ID CARA_LEPIC Reviewed; 363 AA.
AC Q72PK5;
DT 01-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 24-JAN-2024, entry version 111.
DE RecName: Full=Carbamoyl phosphate synthase small chain {ECO:0000255|HAMAP-Rule:MF_01209};
DE EC=6.3.5.5 {ECO:0000255|HAMAP-Rule:MF_01209};
DE AltName: Full=Carbamoyl phosphate synthetase glutamine chain {ECO:0000255|HAMAP-Rule:MF_01209};
GN Name=carA {ECO:0000255|HAMAP-Rule:MF_01209}; OrderedLocusNames=LIC_12466;
OS Leptospira interrogans serogroup Icterohaemorrhagiae serovar copenhageni
OS (strain Fiocruz L1-130).
OC Bacteria; Spirochaetota; Spirochaetia; Leptospirales; Leptospiraceae;
OC Leptospira.
OX NCBI_TaxID=267671;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Fiocruz L1-130;
RX PubMed=15028702; DOI=10.1128/jb.186.7.2164-2172.2004;
RA Nascimento A.L.T.O., Ko A.I., Martins E.A.L., Monteiro-Vitorello C.B.,
RA Ho P.L., Haake D.A., Verjovski-Almeida S., Hartskeerl R.A., Marques M.V.,
RA Oliveira M.C., Menck C.F.M., Leite L.C.C., Carrer H., Coutinho L.L.,
RA Degrave W.M., Dellagostin O.A., El-Dorry H., Ferro E.S., Ferro M.I.T.,
RA Furlan L.R., Gamberini M., Giglioti E.A., Goes-Neto A., Goldman G.H.,
RA Goldman M.H.S., Harakava R., Jeronimo S.M.B., Junqueira-de-Azevedo I.L.M.,
RA Kimura E.T., Kuramae E.E., Lemos E.G.M., Lemos M.V.F., Marino C.L.,
RA Nunes L.R., de Oliveira R.C., Pereira G.G., Reis M.S., Schriefer A.,
RA Siqueira W.J., Sommer P., Tsai S.M., Simpson A.J.G., Ferro J.A.,
RA Camargo L.E.A., Kitajima J.P., Setubal J.C., Van Sluys M.A.;
RT "Comparative genomics of two Leptospira interrogans serovars reveals novel
RT insights into physiology and pathogenesis.";
RL J. Bacteriol. 186:2164-2172(2004).
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:0000255|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:0000255|HAMAP-
CC Rule:MF_01209};
CC -!- CATALYTIC ACTIVITY: [Carbamoyl phosphate synthase small chain]:
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:0000255|HAMAP-
CC Rule:MF_01209};
CC -!- PATHWAY: Amino-acid biosynthesis; L-arginine biosynthesis; carbamoyl
CC phosphate from bicarbonate: step 1/1. {ECO:0000255|HAMAP-
CC Rule:MF_01209}.
CC -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway;
CC (S)-dihydroorotate from bicarbonate: step 1/3. {ECO:0000255|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:0000255|HAMAP-Rule:MF_01209}.
CC -!- SIMILARITY: Belongs to the CarA family. {ECO:0000255|HAMAP-
CC Rule:MF_01209}.
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DR EMBL; AE016823; AAS71031.1; -; Genomic_DNA.
DR AlphaFoldDB; Q72PK5; -.
DR SMR; Q72PK5; -.
DR KEGG; lic:LIC_12466; -.
DR HOGENOM; CLU_035901_1_1_12; -.
DR OMA; CFNTGMT; -.
DR UniPathway; UPA00068; UER00171.
DR UniPathway; UPA00070; UER00115.
DR Proteomes; UP000007037; Chromosome I.
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-KW.
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; Arginine biosynthesis; ATP-binding;
KW Glutamine amidotransferase; Ligase; Nucleotide-binding;
KW Pyrimidine biosynthesis.
FT CHAIN 1..363
FT /note="Carbamoyl phosphate synthase small chain"
FT /id="PRO_0000112288"
FT DOMAIN 177..363
FT /note="Glutamine amidotransferase type-1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT REGION 1..173
FT /note="CPSase"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT ACT_SITE 253
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT ACT_SITE 336
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT ACT_SITE 338
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT BINDING 46
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT BINDING 225
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT BINDING 227
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT BINDING 254
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT BINDING 257
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT BINDING 295
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT BINDING 297
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
FT BINDING 298
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01209"
SQ SEQUENCE 363 AA; 40262 MW; A6172FF65E3A10FF CRC64;
MMKAFLVLDN GTIFEGESFG YETESVGEIV FNTSMAGYQE ILTDPSYCNQ IITLTYPMIG
NYGIHPDNME SSKIQASGLI VKEYVDLPSN FKSEKTLSQF LKEYKIPAIQ GIDTRKLTRF
IRTNGSPNGG IFVASEYSPS FLEKVKSFPG IINADLAEVV TTSSKYIFGT HTGKKFKLAV
YDYGVKTNIL RLLDANGFAV TVYPAKTPSE EIMKEGTDAF FLSNGPGDPA PLDYAIASTQ
KIMEKRYPLF GICLGHQIIG LSLGKKTEKM KFGHRGGNQP VKNLETGQVE ITSQNHGFAV
IDDQKQDEPI SFLNLNDHTV EGILKSGYPL LTVQYHPESA PGPNDSRYLF QKFYDLVEKT
KKG
//