ID A0A0J8RHV3_COCIT Unreviewed; 468 AA.
AC A0A0J8RHV3;
DT 14-OCT-2015, integrated into UniProtKB/TrEMBL.
DT 14-OCT-2015, sequence version 1.
DT 27-MAR-2024, entry version 29.
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=CIHG_02489 {ECO:0000313|EMBL:KMU84705.1};
OS Coccidioides immitis H538.4.
OC Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC Eurotiomycetidae; Onygenales; Onygenaceae; Coccidioides.
OX NCBI_TaxID=396776 {ECO:0000313|EMBL:KMU84705.1, ECO:0000313|Proteomes:UP000054563};
RN [1] {ECO:0000313|Proteomes:UP000054563}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=H538.4 {ECO:0000313|Proteomes:UP000054563};
RX PubMed=20516208; DOI=10.1101/gr.103911.109;
RA Neafsey D.E., Barker B.M., Sharpton T.J., Stajich J.E., Park D.J.,
RA Whiston E., Hung C.-Y., McMahan C., White J., Sykes S., Heiman D.,
RA Young S., Zeng Q., Abouelleil A., Aftuck L., Bessette D., Brown A.,
RA FitzGerald M., Lui A., Macdonald J.P., Priest M., Orbach M.J.,
RA Galgiani J.N., Kirkland T.N., Cole G.T., Birren B.W., Henn M.R.,
RA Taylor J.W., Rounsley S.D.;
RT "Population genomic sequencing of Coccidioides fungi reveals recent
RT hybridization and transposon control.";
RL Genome Res. 20:938-946(2010).
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}.
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DR EMBL; DS016986; KMU84705.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A0J8RHV3; -.
DR SMR; A0A0J8RHV3; -.
DR STRING; 396776.A0A0J8RHV3; -.
DR VEuPathDB; FungiDB:CIHG_02489; -.
DR eggNOG; KOG0370; Eukaryota.
DR Proteomes; UP000054563; 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:UP000054563}.
FT DOMAIN 45..184
FT /note="Carbamoyl-phosphate synthase small subunit N-
FT terminal"
FT /evidence="ECO:0000259|SMART:SM01097"
FT ACT_SITE 301
FT /note="Nucleophile"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 385
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 387
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
SQ SEQUENCE 468 AA; 50788 MW; AB825A81882BD468 CRC64;
MFSKALKSFP PRANWAMKPQ VLQARFMASV AKGTPKPNSA IFAPERATFT IRDGPVFHGK
SFGAKKNISG EAVFTTSLVG YPESLSDPSY RGQILVFTQP LIGNYGVPSA EKDENGLLKY
FESPSLQAVG VVVADVAEKY SHWTAVESLS EWCIREGVPA ISGVDTRAIV TYLREQGSSL
AKISVGEEYD ADQDEAFVDP EQINLVAKVS TKAPFHINPG NSNAHVAVID CGVKENILRS
LVHRGASITV FPYDFPIQKV AHHFDGVFIS NGPGDPTHCQ KTVHNLRKLM EVSQLPIMGI
CLGHQLLALA AGARTIKLKY GNRAHNIPAL DLTTGRCHIT SQNHGYAVDA STLPSDWKPY
FVNLNDSSNE GMIHKTRPIF STQFHPEAKG GPLDSSYLFD IYLDSVQKYK QSQAAFQPGR
DSRPSPLLAD LLGNERVGVQ TTIGTQSTPE SVAPVLETPI SPTMAAAA
//
