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Protein

3-phytase A

Gene

phyA

Organism
Aspergillus terreus
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Catalyzes the hydrolysis of inorganic orthophosphate from phytate. Releases 5 of the 6 phosphate groups to yield the end product myo-inositol 2-monophosphate. Specific for phytate.1 Publication

Catalytic activityi

Myo-inositol hexakisphosphate + H2O = 1D-myo-inositol 1,2,4,5,6-pentakisphosphate + phosphate.

Kineticsi

  1. KM=10.6 µM for phytate1 Publication

    pH dependencei

    Optimum pH is 5.5. Active from 2.5 to 7.5 with phytic acid as substrate. The optimum pH is shifted to more acidic values with 4-nitrophenyl phosphate as substrate.1 Publication

    Sites

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Active sitei82 – 821NucleophileBy similarity
    Active sitei362 – 3621Proton donorBy similarity

    GO - Molecular functioni

    Complete GO annotation...

    Keywords - Molecular functioni

    Hydrolase

    Enzyme and pathway databases

    BRENDAi3.1.3.26. 536.
    3.1.3.8. 536.

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    3-phytase A (EC:3.1.3.8)
    Alternative name(s):
    3 phytase A
    Myo-inositol hexakisphosphate phosphohydrolase A
    Myo-inositol-hexaphosphate 3-phosphohydrolase A
    Gene namesi
    Name:phyA
    OrganismiAspergillus terreus
    Taxonomic identifieri33178 [NCBI]
    Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaPezizomycotinaEurotiomycetesEurotiomycetidaeEurotialesAspergillaceaeAspergillus

    Subcellular locationi

    GO - Cellular componenti

    Complete GO annotation...

    Keywords - Cellular componenti

    Secreted

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Signal peptidei1 – 1919By similarityAdd
    BLAST
    Chaini20 – 4664473-phytase APRO_0000023972Add
    BLAST

    Amino acid modifications

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Disulfide bondi31 ↔ 40By similarity
    Disulfide bondi71 ↔ 414By similarity
    Glycosylationi120 – 1201N-linked (GlcNAc...)Sequence Analysis
    Glycosylationi207 – 2071N-linked (GlcNAc...)Sequence Analysis
    Disulfide bondi215 ↔ 465By similarity
    Glycosylationi230 – 2301N-linked (GlcNAc...)Sequence Analysis
    Disulfide bondi264 ↔ 282By similarity
    Glycosylationi339 – 3391N-linked (GlcNAc...)Sequence Analysis
    Glycosylationi352 – 3521N-linked (GlcNAc...)Sequence Analysis
    Glycosylationi376 – 3761N-linked (GlcNAc...)Sequence Analysis
    Disulfide bondi436 ↔ 444By similarity

    Keywords - PTMi

    Disulfide bond, Glycoprotein

    Interactioni

    Subunit structurei

    Monomer.1 Publication

    Structurei

    3D structure databases

    ProteinModelPortaliO00085.
    SMRiO00085. Positions 31-466.
    ModBaseiSearch...
    MobiDBiSearch...

    Family & Domainsi

    Sequence similaritiesi

    Belongs to the histidine acid phosphatase family.Curated

    Keywords - Domaini

    Signal

    Family and domain databases

    Gene3Di3.40.50.1240. 1 hit.
    InterProiIPR000560. His_Pase_superF_clade-2.
    IPR029033. His_PPase_superfam.
    IPR016274. Histidine_acid_Pase_euk.
    [Graphical view]
    PfamiPF00328. His_Phos_2. 1 hit.
    [Graphical view]
    PIRSFiPIRSF000894. Acid_phosphatase. 1 hit.
    SUPFAMiSSF53254. SSF53254. 1 hit.
    PROSITEiPS00616. HIS_ACID_PHOSPHAT_1. 1 hit.
    PS00778. HIS_ACID_PHOSPHAT_2. 1 hit.
    [Graphical view]

    Sequencei

    Sequence statusi: Complete.

