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Database: UniProt
Entry: A0A0C1YEA0_9CYAN
LinkDB: A0A0C1YEA0_9CYAN
Original site: A0A0C1YEA0_9CYAN 
ID   A0A0C1YEA0_9CYAN        Unreviewed;       232 AA.
AC   A0A0C1YEA0;
DT   01-APR-2015, integrated into UniProtKB/TrEMBL.
DT   01-APR-2015, sequence version 1.
DT   24-JAN-2024, entry version 40.
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:NEV66784.1};
GN   ORFNames=QQ91_006605 {ECO:0000313|EMBL:NEV66784.1};
OS   Lyngbya confervoides BDU141951.
OC   Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC   Oscillatoriales; Oscillatoriaceae; Lyngbya.
OX   NCBI_TaxID=1574623 {ECO:0000313|EMBL:NEV66784.1, ECO:0000313|Proteomes:UP000031561};
RN   [1] {ECO:0000313|EMBL:NEV66784.1}
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=BDU141951 {ECO:0000313|EMBL:NEV66784.1};
RA   Malar M.C., Sen D., Tripathy S.;
RL   Submitted (NOV-2014) to the EMBL/GenBank/DDBJ databases.
RN   [2] {ECO:0000313|EMBL:NEV66784.1}
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=BDU141951 {ECO:0000313|EMBL:NEV66784.1};
RX   PubMed=25745003;
RA   Chandrababunaidu M.M., Sen D., Tripathy S.;
RT   "Draft Genome Sequence of Filamentous Marine Cyanobacterium Lyngbya
RT   confervoides Strain BDU141951.";
RL   Genome Announc. 3:e00066-e00015(2015).
RN   [3] {ECO:0000313|EMBL:NEV66784.1}
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=BDU141951 {ECO:0000313|EMBL:NEV66784.1};
RA   Sarangi A.N., Ghosh S., Mukherjee M., Tripathy S.;
RL   Submitted (FEB-2020) 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}.
CC   -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC       whole genome shotgun (WGS) entry which is preliminary data.
CC       {ECO:0000313|EMBL:NEV66784.1}.
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DR   EMBL; JTHE02000003; NEV66784.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A0C1YEA0; -.
DR   UniPathway; UPA00074; UER00128.
DR   Proteomes; UP000031561; Unassembled WGS sequence.
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|HAMAP-Rule:MF_00421};
KW   Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00421};
KW   Glutamine amidotransferase {ECO:0000256|HAMAP-Rule:MF_00421,
KW   ECO:0000256|PROSITE-ProRule:PRU00605};
KW   Hydrolase {ECO:0000256|HAMAP-Rule:MF_00421};
KW   Ligase {ECO:0000256|HAMAP-Rule:MF_00421};
KW   Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_00421};
KW   Purine biosynthesis {ECO:0000256|HAMAP-Rule:MF_00421}.
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   232 AA;  25143 MW;  09EFCB30909FD1D5 CRC64;
     MNVSVIVFPG ANCDRDAAYV TRDLLGQPTQ MIWHEDRDLQ QADVVIVPGG FSYGDYLRCG
     AIARFSPALQ ATVEHAQRGG LVIGICNGFQ ILTEAGLLPG ALMRNRDLHF ICDRVPLRVE
     RTDLVWTQNY ADQAVITVPI AHGEGCYYAD ADTLQALEDN GQVVFRYCDV TGDPTPASNP
     NGSLNNIAGI CNQQGNVLGM MPHPERVSDP LLGGTDGLAL FESVLSKQLQ TI
//
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