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Database: UniProt
Entry: PURL_CHLCH
LinkDB: PURL_CHLCH
Original site: PURL_CHLCH 
ID   PURL_CHLCH              Reviewed;         761 AA.
AC   Q3ARU4;
DT   30-MAY-2006, integrated into UniProtKB/Swiss-Prot.
DT   22-NOV-2005, sequence version 1.
DT   27-MAR-2024, entry version 103.
DE   RecName: Full=Phosphoribosylformylglycinamidine synthase subunit PurL {ECO:0000255|HAMAP-Rule:MF_00420};
DE            Short=FGAM synthase {ECO:0000255|HAMAP-Rule:MF_00420};
DE            EC=6.3.5.3 {ECO:0000255|HAMAP-Rule:MF_00420};
DE   AltName: Full=Formylglycinamide ribonucleotide amidotransferase subunit II {ECO:0000255|HAMAP-Rule:MF_00420};
DE            Short=FGAR amidotransferase II {ECO:0000255|HAMAP-Rule:MF_00420};
DE            Short=FGAR-AT II {ECO:0000255|HAMAP-Rule:MF_00420};
DE   AltName: Full=Glutamine amidotransferase PurL {ECO:0000255|HAMAP-Rule:MF_00420};
DE   AltName: Full=Phosphoribosylformylglycinamidine synthase subunit II {ECO:0000255|HAMAP-Rule:MF_00420};
GN   Name=purL {ECO:0000255|HAMAP-Rule:MF_00420}; OrderedLocusNames=Cag_1019;
OS   Chlorobium chlorochromatii (strain CaD3).
OC   Bacteria; Chlorobiota; Chlorobiia; Chlorobiales; Chlorobiaceae;
OC   Chlorobium/Pelodictyon group; Chlorobium.
OX   NCBI_TaxID=340177;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CaD3;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Bryant D., Schmutz J., Larimer F.,
RA   Land M., Kyrpides N., Ivanova N., Richardson P.;
RT   "Complete sequence of Chlorobium chlorochromatii CaD3.";
RL   Submitted (AUG-2005) 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:0000255|HAMAP-Rule:MF_00420}.
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_00420};
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_00420}.
CC   -!- SUBUNIT: Monomer. Part of the FGAM synthase complex composed of 1 PurL,
CC       1 PurQ and 2 PurS subunits. {ECO:0000255|HAMAP-Rule:MF_00420}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00420}.
CC   -!- SIMILARITY: Belongs to the FGAMS family. {ECO:0000255|HAMAP-
CC       Rule:MF_00420}.
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DR   EMBL; CP000108; ABB28281.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q3ARU4; -.
DR   SMR; Q3ARU4; -.
DR   STRING; 340177.Cag_1019; -.
DR   KEGG; cch:Cag_1019; -.
DR   eggNOG; COG0046; Bacteria.
DR   HOGENOM; CLU_003100_0_1_10; -.
DR   OrthoDB; 9804441at2; -.
DR   UniPathway; UPA00074; UER00128.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion 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   CDD; cd02203; PurL_repeat1; 1.
DR   CDD; cd02204; PurL_repeat2; 1.
DR   Gene3D; 3.90.650.10; PurM-like C-terminal domain; 2.
DR   Gene3D; 3.30.1330.10; PurM-like, N-terminal domain; 2.
DR   HAMAP; MF_00420; PurL_2; 1.
DR   InterPro; IPR010074; PRibForGlyAmidine_synth_PurL.
DR   InterPro; IPR041609; PurL_linker.
DR   InterPro; IPR010918; PurM-like_C_dom.
DR   InterPro; IPR036676; PurM-like_C_sf.
DR   InterPro; IPR016188; PurM-like_N.
DR   InterPro; IPR036921; PurM-like_N_sf.
DR   NCBIfam; TIGR01736; FGAM_synth_II; 1.
DR   PANTHER; PTHR43555; PHOSPHORIBOSYLFORMYLGLYCINAMIDINE SYNTHASE SUBUNIT PURL; 1.
DR   PANTHER; PTHR43555:SF1; PHOSPHORIBOSYLFORMYLGLYCINAMIDINE SYNTHASE SUBUNIT PURL; 1.
DR   Pfam; PF00586; AIRS; 2.
DR   Pfam; PF02769; AIRS_C; 2.
DR   Pfam; PF18072; FGAR-AT_linker; 1.
DR   PIRSF; PIRSF001587; FGAM_synthase_II; 1.
DR   SUPFAM; SSF56042; PurM C-terminal domain-like; 2.
DR   SUPFAM; SSF55326; PurM N-terminal domain-like; 2.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Ligase; Magnesium; Metal-binding;
KW   Nucleotide-binding; Purine biosynthesis.
FT   CHAIN           1..761
FT                   /note="Phosphoribosylformylglycinamidine synthase subunit
FT                   PurL"
FT                   /id="PRO_0000236651"
FT   ACT_SITE        49
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   ACT_SITE        96
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         52
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         92
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         94
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         95..98
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         117
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         118
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         241
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         269
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         318..320
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         502
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         539
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         540
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT   BINDING         542
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
SQ   SEQUENCE   761 AA;  81712 MW;  4728B333DB85D708 CRC64;
     MKHTDIEVTL THAEEHGLSA EEFSQICTIL GRTPTITELG IFSVMWSEHC SYKNSIAVLK
     TLPREGGALL TSAGEENAGL VDIGDNLAVA FKIESHNHPS AVEPYQGAAT GVGGIHRDIF
     TMGARPVASL NSLRFGSPKD PRVRYLVDGV VRGIGDYGNS FGVPTVAGDI YFEEGYTGNP
     LVNAMSVGIV EHHKTVSATA YGTGNPVLIV GSSTGRDGIH GATFASEDLS EASEEKRPSV
     QVGDPFAEKL LLEATLEAIE TGYVVGLQDM GAAGITSSTS EMSARGIEKY GVGGIEIDLD
     LVPIREAGMS AYEIMLSESQ ERMLIVAAKG FEDKIIEVYQ KWDVQAVVIG EVTDDNHVRV
     KHQGQVVANI PAISLVLGGG APVYKREAKE KKPETPLANM VADSTLNFNE LGLALLSRPN
     IASKQWVYRQ YDSMVQTNTL TPTGQTDAAV IRIKGTNKGV AMKTDCNARY VYLNPLAGGK
     IAVAECARNI ACTGARPLAI TNCLNFGNPL KPEVYFQFKE SVRGMGEACR TFNTPVTGGN
     VSFYNETFIA GQRTAIYPTP MIGMIGLLDN IENLVGSTFT ASGDRILLLG NPQLTLDGSE
     YLVMQYGTPG QDAPAVDLEH EAQLQRLLVA LAEQKLLHSA HDVSDGGLLV ALAEKAMMNQ
     EMPLSFRVHL SNNDKSETAI QQQLFSEAQG RVVLSAAPEA VAAIMALAND YNLPIQDIGE
     VVNQQTISLS INEQEVVNLP LSNVAHAYYH ALEHALHLDE L
//
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