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

    O00085-1 [UniParc]FASTAAdd to basket

    « Hide

            10         20         30         40         50
    MGFLAIVLSV ALLFRSTSGT PLGPRGKHSD CNSVDHGYQC FPELSHKWGL
    60 70 80 90 100
    YAPYFSLQDE SPFPLDVPED CHITFVQVLA RHGARSPTHS KTKAYAATIA
    110 120 130 140 150
    AIQKSATAFP GKYAFLQSYN YSLDSEELTP FGRNQLRDLG AQFYERYNAL
    160 170 180 190 200
    TRHINPFVRA TDASRVHESA EKFVEGFQTA RQDDHHANPH QPSPRVDVAI
    210 220 230 240 250
    PEGSAYNNTL EHSLCTAFES STVGDDAVAN FTAVFAPAIA QRLEADLPGV
    260 270 280 290 300
    QLSTDDVVNL MAMCPFETVS LTDDAHTLSP FCDLFTATEW TQYNYLLSLD
    310 320 330 340 350
    KYYGYGGGNP LGPVQGVGWA NELMARLTRA PVHDHTCVNN TLDASPATFP
    360 370 380 390 400
    LNATLYADFS HDSNLVSIFW ALGLYNGTAP LSQTSVESVS QTDGYAAAWT
    410 420 430 440 450
    VPFAARAYVE MMQCRAEKEP LVRVLVNDRV MPLHGCPTDK LGRCKRDAFV
    460
    AGLSFAQAGG NWADCF
    Length:466
    Mass (Da):51,093
    Last modified:July 1, 1997 - v1
    Checksum:i21CDCB559C96AE66
    GO

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    U59805 Genomic DNA. Translation: AAB52507.1.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    U59805 Genomic DNA. Translation: AAB52507.1.

    3D structure databases

    ProteinModelPortaliO00085.
    SMRiO00085. Positions 31-466.
    ModBaseiSearch...
    MobiDBiSearch...

    Protocols and materials databases

    Structural Biology KnowledgebaseSearch...

    Enzyme and pathway databases

    BRENDAi3.1.3.26. 536.
    3.1.3.8. 536.

    Family and domain databases

    Gene3Di3.40.50.1240. 1 hit.
    InterProiIPR000560. His_Pase_superF_clade-2.
    IPR029033. His_PPase_superfam.
    IPR016274. Histidine_acid_Pase_euk.
    [Graphical view]
    PfamiPF00328. His_Phos_2. 1 hit.
    [Graphical view]
    PIRSFiPIRSF000894. Acid_phosphatase. 1 hit.
    SUPFAMiSSF53254. SSF53254. 1 hit.
    PROSITEiPS00616. HIS_ACID_PHOSPHAT_1. 1 hit.
    PS00778. HIS_ACID_PHOSPHAT_2. 1 hit.
    [Graphical view]
    ProtoNetiSearch...

    Publicationsi

    1. "The phytase subfamily of histidine acid phosphatases: isolation of genes for two novel phytases from the fungi Aspergillus terreus and Myceliophthora thermophila."
      Mitchell D.B., Vogel K., Weimann B.J., Pasamontes L., van Loon A.P.G.M.
      Microbiology 143:245-252(1997) [PubMed] [Europe PMC] [Abstract]
      Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA], CHARACTERIZATION.
      Strain: 9A1.
    2. "Biophysical characterization of fungal phytases (myo-inositol hexakisphosphate phosphohydrolases): molecular size, glycosylation pattern, and engineering of proteolytic resistance."
      Wyss M., Pasamontes L., Friedlein A., Remy R., Tessier M., Kronenberger A., Middendorf A., Lehmann M., Schnoebelen L., Roethlisberger U., Kusznir E., Wahl G., Mueller F., Lahm H.-W., Vogel K., van Loon A.P.G.M.
      Appl. Environ. Microbiol. 65:359-366(1999) [PubMed] [Europe PMC] [Abstract]
      Cited for: PROTEIN SEQUENCE OF 29-38 AND 192-200, SUBUNIT.
      Strain: 9A1.
    3. "Biochemical characterization of fungal phytases (myo-inositol hexakisphosphate phosphohydrolases): catalytic properties."
      Wyss M., Brugger R., Kronenberger A., Remy R., Fimbel R., Oesterhelt G., Lehmann M., van Loon A.P.G.M.
      Appl. Environ. Microbiol. 65:367-373(1999) [PubMed] [Europe PMC] [Abstract]
      Cited for: FUNCTION, BIOPHYSICOCHEMICAL PROPERTIES.

    Entry informationi

    Entry nameiPHYA1_ASPTE
    AccessioniPrimary (citable) accession number: O00085
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: January 16, 2004
    Last sequence update: July 1, 1997
    Last modified: April 1, 2015
    This is version 68 of the entry and version 1 of the sequence. [Complete history]
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programFungal Protein Annotation Program

    Miscellaneousi

    Keywords - Technical termi

    Direct protein sequencing

    Documents

    1. SIMILARITY comments
      Index of protein domains and families

    External Data

    Dasty 3

    Similar proteinsi

    Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
    100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
    90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
    50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.