ID   AROQ_BUCAI              Reviewed;         150 AA.
AC   P57479;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2000, sequence version 1.
DT   03-AUG-2022, entry version 103.
DE   RecName: Full=3-dehydroquinate dehydratase;
DE            Short=3-dehydroquinase;
DE            EC=4.2.1.10;
DE   AltName: Full=Type II DHQase;
GN   Name=aroQ; OrderedLocusNames=BU399;
OS   Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon
OS   pisum symbiotic bacterium).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=107806;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=APS;
RX   PubMed=10993077; DOI=10.1038/35024074;
RA   Shigenobu S., Watanabe H., Hattori M., Sakaki Y., Ishikawa H.;
RT   "Genome sequence of the endocellular bacterial symbiont of aphids Buchnera
RT   sp. APS.";
RL   Nature 407:81-86(2000).
CC   -!- FUNCTION: Catalyzes a trans-dehydration via an enolate intermediate.
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=3-dehydroquinate = 3-dehydroshikimate + H2O;
CC         Xref=Rhea:RHEA:21096, ChEBI:CHEBI:15377, ChEBI:CHEBI:16630,
CC         ChEBI:CHEBI:32364; EC=4.2.1.10;
CC   -!- PATHWAY: Metabolic intermediate biosynthesis; chorismate biosynthesis;
CC       chorismate from D-erythrose 4-phosphate and phosphoenolpyruvate: step
CC       3/7.
CC   -!- SUBUNIT: Homododecamer. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the type-II 3-dehydroquinase family.
CC       {ECO:0000305}.
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DR   EMBL; BA000003; BAB13102.1; -; Genomic_DNA.
DR   RefSeq; NP_240216.1; NC_002528.1.
DR   RefSeq; WP_009874357.1; NC_002528.1.
DR   AlphaFoldDB; P57479; -.
DR   SMR; P57479; -.
DR   STRING; 107806.10039068; -.
DR   EnsemblBacteria; BAB13102; BAB13102; BAB13102.
DR   KEGG; buc:BU399; -.
DR   PATRIC; fig|107806.10.peg.413; -.
DR   eggNOG; COG0757; Bacteria.
DR   HOGENOM; CLU_090968_1_0_6; -.
DR   OMA; AYTHYSY; -.
DR   UniPathway; UPA00053; UER00086.
DR   Proteomes; UP000001806; Chromosome.
DR   GO; GO:0003855; F:3-dehydroquinate dehydratase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009073; P:aromatic amino acid family biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0008652; P:cellular amino acid biosynthetic process; IEA:UniProtKB-KW.
DR   GO; GO:0009423; P:chorismate biosynthetic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd00466; DHQase_II; 1.
DR   Gene3D; 3.40.50.9100; -; 1.
DR   HAMAP; MF_00169; AroQ; 1.
DR   InterPro; IPR001874; DHquinase_II.
DR   InterPro; IPR018509; DHquinase_II_CS.
DR   InterPro; IPR036441; DHquinase_II_sf.
DR   PANTHER; PTHR21272; PTHR21272; 1.
DR   Pfam; PF01220; DHquinase_II; 1.
DR   PIRSF; PIRSF001399; DHquinase_II; 1.
DR   SUPFAM; SSF52304; SSF52304; 1.
DR   TIGRFAMs; TIGR01088; aroQ; 1.
DR   PROSITE; PS01029; DEHYDROQUINASE_II; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Aromatic amino acid biosynthesis; Lyase;
KW   Reference proteome.
FT   CHAIN           1..150
FT                   /note="3-dehydroquinate dehydratase"
FT                   /id="PRO_0000159883"
FT   ACT_SITE        26
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        103
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250"
FT   BINDING         77
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         83
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         90
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         104..105
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         114
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   SITE            21
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   150 AA;  17058 MW;  8DB2089928FF2342 CRC64;
     MKNNINILLI NGPNLNLLGT RETEIYGDIT LPDLLKNLEK RAKKLNMSLK HIQSNAEHVL
     IDKIHSSRKN INYIIINPAA FTHTSIAIRD ALIAVEIPFI EIHISNIYSR EDFRSHSWLS
     DISQGVICGL GLDGYHWALE TISNRLIHLK