ID B0SSD6_LEPBP Unreviewed; 215 AA.
AC B0SSD6;
DT 08-APR-2008, integrated into UniProtKB/TrEMBL.
DT 08-APR-2008, sequence version 1.
DT 27-MAR-2024, entry version 102.
DE RecName: Full=Phosphoribosylformylglycinamidine synthase subunit PurQ {ECO:0000256|HAMAP-Rule:MF_00421};
DE Short=FGAM synthase {ECO:0000256|HAMAP-Rule:MF_00421};
DE EC=6.3.5.3 {ECO:0000256|HAMAP-Rule:MF_00421};
DE AltName: Full=Formylglycinamide ribonucleotide amidotransferase subunit I {ECO:0000256|HAMAP-Rule:MF_00421};
DE Short=FGAR amidotransferase I {ECO:0000256|HAMAP-Rule:MF_00421};
DE Short=FGAR-AT I {ECO:0000256|HAMAP-Rule:MF_00421};
DE AltName: Full=Glutaminase PurQ {ECO:0000256|HAMAP-Rule:MF_00421};
DE EC=3.5.1.2 {ECO:0000256|HAMAP-Rule:MF_00421};
DE AltName: Full=Phosphoribosylformylglycinamidine synthase subunit I {ECO:0000256|HAMAP-Rule:MF_00421};
GN Name=purQ {ECO:0000256|HAMAP-Rule:MF_00421,
GN ECO:0000313|EMBL:ABZ98026.1};
GN OrderedLocusNames=LEPBI_I1923 {ECO:0000313|EMBL:ABZ98026.1};
OS Leptospira biflexa serovar Patoc (strain Patoc 1 / ATCC 23582 / Paris).
OC Bacteria; Spirochaetota; Spirochaetia; Leptospirales; Leptospiraceae;
OC Leptospira.
OX NCBI_TaxID=456481 {ECO:0000313|EMBL:ABZ98026.1, ECO:0000313|Proteomes:UP000001847};
RN [1] {ECO:0000313|EMBL:ABZ98026.1, ECO:0000313|Proteomes:UP000001847}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Patoc 1 / ATCC 23582 / Paris
RC {ECO:0000313|Proteomes:UP000001847};
RX PubMed=18270594; DOI=10.1371/journal.pone.0001607;
RA Picardeau M., Bulach D.M., Bouchier C., Zuerner R.L., Zidane N.,
RA Wilson P.J., Creno S., Kuczek E.S., Bommezzadri S., Davis J.C., McGrath A.,
RA Johnson M.J., Boursaux-Eude C., Seemann T., Rouy Z., Coppel R.L.,
RA Rood J.I., Lajus A., Davies J.K., Medigue C., Adler B.;
RT "Genome sequence of the saprophyte Leptospira biflexa provides insights
RT into the evolution of Leptospira and the pathogenesis of leptospirosis.";
RL PLoS ONE 3:E1607-E1607(2008).
CC -!- FUNCTION: Part of the phosphoribosylformylglycinamidine synthase
CC complex involved in the purines biosynthetic pathway. Catalyzes the
CC ATP-dependent conversion of formylglycinamide ribonucleotide (FGAR) and
CC glutamine to yield formylglycinamidine ribonucleotide (FGAM) and
CC glutamate. The FGAM synthase complex is composed of three subunits.
CC PurQ produces an ammonia molecule by converting glutamine to glutamate.
CC PurL transfers the ammonia molecule to FGAR to form FGAM in an ATP-
CC dependent manner. PurS interacts with PurQ and PurL and is thought to
CC assist in the transfer of the ammonia molecule from PurQ to PurL.
