ID F8E8H7_FLESM Unreviewed; 231 AA.
AC F8E8H7;
DT 21-SEP-2011, integrated into UniProtKB/TrEMBL.
DT 21-SEP-2011, sequence version 1.
DT 27-MAR-2024, entry version 68.
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 OrderedLocusNames=Flexsi_0336 {ECO:0000313|EMBL:AEI14026.1};
OS Flexistipes sinusarabici (strain ATCC 49648 / DSM 4947 / MAS 10).
OC Bacteria; Deferribacterota; Deferribacteres; Deferribacterales;
OC Flexistipitaceae; Flexistipes.
OX NCBI_TaxID=717231 {ECO:0000313|EMBL:AEI14026.1, ECO:0000313|Proteomes:UP000006621};
RN [1] {ECO:0000313|EMBL:AEI14026.1, ECO:0000313|Proteomes:UP000006621}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 4947 / MAS 10 {ECO:0000313|Proteomes:UP000006621};
RX PubMed=22180813; DOI=10.4056/sigs.2235024;
RA Lapidus A., Chertkov O., Nolan M., Lucas S., Hammon N., Deshpande S.,
RA Cheng J.F., Tapia R., Han C., Goodwin L., Pitluck S., Liolios K.,
RA Pagani I., Ivanova N., Huntemann M., Mavromatis K., Mikhailova N., Pati A.,
RA Chen A., Palaniappan K., Land M., Hauser L., Brambilla E.M., Rohde M.,
RA Abt B., Spring S., Goker M., Bristow J., Eisen J.A., Markowitz V.,
RA Hugenholtz P., Kyrpides N.C., Klenk H.P., Woyke T.;
RT "Genome sequence of the moderately thermophilic halophile Flexistipes
RT sinusarabici strain (MAS10).";
RL Stand. Genomic Sci. 5:86-96(2011).
RN [2] {ECO:0000313|Proteomes:UP000006621}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 4947 / MAS 10 {ECO:0000313|Proteomes:UP000006621};
RA Lucas S., Han J., Lapidus A., Bruce D., Goodwin L., Pitluck S., Peters L.,
RA Kyrpides N., Mavromatis K., Ivanova N., Mikhailova N., Chertkov O.,
RA Detter J.C., Tapia R., Han C., Land M., Hauser L., Markowitz V.,
RA Cheng J.-F., Hugenholtz P., Woyke T., Wu D., Spring S., Schroeder M.,
RA Brambilla E., Klenk H.-P., Eisen J.A.;
RT "The complete genome of Flexistipes sinusarabici DSM 4947.";
RL Submitted (JUN-2011) 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; CP002858; AEI14026.1; -; Genomic_DNA.
DR RefSeq; WP_013885537.1; NC_015672.1.
DR AlphaFoldDB; F8E8H7; -.
DR STRING; 717231.Flexsi_0336; -.
DR KEGG; fsi:Flexsi_0336; -.
DR eggNOG; COG0047; Bacteria.
DR HOGENOM; CLU_001031_3_1_0; -.
DR OrthoDB; 9804441at2; -.
DR UniPathway; UPA00074; UER00128.
DR Proteomes; UP000006621; 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:UP000006621}.
FT ACT_SITE 86
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00421,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 203
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00421,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 205
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00421,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
SQ SEQUENCE 231 AA; 25265 MW; 9A7AB1445CBACA1E CRC64;
MKAGVVVFPG SNCDHDCYYA LNSILGINTE YIWHKEGSVK GFDLLVLPGG FSYGDYLRCG
AIAKHSPVVD AVVDFAEKGG HVLGICNGFQ VLTESGLLPG ALIRNKNLKF ICEYVSVIVE
NAKTGFTSYY NDGEILNIPI AHMDGNYYID EKGLNDLLEN EQVVFRYCDA DGGISEEDNP
NGSVYNIAGV INKKGNIMGM MPHPERCCEP LLGGNHGYYL FESIKNFLKG A
//
