ID PUA1B_XENLA Reviewed; 454 AA.
AC Q68F20;
DT 05-OCT-2010, integrated into UniProtKB/Swiss-Prot.
DT 11-OCT-2004, sequence version 1.
DT 27-MAR-2024, entry version 88.
DE RecName: Full=Adenylosuccinate synthetase isozyme 1 B {ECO:0000255|HAMAP-Rule:MF_03126};
DE Short=AMPSase 1 B {ECO:0000255|HAMAP-Rule:MF_03126};
DE Short=AdSS 1 B {ECO:0000255|HAMAP-Rule:MF_03126};
DE EC=6.3.4.4 {ECO:0000255|HAMAP-Rule:MF_03126};
DE AltName: Full=Adenylosuccinate synthetase, basic isozyme B {ECO:0000255|HAMAP-Rule:MF_03126};
DE AltName: Full=Adenylosuccinate synthetase, muscle isozyme B {ECO:0000255|HAMAP-Rule:MF_03126};
DE Short=M-type adenylosuccinate synthetase B {ECO:0000255|HAMAP-Rule:MF_03126};
DE AltName: Full=IMP--aspartate ligase 1 B {ECO:0000255|HAMAP-Rule:MF_03126};
GN Name=adss1-b; Synonyms=adssl1-b;
OS Xenopus laevis (African clawed frog).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Xenopus.
OX NCBI_TaxID=8355;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Spleen;
RG NIH - Xenopus Gene Collection (XGC) project;
RL Submitted (AUG-2004) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Component of the purine nucleotide cycle (PNC), which
CC interconverts IMP and AMP to regulate the nucleotide levels in various
CC tissues, and which contributes to glycolysis and ammoniagenesis.
CC Catalyzes the first committed step in the biosynthesis of AMP from IMP.
CC {ECO:0000250|UniProtKB:Q8N142}.
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_03126};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_03126};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_03126};
CC -!- PATHWAY: Purine metabolism; AMP biosynthesis via de novo pathway; AMP
CC from IMP: step 1/2. {ECO:0000255|HAMAP-Rule:MF_03126}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_03126}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03126}.
CC -!- SIMILARITY: Belongs to the adenylosuccinate synthetase family.
CC {ECO:0000255|HAMAP-Rule:MF_03126}.
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DR EMBL; BC080025; AAH80025.1; -; mRNA.
DR RefSeq; NP_001087505.1; NM_001094036.1.
DR AlphaFoldDB; Q68F20; -.
DR SMR; Q68F20; -.
DR DNASU; 447329; -.
DR GeneID; 447329; -.
DR KEGG; xla:447329; -.
DR AGR; Xenbase:XB-GENE-6254009; -.
DR CTD; 447329; -.
DR Xenbase; XB-GENE-6254009; adss1.S.
DR OMA; IINARTW; -.
DR OrthoDB; 122722at2759; -.
DR UniPathway; UPA00075; UER00335.
DR Proteomes; UP000186698; Chromosome 8S.
DR Bgee; 447329; Expressed in muscle tissue and 17 other cell types or tissues.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0004019; F:adenylosuccinate synthase activity; ISS:UniProtKB.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0044208; P:'de novo' AMP biosynthetic process; IEA:UniProtKB-UniPathway.
DR CDD; cd03108; AdSS; 1.
DR Gene3D; 3.40.440.10; Adenylosuccinate Synthetase, subunit A, domain 1; 1.
DR Gene3D; 1.10.300.10; Adenylosuccinate Synthetase, subunit A, domain 2; 1.
DR Gene3D; 3.90.170.10; Adenylosuccinate Synthetase, subunit A, domain 3; 1.
DR HAMAP; MF_00011; Adenylosucc_synth; 1.
DR HAMAP; MF_03126; Adenylosucc_synth_vert_basic; 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; IPR042111; Adenylosuccinate_synth_dom3.
DR InterPro; IPR001114; Adenylosuccinate_synthetase.
DR InterPro; IPR027509; AdSS_1_vert.
DR InterPro; IPR027417; P-loop_NTPase.
DR NCBIfam; TIGR00184; purA; 1.
DR PANTHER; PTHR11846; ADENYLOSUCCINATE SYNTHETASE; 1.
DR PANTHER; PTHR11846:SF2; ADENYLOSUCCINATE SYNTHETASE ISOZYME 1; 1.
DR Pfam; PF00709; Adenylsucc_synt; 1.
DR SMART; SM00788; Adenylsucc_synt; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR PROSITE; PS01266; ADENYLOSUCCIN_SYN_1; 1.
DR PROSITE; PS00513; ADENYLOSUCCIN_SYN_2; 1.
PE 2: Evidence at transcript level;
KW Cytoplasm; GTP-binding; Ligase; Magnesium; Metal-binding;
KW Nucleotide-binding; Purine biosynthesis; Reference proteome.
FT CHAIN 1..454
FT /note="Adenylosuccinate synthetase isozyme 1 B"
FT /id="PRO_0000398892"
FT REGION 1..24
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 40
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT ACT_SITE 68
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 39..45
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 40..43
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_03126"
FT BINDING 40
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 40
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 65..68
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_03126"
FT BINDING 67..69
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 67
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 160
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_03126"
FT BINDING 174
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 253
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_03126"
FT BINDING 268
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_03126"
FT BINDING 328..334
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 332
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_03126"
FT BINDING 334
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 360..362
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
FT BINDING 442..445
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03126"
SQ SEQUENCE 454 AA; 50210 MW; B34EA4DB3B49C800 CRC64;
MSGTRASNDR SSHPGAGGHK RPRYDVGNKV TVVLGAQWGD EGKGKVVDLL AMDSDIICRC
QGGNNAGHTV VVEGKEYDFH LFPSGIINPK AISFIGNGVV IHLPGLFEEA DKNEKKGLKD
WEKRLIISDR AHIVCDFHQA VDGLQEVQRQ AQEGKNIGTT KKGIGPTYSS KASRTGLRIC
DLLSDFDEFS ARFKNLAHQY QSMFSNLEVD VDGQLKKLKM YAEKIRPMVR DGVYFMYDAL
HGSPKKILVE GANAALLDID FGTYPFVTSS NCTVGGVCTG LGIPPQNVGN VYGVVKAYTT
RVGIGAFPTE QINESGTLLQ TRGHEWGVTT GRKRRCGWLD LVILRYAHMI NGFTALALTK
LDILDVLDEI KVGVAYRLNG KRIPYFPANQ EILQKIEVEY EVMPGWKSDT TGARKWDDLP
TKAQNYIRFV ETHIGVPVKW VGVGKSRESM IELF
//
