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TRPE_BUCRM
ID   TRPE_BUCRM              Reviewed;         514 AA.
AC   Q44689;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   03-AUG-2022, entry version 98.
DE   RecName: Full=Anthranilate synthase component 1;
DE            Short=AS;
DE            Short=ASI;
DE            EC=4.1.3.27;
GN   Name=trpE;
OS   Buchnera aphidicola subsp. Rhopalosiphum maidis.
OG   Plasmid pBRm.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=118109;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8642610; DOI=10.1007/bf02498635;
RA   Rouhbakhsh D., Lai C.-Y., von Dohlen C.D., Clark M.A., Baumann L.,
RA   Baumann P., Moran N.A., Voegtlin D.J.;
RT   "The tryptophan biosynthetic pathway of aphid endosymbionts (Buchnera):
RT   genetics and evolution of plasmid-associated anthranilate synthase (trpEG)
RT   within the aphididae.";
RL   J. Mol. Evol. 42:414-421(1996).
CC   -!- FUNCTION: Part of a heterotetrameric complex that catalyzes the two-
CC       step biosynthesis of anthranilate, an intermediate in the biosynthesis
CC       of L-tryptophan. In the first step, the glutamine-binding beta subunit
CC       (TrpG) of anthranilate synthase (AS) provides the glutamine
CC       amidotransferase activity which generates ammonia as a substrate that,
CC       along with chorismate, is used in the second step, catalyzed by the
CC       large alpha subunit of AS (TrpE) to produce anthranilate. In the
CC       absence of TrpG, TrpE can synthesize anthranilate directly from
CC       chorismate and high concentrations of ammonia (By similarity).
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=chorismate + L-glutamine = anthranilate + H(+) + L-glutamate +
CC         pyruvate; Xref=Rhea:RHEA:21732, ChEBI:CHEBI:15361, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16567, ChEBI:CHEBI:29748, ChEBI:CHEBI:29985,
CC         ChEBI:CHEBI:58359; EC=4.1.3.27;
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000250|UniProtKB:P00897};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000250|UniProtKB:P00897};
CC   -!- ACTIVITY REGULATION: Feedback inhibited by tryptophan. {ECO:0000250}.
CC   -!- PATHWAY: Amino-acid biosynthesis; L-tryptophan biosynthesis; L-
CC       tryptophan from chorismate: step 1/5.
CC   -!- SUBUNIT: Heterotetramer consisting of two non-identical subunits: a
CC       beta subunit (TrpG) and a large alpha subunit (TrpE). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the anthranilate synthase component I family.
CC       {ECO:0000305}.
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DR   EMBL; L43550; AAB05974.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q44689; -.
DR   SMR; Q44689; -.
DR   UniPathway; UPA00035; UER00040.
DR   GO; GO:0004049; F:anthranilate synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0000162; P:tryptophan biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 3.60.120.10; -; 1.
DR   InterPro; IPR005801; ADC_synthase.
DR   InterPro; IPR019999; Anth_synth_I-like.
DR   InterPro; IPR006805; Anth_synth_I_N.
DR   InterPro; IPR005257; Anth_synth_I_TrpE.
DR   InterPro; IPR015890; Chorismate_C.
DR   PANTHER; PTHR11236; PTHR11236; 1.
DR   PANTHER; PTHR11236:SF22; PTHR11236:SF22; 1.
DR   Pfam; PF04715; Anth_synt_I_N; 1.
DR   Pfam; PF00425; Chorismate_bind; 1.
DR   PIRSF; PIRSF001373; TrpE; 1.
DR   PRINTS; PR00095; ANTSNTHASEI.
DR   SUPFAM; SSF56322; SSF56322; 1.
DR   TIGRFAMs; TIGR00565; trpE_proteo; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Aromatic amino acid biosynthesis; Lyase;
KW   Magnesium; Metal-binding; Plasmid; Tryptophan biosynthesis.
FT   CHAIN           1..514
FT                   /note="Anthranilate synthase component 1"
FT                   /id="PRO_0000154085"
FT   BINDING         40
FT                   /ligand="L-tryptophan"
FT                   /ligand_id="ChEBI:CHEBI:57912"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
FT   BINDING         291..293
FT                   /ligand="L-tryptophan"
FT                   /ligand_id="ChEBI:CHEBI:57912"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
FT   BINDING         328..329
FT                   /ligand="chorismate"
FT                   /ligand_id="ChEBI:CHEBI:29748"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
FT   BINDING         361
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
FT   BINDING         449
FT                   /ligand="chorismate"
FT                   /ligand_id="ChEBI:CHEBI:29748"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
FT   BINDING         469
FT                   /ligand="chorismate"
FT                   /ligand_id="ChEBI:CHEBI:29748"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
FT   BINDING         482..484
FT                   /ligand="chorismate"
FT                   /ligand_id="ChEBI:CHEBI:29748"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
FT   BINDING         484
FT                   /ligand="chorismate"
FT                   /ligand_id="ChEBI:CHEBI:29748"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
FT   BINDING         497
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:P00897"
SQ   SEQUENCE   514 AA;  58772 MW;  1E6E38FBA0F7FB6F CRC64;
     MKKKPYQIEI IQKKAPYHPD PTMIFNHLCE SRSATLLLET AEVNKKKDLE SIMIIDSAIR
     ISSKKNLVKL KPLSINGEEI LLALKKRIPK KIEIYEKNKN IILVFPKIEK NLDEDKKLFS
     LSVFDAFRFM IKIFENKEKK SKAMFFGGLF SYDLSQFFES LPKLKGNQKC SNFCFYLAET
     LLVLDHQKKT CLIQNSLFTK NANEKKRIKE RSIEIEKKLN EKLKSIPKVK ITDINLTSNM
     NNFEYGSIIK KLQKLIQKGE IFQVVPSRKF YLPCPNPLSA YQKLKKSNPS PYMFFMQDKD
     FTLFGASPES SLKYDEKTRK IELYPIAGTR PRGRTEDGNL DLDLDSRIEL EMRTNHKELA
     EHLMLVDLAR NDLARICKPG SRYVSDLVKV DKYSHVMHLV SKVIGELKEG LDALHAYASC
     MNMGTLTGAP KVRAMQLIAE YEKEKRGSYG GAIGYFTDLG NLDTCITIRS AYVENIATIQ
     AGAGIVYNSI PEDEVNESLN KAQAVINAIK NAHY
 
 
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