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Database: UniProt
Entry: A0A0Q4FMI8_9SPHN
LinkDB: A0A0Q4FMI8_9SPHN
Original site: A0A0Q4FMI8_9SPHN 
ID   A0A0Q4FMI8_9SPHN        Unreviewed;       222 AA.
AC   A0A0Q4FMI8;
DT   20-JAN-2016, integrated into UniProtKB/TrEMBL.
DT   20-JAN-2016, sequence version 1.
DT   24-JAN-2024, entry version 32.
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=ASE75_13620 {ECO:0000313|EMBL:KQM63465.1};
OS   Sphingomonas sp. Leaf17.
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Sphingomonadales;
OC   Sphingomonadaceae; Sphingomonas.
OX   NCBI_TaxID=1735683 {ECO:0000313|EMBL:KQM63465.1, ECO:0000313|Proteomes:UP000051777};
RN   [1] {ECO:0000313|EMBL:KQM63465.1, ECO:0000313|Proteomes:UP000051777}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Leaf17 {ECO:0000313|EMBL:KQM63465.1,
RC   ECO:0000313|Proteomes:UP000051777};
RA   Gilbert D.G.;
RL   Submitted (OCT-2015) to the EMBL/GenBank/DDBJ databases.
RN   [2] {ECO:0000313|EMBL:KQM63465.1, ECO:0000313|Proteomes:UP000051777}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Leaf17 {ECO:0000313|EMBL:KQM63465.1,
RC   ECO:0000313|Proteomes:UP000051777};
RA   Schulze-Lefert P.;
RT   "Functional overlap of the Arabidopsis leaf and root microbiotas.";
RL   Submitted (NOV-2015) 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:KQM63465.1}.
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DR   EMBL; LMKL01000008; KQM63465.1; -; Genomic_DNA.
DR   RefSeq; WP_055934494.1; NZ_LMKL01000008.1.
DR   AlphaFoldDB; A0A0Q4FMI8; -.
DR   STRING; 1735683.ASE75_13620; -.
DR   OrthoDB; 9804441at2; -.
DR   UniPathway; UPA00074; UER00128.
DR   Proteomes; UP000051777; 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};
KW   Reference proteome {ECO:0000313|Proteomes:UP000051777}.
FT   ACT_SITE        87
FT                   /note="Nucleophile"
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"
FT   ACT_SITE        197
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00421,
FT                   ECO:0000256|PROSITE-ProRule:PRU00605"
SQ   SEQUENCE   222 AA;  23327 MW;  026BFB99BB5B642F CRC64;
     MKTAVVVFPG SNCDRDIAVA LESVTGVKPA MVWHADTELP AGTDMVAVPG GFSYGDYLRS
     GAVAARSPVM RAVIAAAERG VAVLGVCNGF QVLTEAGLLP GALMRNAGLN FVCRDVALTI
     EQTDSPFTRG YTTGQRVTFP VAHHDGNYFA DTDTLDRLEG EGRVALRYAE SVNGSARDIA
     GVLNARGNVL GLMPHPERYM EAAHGGTDGR AMFQGLLDTV AA
//
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