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Protein

D-tagatose-1,6-bisphosphate aldolase subunit KbaY

Gene

kbaY

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Catalytic subunit of the tagatose-1,6-bisphosphate aldolase KbaYZ, which catalyzes the reversible aldol condensation of dihydroxyacetone phosphate (DHAP or glycerone-phosphate) with glyceraldehyde 3-phosphate (G3P) to produce tagatose 1,6-bisphosphate (TBP). Requires KbaZ subunit for full activity and stability.2 Publications

Miscellaneous

In contrast to E.coli strains C and EC3132, K-12 strains cannot grow on N-acetylgalactosamine and D-galactosamine, because they carry a deletion and thus lack active PTS systems specific for these compounds. Therefore, KbaYZ in K-12 strains is not involved in the degradation of these compounds.

Catalytic activityi

D-tagatose 1,6-bisphosphate = glycerone phosphate + D-glyceraldehyde 3-phosphate.1 Publication

Cofactori

Zn2+Note: Binds 1 zinc ion per subunit.

Kineticsi

The catalytic efficiency measured with tagatose-1,6-bisphosphate as substrate is 340-fold higher than that with fructose-1,6-bisphosphate.
  1. KM=0.26 mM for tagatose-1,6-bisphosphate1 Publication
  2. KM=1.3 mM for fructose-1,6-bisphosphate1 Publication

    Pathwayi: D-tagatose 6-phosphate degradation

    This protein is involved in step 2 of the subpathway that synthesizes D-glyceraldehyde 3-phosphate and glycerone phosphate from D-tagatose 6-phosphate.
    Proteins known to be involved in the 2 steps of the subpathway in this organism are:
    1. no protein annotated in this organism
    2. D-tagatose-1,6-bisphosphate aldolase subunit GatZ (gatZ), D-tagatose-1,6-bisphosphate aldolase subunit GatY (gatY), D-tagatose-1,6-bisphosphate aldolase subunit KbaY (kbaY), D-tagatose-1,6-bisphosphate aldolase subunit KbaZ (kbaZ)
    This subpathway is part of the pathway D-tagatose 6-phosphate degradation, which is itself part of Carbohydrate metabolism.
    View all proteins of this organism that are known to be involved in the subpathway that synthesizes D-glyceraldehyde 3-phosphate and glycerone phosphate from D-tagatose 6-phosphate, the pathway D-tagatose 6-phosphate degradation and in Carbohydrate metabolism.

    Sites

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Active sitei82Proton donor1 Publication1
    Metal bindingi83Zinc; catalytic1 Publication1
    Metal bindingi180Zinc; catalytic1 Publication1
    Binding sitei181Dihydroxyacetone phosphate; via amide nitrogen1
    Metal bindingi208Zinc; catalytic1 Publication1

    GO - Molecular functioni

    • identical protein binding Source: EcoCyc
    • tagatose-bisphosphate aldolase activity Source: EcoCyc
    • zinc ion binding Source: EcoCyc

    GO - Biological processi

    Keywordsi

    Molecular functionLyase
    LigandMetal-binding, Zinc

    Enzyme and pathway databases

    BioCyciEcoCyc:TAGAALDOL1-MONOMER.
    MetaCyc:TAGAALDOL1-MONOMER.
    BRENDAi4.1.2.40. 2026.
    SABIO-RKiP0AB74.
    UniPathwayiUPA00704; UER00716.

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    D-tagatose-1,6-bisphosphate aldolase subunit KbaY (EC:4.1.2.40)
    Short name:
    TBPA
    Short name:
    TagBP aldolase
    Alternative name(s):
    D-tagatose-bisphosphate aldolase class II
    Ketose 1,6-bisphosphate aldolase class II
    Tagatose-bisphosphate aldolase
    Gene namesi
    Name:kbaY
    Synonyms:agaY, kba, yraC
    Ordered Locus Names:b3137, JW3106
    OrganismiEscherichia coli (strain K12)
    Taxonomic identifieri83333 [NCBI]
    Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
    Proteomesi
    • UP000000318 Componenti: Chromosome
    • UP000000625 Componenti: Chromosome

    Organism-specific databases

    EcoGeneiEG12768. kbaY.

    Subcellular locationi

    GO - Cellular componenti

    • cytosol Source: EcoCyc

    Pathology & Biotechi

    Chemistry databases

    DrugBankiDB03026. Phosphoglycolohydroxamic Acid.

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    ChainiPRO_00001787631 – 286D-tagatose-1,6-bisphosphate aldolase subunit KbaYAdd BLAST286

    Proteomic databases

    PaxDbiP0AB74.
    PRIDEiP0AB74.

    Interactioni

    Subunit structurei

    Homotetramer. Forms a complex with KbaZ.2 Publications

    GO - Molecular functioni

    • identical protein binding Source: EcoCyc

    Protein-protein interaction databases

    BioGridi4261155. 23 interactors.
    DIPiDIP-47961N.
    IntActiP0AB74. 7 interactors.
    MINTiMINT-1279079.
    STRINGi316385.ECDH10B_3310.

