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PURQ_THERP
ID   PURQ_THERP              Reviewed;         236 AA.
AC   B9KZ37;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-MAR-2009, sequence version 1.
DT   25-MAY-2022, entry version 67.
DE   RecName: Full=Phosphoribosylformylglycinamidine synthase subunit PurQ {ECO:0000255|HAMAP-Rule:MF_00421};
DE            Short=FGAM synthase {ECO:0000255|HAMAP-Rule:MF_00421};
DE            EC=6.3.5.3 {ECO:0000255|HAMAP-Rule:MF_00421};
DE   AltName: Full=Formylglycinamide ribonucleotide amidotransferase subunit I {ECO:0000255|HAMAP-Rule:MF_00421};
DE            Short=FGAR amidotransferase I {ECO:0000255|HAMAP-Rule:MF_00421};
DE            Short=FGAR-AT I {ECO:0000255|HAMAP-Rule:MF_00421};
DE   AltName: Full=Glutaminase PurQ {ECO:0000255|HAMAP-Rule:MF_00421};
DE            EC=3.5.1.2 {ECO:0000255|HAMAP-Rule:MF_00421};
DE   AltName: Full=Phosphoribosylformylglycinamidine synthase subunit I {ECO:0000255|HAMAP-Rule:MF_00421};
GN   Name=purQ {ECO:0000255|HAMAP-Rule:MF_00421}; OrderedLocusNames=trd_0748;
OS   Thermomicrobium roseum (strain ATCC 27502 / DSM 5159 / P-2).
OC   Bacteria; Chloroflexi; Thermomicrobiales; Thermomicrobiaceae;
OC   Thermomicrobium.
OX   NCBI_TaxID=309801;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27502 / DSM 5159 / P-2;
RX   PubMed=19148287; DOI=10.1371/journal.pone.0004207;
RA   Wu D., Raymond J., Wu M., Chatterji S., Ren Q., Graham J.E., Bryant D.A.,
RA   Robb F., Colman A., Tallon L.J., Badger J.H., Madupu R., Ward N.L.,
RA   Eisen J.A.;
RT   "Complete genome sequence of the aerobic CO-oxidizing thermophile
RT   Thermomicrobium roseum.";
RL   PLoS ONE 4:E4207-E4207(2009).
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:0000255|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:0000255|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:0000255|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:0000255|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:0000255|HAMAP-Rule:MF_00421}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00421}.
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DR   EMBL; CP001275; ACM05040.1; -; Genomic_DNA.
DR   RefSeq; WP_012642136.1; NC_011959.1.
DR   AlphaFoldDB; B9KZ37; -.
DR   SMR; B9KZ37; -.
DR   STRING; 309801.trd_0748; -.
DR   EnsemblBacteria; ACM05040; ACM05040; trd_0748.
DR   KEGG; tro:trd_0748; -.
DR   eggNOG; COG0047; Bacteria.
DR   HOGENOM; CLU_001031_3_1_0; -.
DR   OMA; LHFVCRD; -.
DR   OrthoDB; 1527083at2; -.
DR   UniPathway; UPA00074; UER00128.
DR   Proteomes; UP000000447; 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-KW.
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   PIRSF; PIRSF001586; FGAM_synth_I; 1.
DR   SUPFAM; SSF52317; SSF52317; 1.
DR   TIGRFAMs; TIGR01737; FGAM_synth_I; 1.
DR   PROSITE; PS51273; GATASE_TYPE_1; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Glutamine amidotransferase; Hydrolase; Ligase;
KW   Nucleotide-binding; Purine biosynthesis.
FT   CHAIN           1..236
FT                   /note="Phosphoribosylformylglycinamidine synthase subunit
FT                   PurQ"
FT                   /id="PRO_1000134916"
FT   DOMAIN          2..234
FT                   /note="Glutamine amidotransferase type-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00421"
FT   ACT_SITE        86
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00421"
FT   ACT_SITE        203
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00421"
FT   ACT_SITE        205
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00421"
SQ   SEQUENCE   236 AA;  25465 MW;  04CAEF03F089117D CRC64;
     MRFAVVTFPG SNGDHDALMA IRLGLGHAAE LVWYTETDLS RFDCIIIPGG FSYGDYLRAG
     ALARFAPVMS AVAREAEAGK PILGICNGFQ ILTEARLLPG ALLRNASLEF VCDWVWVRVE
     QTRTPWTSQL APGTLLRLPI AHGEGRYYVE AEELVALETN GQVVFRYVDA DGLPTADANP
     NGSVANIAGV CNERGNVVGL MPHPERAYDR FVGGDDGLRI LASVLSVGLE VAHSPR
 
 
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