ID A0A2B7XB80_9EURO Unreviewed; 475 AA.
AC A0A2B7XB80;
DT 20-DEC-2017, integrated into UniProtKB/TrEMBL.
DT 20-DEC-2017, sequence version 1.
DT 27-MAR-2024, entry version 21.
DE RecName: Full=Carbamoyl phosphate synthase arginine-specific small chain {ECO:0000256|ARBA:ARBA00044168};
DE EC=6.3.5.5 {ECO:0000256|ARBA:ARBA00012738};
DE AltName: Full=Arginine-specific carbamoyl phosphate synthetase, glutamine chain {ECO:0000256|ARBA:ARBA00044340};
DE AltName: Full=Glutamine-dependent carbamoyl phosphate synthetase {ECO:0000256|ARBA:ARBA00044334};
GN ORFNames=GX51_02537 {ECO:0000313|EMBL:PGH06149.1};
OS Blastomyces parvus.
OC Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC Eurotiomycetidae; Onygenales; Ajellomycetaceae; Blastomyces.
OX NCBI_TaxID=2060905 {ECO:0000313|EMBL:PGH06149.1, ECO:0000313|Proteomes:UP000224080};
RN [1] {ECO:0000313|EMBL:PGH06149.1, ECO:0000313|Proteomes:UP000224080}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=UAMH130 {ECO:0000313|EMBL:PGH06149.1,
RC ECO:0000313|Proteomes:UP000224080};
RA Munoz J.F., Mcewen J.G., Clay O.K., Cuomo C.A.;
RT "Comparative genomics in systemic dimorphic fungi from Ajellomycetaceae.";
RL Submitted (OCT-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Small subunit of the arginine-specific carbamoyl phosphate
CC synthase (CPSase). CPSase catalyzes the formation of carbamoyl
CC phosphate from the ammonia moiety of glutamine, carbonate, and
CC phosphate donated by ATP, the first step of the arginine biosynthetic
CC pathway. The small subunit (glutamine amidotransferase) binds and
CC cleaves glutamine to supply the large subunit with the substrate
CC ammonia. {ECO:0000256|ARBA:ARBA00043861}.
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;
CC Evidence={ECO:0000256|ARBA:ARBA00001777};
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;
CC Evidence={ECO:0000256|ARBA:ARBA00043737};
CC -!- PATHWAY: Amino-acid biosynthesis; L-arginine biosynthesis; carbamoyl
CC phosphate from bicarbonate: step 1/1. {ECO:0000256|ARBA:ARBA00005077}.
CC -!- SUBUNIT: Heterodimer composed of 2 chains; the small (or glutamine)
CC chain promotes the hydrolysis of glutamine to ammonia, which is used by
CC the large (or ammonia) chain to synthesize carbamoyl phosphate.
CC {ECO:0000256|ARBA:ARBA00044031}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion matrix
CC {ECO:0000256|ARBA:ARBA00004305}.
CC -!- SIMILARITY: Belongs to the CarA family.
CC {ECO:0000256|ARBA:ARBA00007800}.
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:PGH06149.1}.
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DR EMBL; PDNC01000024; PGH06149.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2B7XB80; -.
DR STRING; 2060905.A0A2B7XB80; -.
DR OrthoDB; 2783936at2759; -.
DR Proteomes; UP000224080; Unassembled WGS sequence.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0004088; F:carbamoyl-phosphate synthase (glutamine-hydrolyzing) activity; IEA:UniProtKB-EC.
DR GO; GO:0006207; P:'de novo' pyrimidine nucleobase biosynthetic process; IEA:InterPro.
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 ATP-binding {ECO:0000256|ARBA:ARBA00022840};
KW Glutamine amidotransferase {ECO:0000256|PROSITE-ProRule:PRU00605};
KW Ligase {ECO:0000256|ARBA:ARBA00022598};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741};
KW Reference proteome {ECO:0000313|Proteomes:UP000224080}.
FT DOMAIN 52..191
FT /note="Carbamoyl-phosphate synthase small subunit N-
FT terminal"
FT /evidence="ECO:0000259|SMART:SM01097"
FT ACT_SITE 309
FT /note="Nucleophile"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 393
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 395
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
SQ SEQUENCE 475 AA; 51036 MW; 46477C71D8191DF0 CRC64;
MFARIIKSVP AGAHVTAALR APAFNARFMA TVSQTDPLTA APPKKVSPSA HDRATFMIRD
GPVFHGKSFG AKANISGEAV FTTSLVGYPE SLSDPSYRGQ ILVFTQPLIG NYGVPSAERD
ENGLLKYFES PSLQAVGVVV ADVAERYSHW TAVESLGEWC AREGVPAISG VDTREIVTYL
RERGSSLARI TIGEEYDADQ DEAFVDPEQI NLVQKVSTKA PFHVSAGNNS TAHVAVIDCG
VKENILRSLV NRGASTTVFP YDYPIHKVAH HFDGVFISNG PGDPTHCQDT VHHLRKLMET
SQVPIMGICL GHQLIALAAG ARTIKLKYGN RAHNIPALDL TTGRCHITSQ NHGYAVDATT
LPSDWKPYFI NLNDSSNEGL IHKTRPIFST QFHPEAKGGP LDSSYLFDIY LESVHKYKAT
QAVFQPQRDS RPSPLLADLL GKERVGVEAT IGVQTGAVAA DSTPAAAAAA AAAAA
//
