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HOSA_SULIK
ID   HOSA_SULIK              Reviewed;         461 AA.
AC   C4KGW9;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   07-JUL-2009, sequence version 1.
DT   03-AUG-2022, entry version 63.
DE   RecName: Full=Homocitrate synthase {ECO:0000255|HAMAP-Rule:MF_02222};
DE            Short=HCS {ECO:0000255|HAMAP-Rule:MF_02222};
DE            EC=2.3.3.14 {ECO:0000250|UniProtKB:O87198, ECO:0000255|HAMAP-Rule:MF_02222};
GN   OrderedLocusNames=M164_1229;
OS   Sulfolobus islandicus (strain M.16.4 / Kamchatka #3).
OC   Archaea; Crenarchaeota; Thermoprotei; Sulfolobales; Sulfolobaceae;
OC   Sulfolobus.
OX   NCBI_TaxID=426118;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=M.16.4 / Kamchatka #3;
RX   PubMed=19435847; DOI=10.1073/pnas.0808945106;
RA   Reno M.L., Held N.L., Fields C.J., Burke P.V., Whitaker R.J.;
RT   "Biogeography of the Sulfolobus islandicus pan-genome.";
RL   Proc. Natl. Acad. Sci. U.S.A. 106:8605-8610(2009).
CC   -!- FUNCTION: Catalyzes the aldol-type condensation of 2-oxoglutarate with
CC       acetyl-CoA to yield homocitrate. Carries out the first step of the
CC       alpha-aminoadipate (AAA) lysine biosynthesis pathway.
CC       {ECO:0000250|UniProtKB:O87198}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-oxoglutarate + acetyl-CoA + H2O = (2R)-homocitrate + CoA +
CC         H(+); Xref=Rhea:RHEA:12929, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16810, ChEBI:CHEBI:57287, ChEBI:CHEBI:57288,
CC         ChEBI:CHEBI:58884; EC=2.3.3.14;
CC         Evidence={ECO:0000250|UniProtKB:O87198};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:12930;
CC         Evidence={ECO:0000250|UniProtKB:O87198};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000250|UniProtKB:O87198};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000250|UniProtKB:O87198};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-lysine biosynthesis via AAA
CC       pathway; L-alpha-aminoadipate from 2-oxoglutarate: step 1/5.
CC       {ECO:0000250|UniProtKB:O87198}.
CC   -!- SIMILARITY: Belongs to the alpha-IPM synthase/homocitrate synthase
CC       family. Homocitrate synthase LYS20/LYS21 subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_02222}.
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DR   EMBL; CP001402; ACR41833.1; -; Genomic_DNA.
DR   RefSeq; WP_012711253.1; NC_012726.1.
DR   AlphaFoldDB; C4KGW9; -.
DR   SMR; C4KGW9; -.
DR   EnsemblBacteria; ACR41833; ACR41833; M164_1229.
DR   GeneID; 7814454; -.
DR   GeneID; 7940569; -.
DR   KEGG; sid:M164_1229; -.
DR   HOGENOM; CLU_022158_4_0_2; -.
DR   OMA; DWSNGMR; -.
DR   BioCyc; SISL426118:GI01-1257-MON; -.
DR   UniPathway; UPA00033; UER00028.
DR   Proteomes; UP000001479; Chromosome.
DR   GO; GO:0004410; F:homocitrate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0019878; P:lysine biosynthetic process via aminoadipic acid; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_02222; Homocitr_synth_fung_arch; 1.
DR   InterPro; IPR002034; AIPM/Hcit_synth_CS.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR011008; Dimeric_a/b-barrel.
DR   InterPro; IPR011872; Homocitrate_synth_fun/arc.
DR   InterPro; IPR000891; PYR_CT.
DR   InterPro; IPR019887; Tscrpt_reg_AsnC/Lrp_C.
DR   Pfam; PF01037; AsnC_trans_reg; 1.
DR   Pfam; PF00682; HMGL-like; 1.
DR   SUPFAM; SSF54909; SSF54909; 1.
DR   TIGRFAMs; TIGR02146; LysS_fung_arch; 1.
DR   PROSITE; PS00816; AIPM_HOMOCIT_SYNTH_2; 1.
DR   PROSITE; PS50991; PYR_CT; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Lysine biosynthesis; Magnesium; Manganese;
KW   Metal-binding; Transferase.
FT   CHAIN           1..461
FT                   /note="Homocitrate synthase"
FT                   /id="PRO_1000213318"
FT   DOMAIN          4..259
FT                   /note="Pyruvate carboxyltransferase"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01151"
FT   ACT_SITE        292
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250|UniProtKB:O87198"
FT   BINDING         12
FT                   /ligand="2-oxoglutarate"
FT                   /ligand_id="ChEBI:CHEBI:16810"
FT                   /evidence="ECO:0000250|UniProtKB:O87198"
FT   BINDING         13
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:O87198"
FT   BINDING         76
FT                   /ligand="2-oxoglutarate"
FT                   /ligand_id="ChEBI:CHEBI:16810"
FT                   /evidence="ECO:0000250|UniProtKB:O87198"
FT   BINDING         136
FT                   /ligand="2-oxoglutarate"
FT                   /ligand_id="ChEBI:CHEBI:16810"
FT                   /evidence="ECO:0000250|UniProtKB:O87198"
FT   BINDING         170
FT                   /ligand="2-oxoglutarate"
FT                   /ligand_id="ChEBI:CHEBI:16810"
FT                   /evidence="ECO:0000250|UniProtKB:O87198"
FT   BINDING         198
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:O87198"
FT   BINDING         200
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:O87198"
SQ   SEQUENCE   461 AA;  50825 MW;  1067BD15BAEF4646 CRC64;
     MIKVGILDST LREGEQTPGV IFTVDQRVEI AKALSDLGVS MIEAGHPAVS PDIYEGIKRI
     VKLKKEGIIT SEIVGHSRAV KRDIEIAAEL EVDRIAIFYG VSDLHLKAKH KATREEALRT
     IAETISYAKN HGVKVRFTAE DGSRTDFDFL VTVSKTARDA GADRVSIADT VGILYPSKTK
     ELFSALTREV PNLEFDIHAH NDLGLAVANA LAAIEGGATI IHATVNGLGE RVGIVPLQQI
     AAAIKYHFGI EVVKLDKLQY VSSLVEKYSG IPMPPNYPIT GDYAFLHKAG VHVAGVLNDP
     RTYEFMPPET FGRTRDYTID KYTGKHALRD KYEKLGVKIS DAEMDQILAK IKSNTTIRFY
     RDVDLLELAE EVTGRVLKPR PPEQIEALIS VKCDSNVYTT SVTRRLSVIN GVKEVMEISG
     DYDILVKVQA KDSNELNQII ESIRATKGVR STLTSLVLKK M
 
 
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