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Database: UniProt
Entry: B1XXG8_LEPCP
LinkDB: B1XXG8_LEPCP
Original site: B1XXG8_LEPCP 
ID   B1XXG8_LEPCP            Unreviewed;       394 AA.
AC   B1XXG8;
DT   20-MAY-2008, integrated into UniProtKB/TrEMBL.
DT   20-MAY-2008, sequence version 1.
DT   24-JAN-2024, entry version 89.
DE   RecName: Full=Carbamoyl-phosphate synthase small chain {ECO:0000256|ARBA:ARBA00019036, ECO:0000256|HAMAP-Rule:MF_01209};
DE            EC=6.3.5.5 {ECO:0000256|ARBA:ARBA00012738, ECO:0000256|HAMAP-Rule:MF_01209};
DE   AltName: Full=Carbamoyl-phosphate synthetase glutamine chain {ECO:0000256|ARBA:ARBA00030197, ECO:0000256|HAMAP-Rule:MF_01209};
GN   Name=carA {ECO:0000256|HAMAP-Rule:MF_01209};
GN   OrderedLocusNames=Lcho_2823 {ECO:0000313|EMBL:ACB35088.1};
OS   Leptothrix cholodnii (strain ATCC 51168 / LMG 8142 / SP-6) (Leptothrix
OS   discophora (strain SP-6)).
OC   Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC   Sphaerotilaceae; Leptothrix.
OX   NCBI_TaxID=395495 {ECO:0000313|EMBL:ACB35088.1, ECO:0000313|Proteomes:UP000001693};
RN   [1] {ECO:0000313|EMBL:ACB35088.1, ECO:0000313|Proteomes:UP000001693}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51168 / LMG 8142 / SP-6
RC   {ECO:0000313|Proteomes:UP000001693};
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Chertkov O., Brettin T., Detter J.C.,
RA   Han C., Kuske C.R., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Lykidis A., Emerson D., Richardson P.;
RT   "Complete sequence of Leptothrix cholodnii SP-6.";
RL   Submitted (MAR-2008) to the EMBL/GenBank/DDBJ databases.
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, 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.
CC       {ECO:0000256|ARBA:ARBA00004812, ECO:0000256|HAMAP-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.
CC       {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; CP001013; ACB35088.1; -; Genomic_DNA.
DR   RefSeq; WP_012347842.1; NC_010524.1.
DR   AlphaFoldDB; B1XXG8; -.
DR   STRING; 395495.Lcho_2823; -.
DR   KEGG; lch:Lcho_2823; -.
DR   eggNOG; COG0505; Bacteria.
DR   HOGENOM; CLU_035901_2_1_4; -.
DR   OMA; CFNTGMT; -.
DR   OrthoDB; 9804328at2; -.
DR   UniPathway; UPA00068; UER00171.
DR   UniPathway; UPA00070; UER00115.
DR   Proteomes; UP000001693; Chromosome.
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:UP000001693}.
FT   DOMAIN          6..136
FT                   /note="Carbamoyl-phosphate synthase small subunit N-
FT                   terminal"
FT                   /evidence="ECO:0000259|SMART:SM01097"
FT   REGION          1..203
FT                   /note="CPSase"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01209"
FT   ACT_SITE        280
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT                   ECO:0000256|PROSITE-ProRule:PRU00605"
FT   ACT_SITE        364
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT                   ECO:0000256|PROSITE-ProRule:PRU00605"
FT   ACT_SITE        366
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01209,
FT                   ECO:0000256|PROSITE-ProRule:PRU00605"
SQ   SEQUENCE   394 AA;  42286 MW;  E17959EBB139D6BD CRC64;
     MLPVLPPAIL ALADGTVFQG VSIGAAGHTV GEVVFNTALT GYQEILTDPS YCRQIVTLTY
     PHIGNYGVNE QDVEARKVHA AGLIIKDLPI RSSNFRQSLT LSQYLVREGT VAIADLDTRR
     LTRILRTHGA QNGCIVAFAA DTVVTQAMRD EAVALARKAP SMAGLDLAQV VTTDVSYPWT
     ETEWQLLGAD GTPGFGDQTA PRFHVVAYDF GVKRNILRML AERGCKVTVV PARTPAAEAL
     ALKPDGIFLS NGPGDPQPCD YAIEAAAELI ETGIPTFGIC LGHQIMALAS GAKTFKMKFG
     HHGANHPVKD LDTGRVSITS QNHGFAVDAE SLPANLRTTH VSLFDGTLQG LARTDKPAFC
     FQGHPEASPG PHDIAYLFDR FTKLMSDQAE KKNA
//
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