CC {ECO:0000256|HAMAP-Rule:MF_00421}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + H2O + L-glutamine + N(2)-formyl-N(1)-(5-phospho-beta-D-
CC ribosyl)glycinamide = 2-formamido-N(1)-(5-O-phospho-beta-D-
CC ribosyl)acetamidine + ADP + H(+) + L-glutamate + phosphate;
CC Xref=Rhea:RHEA:17129, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29985, ChEBI:CHEBI:30616, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:58359, ChEBI:CHEBI:147286, ChEBI:CHEBI:147287,
CC ChEBI:CHEBI:456216; EC=6.3.5.3; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_00421};
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; EC=3.5.1.2;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00421};
CC -!- PATHWAY: Purine metabolism; IMP biosynthesis via de novo pathway; 5-
CC amino-1-(5-phospho-D-ribosyl)imidazole from N(2)-formyl-N(1)-(5-
CC phospho-D-ribosyl)glycinamide: step 1/2. {ECO:0000256|HAMAP-
CC Rule:MF_00421}.
CC -!- SUBUNIT: Part of the FGAM synthase complex composed of 1 PurL, 1 PurQ
CC and 2 PurS subunits. {ECO:0000256|HAMAP-Rule:MF_00421}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00421}.
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DR EMBL; CP000786; ABZ98026.1; -; Genomic_DNA.
DR RefSeq; WP_012388904.1; NC_010602.1.
DR AlphaFoldDB; B0SSD6; -.
DR STRING; 456481.LEPBI_I1923; -.
DR KEGG; lbi:LEPBI_I1923; -.
DR HOGENOM; CLU_001031_3_1_12; -.
DR OrthoDB; 9804441at2; -.
DR BioCyc; LBIF456481:LEPBI_RS09495-MONOMER; -.
DR UniPathway; UPA00074; UER00128.
DR Proteomes; UP000001847; Chromosome I.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0004359; F:glutaminase activity; IEA:UniProtKB-EC.
DR GO; GO:0004642; F:phosphoribosylformylglycinamidine synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006189; P:'de novo' IMP biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0006541; P:glutamine metabolic process; IEA:UniProtKB-UniRule.
DR CDD; cd01740; GATase1_FGAR_AT; 1.
DR Gene3D; 3.40.50.880; -; 1.
DR HAMAP; MF_00421; PurQ; 1.
DR InterPro; IPR029062; Class_I_gatase-like.
DR InterPro; IPR010075; PRibForGlyAmidine_synth_PurQ.
DR NCBIfam; TIGR01737; FGAM_synth_I; 1.
DR PANTHER; PTHR47552; PHOSPHORIBOSYLFORMYLGLYCINAMIDINE SYNTHASE SUBUNIT PURQ; 1.
DR PANTHER; PTHR47552:SF1; PHOSPHORIBOSYLFORMYLGLYCINAMIDINE SYNTHASE SUBUNIT PURQ; 1.
DR Pfam; PF13507; GATase_5; 1.
DR PIRSF; PIRSF001586; FGAM_synth_I; 1.
DR SMART; SM01211; GATase_5; 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, ECO:0000256|HAMAP-
KW Rule:MF_00421};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00421};
KW Glutamine amidotransferase {ECO:0000256|ARBA:ARBA00022962,
KW ECO:0000256|HAMAP-Rule:MF_00421};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_00421};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_00421};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_00421};
KW Purine biosynthesis {ECO:0000256|ARBA:ARBA00022755, ECO:0000256|HAMAP-
KW Rule:MF_00421}; Reference proteome {ECO:0000313|Proteomes:UP000001847}.
FT ACT_SITE 86
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00421,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 191
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00421,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 193
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00421,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
SQ SEQUENCE 215 AA; 23714 MW; 02628D81CC37193A CRC64;
MKVRVVTFPG SNCDKDVGSV LQESFQAEVI YTWYKESFED VPDLVVLPGG FSFGDYLRCG
AMAKFSPSME SVVKYANKGG KVLGVCNGFQ ILTESGLLPG ALLHNRTLKY ICKDVELVPV
KENSFAKKME GTLSIPIAHG EGAYFADPET LERLEKNGQV VFRYRENPNG SLHDIAGICN
ERGNVLGMMP HPERAMNPYT GKMDGKQILE ALLKN
//
