ID C9A5H2_ENTCA Unreviewed; 225 AA.
AC C9A5H2;
DT 03-NOV-2009, integrated into UniProtKB/TrEMBL.
DT 03-NOV-2009, sequence version 1.
DT 27-MAR-2024, entry version 73.
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 ORFNames=ECBG_02145 {ECO:0000313|EMBL:EEV39876.1};
OS Enterococcus casseliflavus EC20.
OC Bacteria; Bacillota; Bacilli; Lactobacillales; Enterococcaceae;
OC Enterococcus.
OX NCBI_TaxID=565655 {ECO:0000313|EMBL:EEV39876.1, ECO:0000313|Proteomes:UP000012675};
RN [1] {ECO:0000313|EMBL:EEV39876.1, ECO:0000313|Proteomes:UP000012675}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=EC20 {ECO:0000313|EMBL:EEV39876.1,
RC ECO:0000313|Proteomes:UP000012675};
RG The Broad Institute Genome Sequencing Platform;
RA Feldgarden M., Young S.K., Kodira C.D., Zeng Q., Koehrsen M., Alvarado L.,
RA Berlin A., Borenstein D., Chen Z., Engels R., Freedman E., Gellesch M.,
RA Goldberg J., Griggs A., Gujja S., Heiman D., Hepburn T., Howarth C.,
RA Jen D., Larson L., Lewis B., Mehta T., Park D., Pearson M., Roberts A.,
RA Saif S., Shea T., Shenoy N., Sisk P., Stolte C., Sykes S., Walk T.,
RA White J., Yandava C., Gilmore M., Manson J., Palmer K., Carniol K.,
RA Lander E., Nusbaum C., Galagan J., Birren B.;
RL Submitted (FEB-2009) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EEV39876.1, ECO:0000313|Proteomes:UP000012675}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=EC20 {ECO:0000313|EMBL:EEV39876.1,
RC ECO:0000313|Proteomes:UP000012675};
RG The Broad Institute Genomics Platform;
RG The Broad Institute Genome Sequencing Center for Infectious Disease;
RA Russ C., Feldgarden M., Gilmore M., Manson J., Palmer K., Carniol K.,
RA Walker B., Young S.K., Zeng Q., Gargeya S., Fitzgerald M., Haas B.,
RA Abouelleil A., Allen A.W., Alvarado L., Arachchi H.M., Berlin A.M.,
RA Chapman S.B., Gainer-Dewar J., Goldberg J., Griggs A., Gujja S., Hansen M.,
RA Howarth C., Imamovic A., Ireland A., Larimer J., McCowan C., Murphy C.,
RA Pearson M., Poon T.W., Priest M., Roberts A., Saif S., Shea T., Sisk P.,
RA Sykes S., Wortman J., Nusbaum C., Birren B.;
RT "The Genome Sequence of Enterococcus casseliflavus EC20 (899205).";
RL Submitted (MAR-2013) to the EMBL/GenBank/DDBJ databases.
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; CP004856; EEV39876.1; -; Genomic_DNA.
DR RefSeq; WP_010749588.1; NZ_AKCC01000001.1.
DR AlphaFoldDB; C9A5H2; -.
DR GeneID; 15142440; -.
DR KEGG; ecas:ECBG_02145; -.
DR eggNOG; COG0047; Bacteria.
DR HOGENOM; CLU_001031_3_1_9; -.
DR UniPathway; UPA00074; UER00128.
DR Proteomes; UP000012675; Chromosome.
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:UP000012675}.
FT ACT_SITE 86
FT /note="Nucleophile"
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"
FT ACT_SITE 195
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00421,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
SQ SEQUENCE 225 AA; 24642 MW; 31374DB2232AB4FB CRC64;
MKFAVIVFPG SNCDVDLMWA IKDIMGAEAE YVRHDADSLA GFDGVLLPGG FSYGDYLRCG
AIARFSTIMS EVIRLANEGK PVFGTCNGFQ ILTEAGLLPG VLQRNESLHF ICKPVRLQVN
NQTAFTSEYE TDQVITLPVA HGEGNYYCDE TTYQELVANN QIVFRYEDNV NGSLHNIAGI
CNKAGNVLGM MPHPERAMES LLGSEDGKKF FASLLKNFGK VPVNG
//
