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Protein

3-dehydroquinate dehydratase

Gene

aroQ

Organism
Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Catalyzes a trans-dehydration via an enolate intermediate.By similarity

Catalytic activityi

3-dehydroquinate = 3-dehydroshikimate + H2O.

Kineticsi

  1. KM=1100 µM for 3-dehydroquinate (at pH 8 and 25 degrees Celsius)

    Pathwayi: chorismate biosynthesis

    This protein is involved in step 3 of the subpathway that synthesizes chorismate from D-erythrose 4-phosphate and phosphoenolpyruvate.
    Proteins known to be involved in the 7 steps of the subpathway in this organism are:
    1. Phospho-2-dehydro-3-deoxyheptonate aldolase (aroH), Phospho-2-dehydro-3-deoxyheptonate aldolase (SCO3210)
    2. 3-dehydroquinate synthase (aroB)
    3. 3-dehydroquinate dehydratase (aroQ)
    4. no protein annotated in this organism
    5. Shikimate kinase (aroK)
    6. 3-phosphoshikimate 1-carboxyvinyltransferase 1 (aroA1), 3-phosphoshikimate 1-carboxyvinyltransferase 2 (aroA2)
    7. Chorismate synthase (aroC)
    This subpathway is part of the pathway chorismate biosynthesis, which is itself part of Metabolic intermediate biosynthesis.
    View all proteins of this organism that are known to be involved in the subpathway that synthesizes chorismate from D-erythrose 4-phosphate and phosphoenolpyruvate, the pathway chorismate biosynthesis and in Metabolic intermediate biosynthesis.

    Sites

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Sitei24Transition state stabilizer1
    Active sitei29Proton acceptor1
    Binding sitei80Substrate1
    Binding sitei86Substrate1
    Binding sitei93Substrate1
    Active sitei107Proton donor1
    Binding sitei118Substrate1

    GO - Molecular functioni

    GO - Biological processi

    Keywordsi

    Molecular functionLyase
    Biological processAmino-acid biosynthesis, Aromatic amino acid biosynthesis

    Enzyme and pathway databases

    BRENDAi4.2.1.10 5998
    SABIO-RKP15474
    UniPathwayiUPA00053; UER00086

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    3-dehydroquinate dehydratase (EC:4.2.1.10)
    Short name:
    3-dehydroquinase
    Alternative name(s):
    Type II DHQase
    Gene namesi
    Name:aroQ
    Ordered Locus Names:SCO1961
    ORF Names:SCC54.21c
    OrganismiStreptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)
    Taxonomic identifieri100226 [NCBI]
    Taxonomic lineageiBacteriaActinobacteriaStreptomycetalesStreptomycetaceaeStreptomycesStreptomyces albidoflavus group
    Proteomesi
    • UP000001973 Componenti: Chromosome

    Pathology & Biotechi

    Mutagenesis

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Mutagenesisi24R → A: Reduces Kcat 30000-fold. Reduces KM for 3-dehydroquinate 6-fold. 1 Publication1
    Mutagenesisi24R → K: Reduces Kcat 2700-fold. Reduces KM for 3-dehydroquinate 4-fold. 1 Publication1
    Mutagenesisi24R → Q: Reduces Kcat 3100-fold. Reduces KM for 3-dehydroquinate 8-fold. 1 Publication1

    Chemistry databases

    ChEMBLiCHEMBL5276
    DrugBankiDB02786 2-Anhydro-3-Fluoro-Quinic Acid
    DB04347 3-Dehydroshikimate

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Initiator methionineiRemoved1 Publication
    ChainiPRO_00001599302 – 1573-dehydroquinate dehydrataseAdd BLAST156

    Proteomic databases

    PRIDEiP15474

    Interactioni

    Subunit structurei

    Homododecamer.3 Publications

    Protein-protein interaction databases

    STRINGi100226.SCO1961

    Chemistry databases

    BindingDBiP15474

    Structurei

    Secondary structure

    1157
    Legend: HelixTurnBeta strandPDB Structure known for this area
    Show more details
    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Turni5 – 7Combined sources3
    Beta strandi10 – 14Combined sources5
    Helixi18 – 20Combined sources3
    Turni21 – 23Combined sources3
    Helixi26 – 29Combined sources4
    Helixi34 – 46Combined sources13
    Turni47 – 49Combined sources3
    Beta strandi52 – 56Combined sources5
    Helixi60 – 73Combined sources14
    Beta strandi75 – 80Combined sources6
    Helixi84 – 87Combined sources4
    Helixi89 – 96Combined sources8
    Beta strandi103 – 109Combined sources7
    Helixi111 – 113Combined sources3
    Helixi116 – 118Combined sources3
    Helixi123 – 125Combined sources3
    Beta strandi128 – 134Combined sources7
    Helixi137 – 150Combined sources14

