ID A0A5A7S6V6_9NOCA Unreviewed; 78 AA.
AC A0A5A7S6V6;
DT 13-NOV-2019, integrated into UniProtKB/TrEMBL.
DT 13-NOV-2019, sequence version 1.
DT 18-JUN-2025, entry version 21.
DE RecName: Full=Phosphoribosylformylglycinamidine synthase subunit PurS {ECO:0000256|HAMAP-Rule:MF_01926};
DE Short=FGAM synthase {ECO:0000256|HAMAP-Rule:MF_01926};
DE EC=6.3.5.3 {ECO:0000256|HAMAP-Rule:MF_01926};
DE AltName: Full=Formylglycinamide ribonucleotide amidotransferase subunit III {ECO:0000256|HAMAP-Rule:MF_01926};
DE Short=FGAR amidotransferase III {ECO:0000256|HAMAP-Rule:MF_01926};
DE Short=FGAR-AT III {ECO:0000256|HAMAP-Rule:MF_01926};
DE AltName: Full=Phosphoribosylformylglycinamidine synthase subunit III {ECO:0000256|HAMAP-Rule:MF_01926};
GN Name=purS {ECO:0000256|HAMAP-Rule:MF_01926,
GN ECO:0000313|EMBL:KAA0021888.1};
GN ORFNames=FOY51_15965 {ECO:0000313|EMBL:KAA0021888.1};
OS Antrihabitans cavernicola.
OC Bacteria; Bacillati; Actinomycetota; Actinomycetes; Mycobacteriales;
OC Nocardiaceae; Antrihabitans.
OX NCBI_TaxID=2495913 {ECO:0000313|EMBL:KAA0021888.1, ECO:0000313|Proteomes:UP000322244};
RN [1] {ECO:0000313|EMBL:KAA0021888.1, ECO:0000313|Proteomes:UP000322244}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=C1-24 {ECO:0000313|EMBL:KAA0021888.1,
RC ECO:0000313|Proteomes:UP000322244};
RA Lee S.D.;
RT "Rhodococcus cavernicolus sp. nov., isolated from a cave.";
RL Submitted (JUL-2019) 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_01926}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=N(2)-formyl-N(1)-(5-phospho-beta-D-ribosyl)glycinamide + L-
CC glutamine + ATP + H2O = 2-formamido-N(1)-(5-O-phospho-beta-D-
CC ribosyl)acetamidine + L-glutamate + ADP + phosphate + H(+);
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_01926};
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_01926}.
CC -!- SUBUNIT: Part of the FGAM synthase complex composed of 1 PurL, 1 PurQ
CC and 2 PurS subunits. {ECO:0000256|HAMAP-Rule:MF_01926}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01926}.
CC -!- SIMILARITY: Belongs to the PurS family. {ECO:0000256|HAMAP-
CC Rule:MF_01926}.
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:KAA0021888.1}.
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DR EMBL; VLNY01000007; KAA0021888.1; -; Genomic_DNA.
DR RefSeq; WP_149431251.1; NZ_VLNY01000007.1.
DR AlphaFoldDB; A0A5A7S6V6; -.
DR OrthoDB; 3479567at2; -.
DR UniPathway; UPA00074; UER00128.
DR Proteomes; UP000322244; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
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 Gene3D; 3.30.1280.10; Phosphoribosylformylglycinamidine synthase subunit PurS; 1.
DR HAMAP; MF_01926; PurS; 1.
DR InterPro; IPR003850; PurS.
DR InterPro; IPR036604; PurS-like_sf.
DR NCBIfam; TIGR00302; phosphoribosylformylglycinamidine synthase subunit PurS; 1.
DR NCBIfam; NF004630; PRK05974.1; 1.
DR PANTHER; PTHR34696; PHOSPHORIBOSYLFORMYLGLYCINAMIDINE SYNTHASE SUBUNIT PURS; 1.
DR PANTHER; PTHR34696:SF1; PHOSPHORIBOSYLFORMYLGLYCINAMIDINE SYNTHASE SUBUNIT PURS; 1.
DR Pfam; PF02700; PurS; 1.
DR SUPFAM; SSF82697; PurS-like; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01926};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_01926};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_01926};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01926};
KW Purine biosynthesis {ECO:0000256|ARBA:ARBA00022755, ECO:0000256|HAMAP-
KW Rule:MF_01926}; Reference proteome {ECO:0000313|Proteomes:UP000322244}.
SQ SEQUENCE 78 AA; 8562 MW; AB3EBCFFAF018B87 CRC64;
MARVVVDVMP KAEILDPQGQ AIVGALPRLG FNGVSDVRQG KRFELEVGDD VDDDELAKIA
ESLLANTVIE DWKVTRLQ
//
