PURL_LACDA
ID PURL_LACDA Reviewed; 740 AA.
AC Q1G9F8;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 27-JUN-2006, sequence version 1.
DT 03-AUG-2022, entry version 93.
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=Ldb1440;
OS Lactobacillus delbrueckii subsp. bulgaricus (strain ATCC 11842 / DSM 20081
OS / BCRC 10696 / JCM 1002 / NBRC 13953 / NCIMB 11778 / NCTC 12712 / WDCM
OS 00102 / Lb 14).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC Lactobacillus.
OX NCBI_TaxID=390333;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 11842 / DSM 20081 / BCRC 10696 / JCM 1002 / NBRC 13953 / NCIMB
RC 11778 / NCTC 12712 / WDCM 00102 / Lb 14;
RX PubMed=16754859; DOI=10.1073/pnas.0603024103;
RA van de Guchte M., Penaud S., Grimaldi C., Barbe V., Bryson K., Nicolas P.,
RA Robert C., Oztas S., Mangenot S., Couloux A., Loux V., Dervyn R., Bossy R.,
RA Bolotin A., Batto J.-M., Walunas T., Gibrat J.-F., Bessieres P.,
RA Weissenbach J., Ehrlich S.D., Maguin E.;
RT "The complete genome sequence of Lactobacillus bulgaricus reveals extensive
RT and ongoing reductive evolution.";
RL Proc. Natl. Acad. Sci. U.S.A. 103:9274-9279(2006).
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; CR954253; CAI98241.1; -; Genomic_DNA.
DR RefSeq; WP_004560840.1; NZ_JQAV01000009.1.
DR AlphaFoldDB; Q1G9F8; -.
DR SMR; Q1G9F8; -.
DR STRING; 390333.Ldb1440; -.
DR EnsemblBacteria; CAI98241; CAI98241; Ldb1440.
DR KEGG; ldb:Ldb1440; -.
DR PATRIC; fig|390333.13.peg.1928; -.
DR eggNOG; COG0046; Bacteria.
DR HOGENOM; CLU_003100_0_1_9; -.
DR OMA; FIEPYQG; -.
DR BioCyc; LDEL390333:LDB_RS06200-MON; -.
DR UniPathway; UPA00074; UER00128.
DR Proteomes; UP000001259; Chromosome.
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 Gene3D; 3.30.1330.10; -; 2.
DR Gene3D; 3.90.650.10; -; 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 PANTHER; PTHR43555; PTHR43555; 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; SSF55326; SSF55326; 2.
DR SUPFAM; SSF56042; SSF56042; 2.
DR TIGRFAMs; TIGR01736; FGAM_synth_II; 1.
PE 3: Inferred from homology;
KW ATP-binding; Cytoplasm; Ligase; Magnesium; Metal-binding;
KW Nucleotide-binding; Purine biosynthesis; Reference proteome.
FT CHAIN 1..740
FT /note="Phosphoribosylformylglycinamidine synthase subunit
FT PurL"
FT /id="PRO_1000050313"
FT ACT_SITE 53
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT ACT_SITE 99
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 56
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 95
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 97
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 98..101
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 120
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 121
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 244
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 274
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 501
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 538
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 539
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
FT BINDING 541
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00420"
SQ SEQUENCE 740 AA; 80011 MW; 0660928C36F4333F CRC64;
MMQEMTPEEI KEKKPYLDWS LSEEEYDYIC DKLLHRLPNY TETGLFAAMW SEHCSYKKSK
SVLRLFPTKG PRILQGPGEG AGVVDIGDGQ AVVFKAESHN HPTAVEPYQG AATGVGGILR
DVFSMGARPV ATLDSLHFGE LDDAHTRWLL NETVAGIGGY GNCMGIPTVG GELTFDDIYK
GNPVMNAMSV GLLDVKDMQK GLAQGEGNAV MYVGAKTGRD GIHGATFASH SFDSEHESQR
SAVQVGDPFM EKLLLEACLE LTQKHADWLV GIQDMGAAGI VSSSSEMASE GKSGMELNLD
LVPQRESGMS AYEIMLSESQ ERMLLCVKKG HEEDVKKIFD FYDLDAVVIG RITSGHNYVL
RHHGEVVCDI PVTSLTEDVL EEPSEEKQPQ HMIDDAAKPA WEPEITDLAK TYKQMLAQPT
IASKGMFTQT YDSMVRTSTV VGPGEDSGVL RVRGTHKGIA MTTDGNGRFI YLDPEIGGKR
AVVEAAGNII ASGAEPLAIT DCLNFGNPNE PEVFWELHHS VMGIAKACEV LETPVVSGNV
SLYNETDGKS IYPTPMVGMV GLVKNLDHLV RDSFQEEGDD LYLVGQTGAD YAGSELQKML
TGEIFGSLND LDLDHIKDYQ KRLLAQMEAG HVASAHDLSE GGLAVSLAES SFGHGIGAEV
ACDLTSAELF SETPGRFLVS VPSEYSAEFA AALAADAVKI GQTAGDSLKL TLKDQAADLP
VAELKQIWEE ALPCLMKSKD