    3D structure databases

    Select the link destinations:
    PDBei
    RCSB PDBi
    PDBji
    Links Updated
    PDB entryMethodResolution (Å)ChainPositionsPDBsum
    1D0IX-ray1.80A/B/C/D/E/F/G/H/I/J/K/L2-157[»]
    1GTZX-ray1.60A/B/C/D/E/F/G/H/I/J/K/L2-157[»]
    1GU0X-ray2.00A/B/C/D/E/F/G/H/I/J/K/L2-157[»]
    1GU1X-ray1.80A/B/C/D/E/F/G/H/I/J/K/L2-157[»]
    1V1JX-ray2.20A/B/C/D/E/F/G/H/I/J/K/L2-157[»]
    2BT4X-ray1.70A/B/C/D/E/F/G/H/I/J/K/L1-157[»]
    2CJFX-ray1.95A/B/C/D/E/F/G/H/I/J/K/L1-157[»]
    ProteinModelPortaliP15474
    SMRiP15474
    ModBaseiSearch...
    MobiDBiSearch...

    Miscellaneous databases

    EvolutionaryTraceiP15474

    Family & Domainsi

    Region

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Regioni108 – 109Substrate binding2

    Sequence similaritiesi

    Belongs to the type-II 3-dehydroquinase family.Curated

    Phylogenomic databases

    eggNOGiENOG4108Z38 Bacteria
    COG0757 LUCA
    HOGENOMiHOG000217278
    InParanoidiP15474
    KOiK03786
    OMAiCAGIVIN
    OrthoDBiPOG091H03XJ
    PhylomeDBiP15474

    Family and domain databases

    CDDicd00466 DHQase_II, 1 hit
    Gene3Di3.40.50.9100, 1 hit
    HAMAPiMF_00169 AroQ, 1 hit
    InterProiView protein in InterPro
    IPR001874 DHquinase_II
    IPR018509 DHquinase_II_CS
    IPR036441 DHquinase_II_sf
    PANTHERiPTHR21272 PTHR21272, 1 hit
    PfamiView protein in Pfam
    PF01220 DHquinase_II, 1 hit
    PIRSFiPIRSF001399 DHquinase_II, 1 hit
    SUPFAMiSSF52304 SSF52304, 1 hit
    TIGRFAMsiTIGR01088 aroQ, 1 hit
    PROSITEiView protein in PROSITE
    PS01029 DEHYDROQUINASE_II, 1 hit

    Sequencei

    Sequence statusi: Complete.

    Sequence processingi: The displayed sequence is further processed into a mature form.

    P15474-1 [UniParc]FASTAAdd to basket

    « Hide

            10         20         30         40         50
    MPRSLANAPI MILNGPNLNL LGQRQPEIYG SDTLADVEAL CVKAAAAHGG
    60 70 80 90 100
    TVDFRQSNHE GELVDWIHEA RLNHCGIVIN PAAYSHTSVA ILDALNTCDG
    110 120 130 140 150
    LPVVEVHISN IHQREPFRHH SYVSQRADGV VAGCGVQGYV FGVERIAALA

    GAGSARA
    Length:157
    Mass (Da):16,682
    Last modified:January 23, 2007 - v3
    Checksum:i61D9F95C7E2C67EB
    GO

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    AJ001493 Genomic DNA Translation: CAA04787.1
    AL939110 Genomic DNA Translation: CAB38151.1
    PIRiS08196
    T35990
    RefSeqiNP_626225.1, NC_003888.3
    WP_003976858.1, NC_003888.3

    Genome annotation databases

    EnsemblBacteriaiCAB38151; CAB38151; CAB38151
    GeneIDi1097395
    KEGGisco:SCO1961
    PATRICifig|100226.15.peg.1987

    Similar proteinsi

    Entry informationi

    Entry nameiAROQ_STRCO
    AccessioniPrimary (citable) accession number: P15474
    Secondary accession number(s): O33608
    Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 1, 1990
    Last sequence update: January 23, 2007
    Last modified: May 23, 2018
    This is version 141 of the entry and version 3 of the sequence. See complete history.
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programProkaryotic Protein Annotation Program

    Miscellaneousi

    Keywords - Technical termi

    3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

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