    Structurei

    Secondary structure

    1286
    Legend: HelixTurnBeta strandPDB Structure known for this area
    Show more details
    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Helixi7 – 16Combined sources10
    Beta strandi20 – 24Combined sources5
    Helixi28 – 41Combined sources14
    Beta strandi46 – 49Combined sources4
    Helixi53 – 56Combined sources4
    Helixi59 – 72Combined sources14
    Beta strandi77 – 84Combined sources8
    Helixi87 – 95Combined sources9
    Beta strandi100 – 103Combined sources4
    Helixi110 – 126Combined sources17
    Beta strandi130 – 136Combined sources7
    Helixi157 – 167Combined sources11
    Beta strandi170 – 174Combined sources5
    Helixi191 – 200Combined sources10
    Beta strandi205 – 207Combined sources3
    Helixi215 – 223Combined sources9
    Beta strandi226 – 231Combined sources6
    Helixi233 – 249Combined sources17
    Helixi256 – 278Combined sources23

    3D structure databases

    Select the link destinations:
    PDBei
    RCSB PDBi
    PDBji
    Links Updated
    PDB entryMethodResolution (Å)ChainPositionsPDBsum
    1GVFX-ray1.45A/B1-286[»]
    ProteinModelPortaliP0AB74.
    SMRiP0AB74.
    ModBaseiSearch...
    MobiDBiSearch...

    Miscellaneous databases

    EvolutionaryTraceiP0AB74.

    Family & Domainsi

    Region

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Regioni209 – 211Dihydroxyacetone phosphate binding3
    Regioni230 – 233Dihydroxyacetone phosphate binding4

    Sequence similaritiesi

    Phylogenomic databases

    eggNOGiENOG4105D2N. Bacteria.
    COG0191. LUCA.
    HOGENOMiHOG000227793.
    InParanoidiP0AB74.
    KOiK08302.
    PhylomeDBiP0AB74.

    Family and domain databases

    Gene3Di3.20.20.70. 1 hit.
    HAMAPiMF_01293. TagBP_aldolase_KbaY. 1 hit.
    InterProiView protein in InterPro
    IPR013785. Aldolase_TIM.
    IPR000771. FBA_II.
    IPR023788. TagBP_ald_KbaY.
    IPR011288. TagBP_ald_KbaY/GatY.
    PfamiView protein in Pfam
    PF01116. F_bP_aldolase. 1 hit.
    PIRSFiPIRSF001359. F_bP_aldolase_II. 1 hit.
    TIGRFAMsiTIGR00167. cbbA. 1 hit.
    TIGR01858. tag_bisphos_ald. 1 hit.
    PROSITEiView protein in PROSITE
    PS00602. ALDOLASE_CLASS_II_1. 1 hit.
    PS00806. ALDOLASE_CLASS_II_2. 1 hit.

    Sequencei

    Sequence statusi: Complete.

    P0AB74-1 [UniParc]FASTAAdd to basket

    « Hide

            10         20         30         40         50
    MSIISTKYLL QDAQANGYAV PAFNIHNAET IQAILEVCSE MRSPVILAGT
    60 70 80 90 100
    PGTFKHIALE EIYALCSAYS TTYNMPLALH LDHHESLDDI RRKVHAGVRS
    110 120 130 140 150
    AMIDGSHFPF AENVKLVKSV VDFCHSQDCS VEAELGRLGG VEDDMSVDAE
    160 170 180 190 200
    SAFLTDPQEA KRFVELTGVD SLAVAIGTAH GLYSKTPKID FQRLAEIREV
    210 220 230 240 250
    VDVPLVLHGA SDVPDEFVRR TIELGVTKVN VATELKIAFA GAVKAWFAEN
    260 270 280
    PQGNDPRYYM RVGMDAMKEV VRNKINVCGS ANRISA
    Length:286
    Mass (Da):31,294
    Last modified:November 8, 2005 - v1
    Checksum:iCAA42DF05C2B918B
    GO

    Mass spectrometryi

    Molecular mass is 31165.9±2.95 Da from positions 2 - 286. Determined by ESI. 1 Publication

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    U18997 Genomic DNA. Translation: AAA57940.1.
    U00096 Genomic DNA. Translation: AAC76171.1.
    AP009048 Genomic DNA. Translation: BAE77183.1.
    PIRiE65103.
    RefSeqiNP_417606.1. NC_000913.3.
    WP_000022766.1. NZ_LN832404.1.

    Genome annotation databases

    EnsemblBacteriaiAAC76171; AAC76171; b3137.
    BAE77183; BAE77183; BAE77183.
    GeneIDi947644.
    KEGGiecj:JW3106.
    eco:b3137.
    PATRICifig|1411691.4.peg.3593.

    Similar proteinsi

    Entry informationi

    Entry nameiKBAY_ECOLI
    AccessioniPrimary (citable) accession number: P0AB74
    Secondary accession number(s): P42908, Q2M973
    Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 8, 2005
    Last sequence update: November 8, 2005
    Last modified: August 30, 2017
    This is version 97 of the entry and version 1 of the sequence. See complete history.
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programProkaryotic Protein Annotation Program

    Miscellaneousi

    Keywords - Technical termi

    3D-structure, Complete proteome, Reference proteome

    Documents

    1. Escherichia coli
      Escherichia coli (strain K12): entries and cross-references to EcoGene
    2. PATHWAY comments
      Index of metabolic and biosynthesis pathways
    3. PDB cross-references
      Index of Protein Data Bank (PDB) cross-references
    4. SIMILARITY comments
      Index of protein domains and families