PURA_PSEST
ID PURA_PSEST Reviewed; 174 AA.
AC O30549;
DT 30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT 01-JAN-1998, sequence version 1.
DT 03-AUG-2022, entry version 102.
DE RecName: Full=Adenylosuccinate synthetase {ECO:0000255|HAMAP-Rule:MF_00011};
DE Short=AMPSase {ECO:0000255|HAMAP-Rule:MF_00011};
DE Short=AdSS {ECO:0000255|HAMAP-Rule:MF_00011};
DE EC=6.3.4.4 {ECO:0000255|HAMAP-Rule:MF_00011};
DE AltName: Full=IMP--aspartate ligase {ECO:0000255|HAMAP-Rule:MF_00011};
DE Flags: Fragment;
GN Name=purA {ECO:0000255|HAMAP-Rule:MF_00011};
OS Pseudomonas stutzeri (Pseudomonas perfectomarina).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
OX NCBI_TaxID=316;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=DSM 10701 / JCM 21571 / JM300;
RX PubMed=9493393; DOI=10.1099/00221287-144-2-569;
RA Sikorski J., Graupner S., Lorenz M.G., Wackernagel W.;
RT "Natural genetic transformation of Pseudomonas stutzeri in a non-sterile
RT soil.";
RL Microbiology 144:569-576(1998).
CC -!- FUNCTION: Plays an important role in the de novo pathway of purine
CC nucleotide biosynthesis. Catalyzes the first committed step in the
CC biosynthesis of AMP from IMP. {ECO:0000255|HAMAP-Rule:MF_00011}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=GTP + IMP + L-aspartate = GDP + 2 H(+) + N(6)-(1,2-
CC dicarboxyethyl)-AMP + phosphate; Xref=Rhea:RHEA:15753,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29991, ChEBI:CHEBI:37565,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:57567, ChEBI:CHEBI:58053,
CC ChEBI:CHEBI:58189; EC=6.3.4.4; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00011};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00011};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00011};
CC -!- PATHWAY: Purine metabolism; AMP biosynthesis via de novo pathway; AMP
CC from IMP: step 1/2. {ECO:0000255|HAMAP-Rule:MF_00011}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00011}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00011}.
CC -!- SIMILARITY: Belongs to the adenylosuccinate synthetase family.
CC {ECO:0000255|HAMAP-Rule:MF_00011}.
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DR EMBL; AF010189; AAC46134.1; -; Genomic_DNA.
DR AlphaFoldDB; O30549; -.
DR SMR; O30549; -.
DR STRING; 32042.PstZobell_10939; -.
DR eggNOG; COG0104; Bacteria.
DR UniPathway; UPA00075; UER00335.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0004019; F:adenylosuccinate synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0044208; P:'de novo' AMP biosynthetic process; IEA:UniProtKB-UniPathway.
DR Gene3D; 1.10.300.10; -; 1.
DR Gene3D; 3.40.440.10; -; 1.
DR HAMAP; MF_00011; Adenylosucc_synth; 1.
DR InterPro; IPR018220; Adenylosuccin_syn_GTP-bd.
DR InterPro; IPR033128; Adenylosuccin_syn_Lys_AS.
DR InterPro; IPR042109; Adenylosuccinate_synth_dom1.
DR InterPro; IPR042110; Adenylosuccinate_synth_dom2.
DR InterPro; IPR001114; Adenylosuccinate_synthetase.
DR InterPro; IPR027417; P-loop_NTPase.
DR PANTHER; PTHR11846; PTHR11846; 1.
DR Pfam; PF00709; Adenylsucc_synt; 1.
DR SMART; SM00788; Adenylsucc_synt; 1.
DR SUPFAM; SSF52540; SSF52540; 1.
DR PROSITE; PS01266; ADENYLOSUCCIN_SYN_1; 1.
DR PROSITE; PS00513; ADENYLOSUCCIN_SYN_2; 1.
PE 3: Inferred from homology;
KW Cytoplasm; GTP-binding; Ligase; Magnesium; Metal-binding;
KW Nucleotide-binding; Purine biosynthesis.
FT CHAIN 1..>174
FT /note="Adenylosuccinate synthetase"
FT /id="PRO_0000095216"
FT ACT_SITE 14
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT ACT_SITE 42
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT BINDING 13..19
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT BINDING 14..17
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /ligand_note="ligand shared between dimeric partners"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT BINDING 14
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT BINDING 39..42
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /ligand_note="ligand shared between dimeric partners"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT BINDING 41..43
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT BINDING 41
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT BINDING 130
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /ligand_note="ligand shared between dimeric partners"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT BINDING 144
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00011"
FT NON_TER 174
SQ SEQUENCE 174 AA; 19010 MW; E8CD65E48BEB7345 CRC64;
MGKNVVVLGT QWGDEGKGKI VDLLTDQAAA VVRYQGGHNA GHTLVIDGEK TVLHLIPSGI
LRENVQCLIG NGVVVAPDAL LREITKLEEK GVPVRERLRI SPSCTLILPY HVALDQAREA
SRSEGKIGTT GRGIGPAYED KVARRGLRIG DLFNPERFAV KLRELLEYHN FALQ
