PURQ_LEIXX
ID PURQ_LEIXX Reviewed; 232 AA.
AC Q6ACD4;
DT 02-AUG-2005, integrated into UniProtKB/Swiss-Prot.
DT 13-SEP-2004, sequence version 1.
DT 25-MAY-2022, entry version 108.
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=Lxx22970;
OS Leifsonia xyli subsp. xyli (strain CTCB07).
OC Bacteria; Actinobacteria; Micrococcales; Microbacteriaceae; Leifsonia.
OX NCBI_TaxID=281090;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CTCB07;
RX PubMed=15305603; DOI=10.1094/mpmi.2004.17.8.827;
RA Monteiro-Vitorello C.B., Camargo L.E.A., Van Sluys M.A., Kitajima J.P.,
RA Truffi D., do Amaral A.M., Harakava R., de Oliveira J.C.F., Wood D.,
RA de Oliveira M.C., Miyaki C.Y., Takita M.A., da Silva A.C.R., Furlan L.R.,
RA Carraro D.M., Camarotte G., Almeida N.F. Jr., Carrer H., Coutinho L.L.,
RA El-Dorry H.A., Ferro M.I.T., Gagliardi P.R., Giglioti E., Goldman M.H.S.,
RA Goldman G.H., Kimura E.T., Ferro E.S., Kuramae E.E., Lemos E.G.M.,
RA Lemos M.V.F., Mauro S.M.Z., Machado M.A., Marino C.L., Menck C.F.,
RA Nunes L.R., Oliveira R.C., Pereira G.G., Siqueira W., de Souza A.A.,
RA Tsai S.M., Zanca A.S., Simpson A.J.G., Brumbley S.M., Setubal J.C.;
RT "The genome sequence of the Gram-positive sugarcane pathogen Leifsonia xyli
RT subsp. xyli.";
RL Mol. Plant Microbe Interact. 17:827-836(2004).
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; AE016822; AAT89959.1; -; Genomic_DNA.
DR RefSeq; WP_011186938.1; NC_006087.1.
DR AlphaFoldDB; Q6ACD4; -.
DR SMR; Q6ACD4; -.
DR STRING; 281090.Lxx22970; -.
DR EnsemblBacteria; AAT89959; AAT89959; Lxx22970.
DR KEGG; lxx:Lxx22970; -.
DR eggNOG; COG0047; Bacteria.
DR HOGENOM; CLU_001031_3_1_11; -.
DR OMA; LHFVCRD; -.
DR OrthoDB; 1527083at2; -.
DR UniPathway; UPA00074; UER00128.
DR Proteomes; UP000001306; 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; Reference proteome.
FT CHAIN 1..232
FT /note="Phosphoribosylformylglycinamidine synthase subunit
FT PurQ"
FT /id="PRO_0000100563"
FT DOMAIN 2..232
FT /note="Glutamine amidotransferase type-1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00421"
FT ACT_SITE 85
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00421"
FT ACT_SITE 194
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00421"
FT ACT_SITE 196
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00421"
SQ SEQUENCE 232 AA; 24664 MW; CC23DB47BC9EF916 CRC64;
MRIGVITFPG SLDDRDALRA IRLAGAEPVA LWHGDHDLQG VDALVLPGGF SYGDYLRCGA
IASLSPIMSE VVEAAGKGMP VLGICNGFQM LAEAILVPGG LIRNDHGNFI CHAQRLTVEN
AETPWTGGFE RGQKIVIPLK NGEGSFIASA EELKRLEGEG MVVFRYRGVN PNGSLNDIAG
VRNERGNVVG LMPHPEHAVE PGFGPDTDQA MRSGTDGLAF FTSVVRSTLV EA
