulbia; Desulfobulbales; OC Desulfocapsaceae; Desulforhopalus. OX NCBI_TaxID=2569543 {ECO:0000313|EMBL:TKB06527.1, ECO:0000313|Proteomes:UP000308209}; RN [1] {ECO:0000313|EMBL:TKB06527.1, ECO:0000313|Proteomes:UP000308209} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=IMCC35007 {ECO:0000313|EMBL:TKB06527.1, RC ECO:0000313|Proteomes:UP000308209}; RA Hwang J.C.; RL Submitted (APR-2019) 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}. CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ CC whole genome shotgun (WGS) entry which is preliminary data. CC {ECO:0000313|EMBL:TKB06527.1}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; SWCN01000025; TKB06527.1; -; Genomic_DNA. DR AlphaFoldDB; A0A4U0ZMT7; -. DR OrthoDB; 9804328at2; -. DR UniPathway; UPA00068; UER00171. DR UniPathway; UPA00070; UER00115. DR Proteomes; UP000308209; 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; 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|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:UP000308209}. FT DOMAIN 1..131 FT /note="Carbamoyl-phosphate synthase small subunit N- FT terminal" FT /evidence="ECO:0000259|SMART:SM01097" FT REGION 1..189 FT /note="CPSase" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209" FT ACT_SITE 265 FT /note="Nucleophile" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209, FT ECO:0000256|PROSITE-ProRule:PRU00605" FT ACT_SITE 350 FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209, FT ECO:0000256|PROSITE-ProRule:PRU00605" FT ACT_SITE 352 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 238 FT /ligand="L-glutamine" FT /ligand_id="ChEBI:CHEBI:58359" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209" FT BINDING 240 FT /ligand="L-glutamine" FT /ligand_id="ChEBI:CHEBI:58359" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209" FT BINDING 266 FT /ligand="L-glutamine" FT /ligand_id="ChEBI:CHEBI:58359" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209" FT BINDING 269 FT /ligand="L-glutamine" FT /ligand_id="ChEBI:CHEBI:58359" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209" FT BINDING 307 FT /ligand="L-glutamine" FT /ligand_id="ChEBI:CHEBI:58359" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209" FT BINDING 309 FT /ligand="L-glutamine" FT /ligand_id="ChEBI:CHEBI:58359" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209" FT BINDING 310 FT /ligand="L-glutamine" FT /ligand_id="ChEBI:CHEBI:58359" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01209" SQ SEQUENCE 374 AA; 41024 MW; 28E8972D1E719476 CRC64; MKAIIALEDG TTFEGHSFTG HGEAVGEIVF NTSLSGYQEI LTDPSYTGQI VTMTYPLIGN YGTNPEDMES AAAHPKAFLI KEYNSYPSNY RSTKPLAEFL QEYGILGVEG FDTRALVRHI RTKGAMKGIV STRDLDKEAL VKKAQEWSGL VGQDMVKKVT CTSPYGWGEN EPVAGSNFET AKKPGEKAFK VVAFDFGIKY NQLRLLQKKG CQVQVVPART DAKTVLAMEP DGIFLSNGPG DPEGVEGVVD TIRELLGKKP IFGICLGHQM LGLAYGGSAY KLKFGHRGGN QPVKDLTTGH VEITSQNHGF CIDESTLPAG EVEVTHINLN DNSLEGMRHK KYPAFSVQYH PEHAPGPHDA EYLFDRFIDM MRAV //