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Reviewed, UniProtKB/Swiss-Prot Q08303 (PPOA_SOLLC)

Last modified November 4, 2008. Version 53. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

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Names and origin

Protein namesRecommended name:
    Polyphenol oxidase A, chloroplastic
      Short name=PPO
    EC=1.10.3.1
Alternative name(s):
    Catechol oxidase
OrganismSolanum lycopersicum (Tomato) (Lycopersicon esculentum)
Taxonomic identifier4081 [NCBI]
Taxonomic lineageEukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › asterids › lamiids › Solanales › Solanaceae › Solanoideae › Solaneae › Solanum › Lycopersicon

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Protein attributes

Sequence length630 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceInferred from homology.

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General annotation (Comments)

Function

Catalyzes the oxidation of mono- and o-diphenols to o-diquinones.

Catalytic activity

2 catechol + O(2) = 2 1,2-benzoquinone + 2 H(2)O.

Cofactor

Binds 2 copper ions per subunit By similarity.

Subcellular location

Plastid › chloroplast thylakoid lumen.

Sequence similarities

Belongs to the tyrosinase family.

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Ontologies

Keywords

   Cellular componentChloroplast
Plastid
   DomainTransit peptide
   LigandCopper
Metal-binding
   Molecular functionOxidoreductase
   PTMThioether bond

Gene Ontology (GO)

   Biological processoxidation reduction

Inferred from electronic annotation. Source: UniProtKB-KW

   Cellular componentchloroplast

Inferred from electronic annotation. Source: UniProtKB-KW

   Molecular functioncatechol oxidase activity

Inferred from electronic annotation. Source: EC

copper ion binding

Inferred from electronic annotation. Source: UniProtKB-KW

Complete GO annotation...

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Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Transit peptide1 – 8787Chloroplast By similarity
Chain88 – 630543Polyphenol oxidase A, chloroplastic
PRO_0000035910

Sites

Metal binding1801Copper A By similarity
Metal binding1981Copper A By similarity
Metal binding2071Copper A By similarity
Metal binding3281Copper B By similarity
Metal binding3321Copper B By similarity
Metal binding3701Copper B By similarity

Amino acid modifications

Disulfide bond98 ↔ 114 By similarity
Disulfide bond113 ↔ 181 By similarity
Cross-link184 ↔ 1982'-(S-cysteinyl)-histidine (Cys-His) By similarity

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Sequences

Sequence LengthMass (Da)Tools
Q08303-1 [UniParc].

Last modified February 1, 1996. Version 2.
Checksum: 821F3297879326F1

FASTA63070,616
        10         20         30         40         50         60 
MASLCSNSSS TSLKTPFTSS TTCLSSTPTA SQLFLHGKRN KTFKVSCKVT NTNGNQDETN 

        70         80         90        100        110        120 
SVDRRNVLLG LGGLYGVANA IPLAASAAPT PPPDLSSCNK PKINATTEVP YFCCAPKPDD 

       130        140        150        160        170        180 
MSKVPYYKFP SVTKLRIRPP AHALDEAYIA KYNLAISRMK DLDKTQPDNP IGFKQQANIH 

       190        200        210        220        230        240 
CAYCNGGYSI DGKVLQVHNS WLFFPFHRWY LYFYERILGS LIDDPTFGLP FWNWDHPKGM 

       250        260        270        280        290        300 
RFPPMFDVPG TALYDERRGD QIHNGNGIDL GYFGDQVETT QLQLMTNNLT LMYRQLVTNS 

       310        320        330        340        350        360 
PCPLMSLVDL TLFGSTVEDA GTVENIPHSP VHIWVGTRRG SVLPVGKISN GEDMGNFYSA 

       370        380        390        400        410        420 
GLDPLFYCHH SNVDRMWNEW KATGGKRTDI QNKDWLNSEF FFYDENGNPF KVRVRDCLDT 

       430        440        450        460        470        480 
KKMGYDYHAT ATPWRNFKPK TKASAGKVNT GSIPPESQVF PLAKLDKAIS FSINRPASSR 

       490        500        510        520        530        540 
TQQEKNAQEE VLTFNAIKYD NRDYIRFDVF LNVDNNVNAN ELDKAEFAGS YTSLPHVHRV 

       550        560        570        580        590        600 
GDPKHTATAT LRLAITELLE DIGLEDEDTI AVTLVPKKGD ISIGGVEIKL AIVKLVCVVN 

       610        620        630 
LLTLQLNKDR FCYDSVFVCW FVCLFFNFHV

« Hide

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References

[1]"Organisation of the tomato polyphenol oxidase gene family."
Newman S.M., Eannetta N.T., Yu H., Prince J.P., de Vicente M.C., Tanksley S.D., Steffens J.C.
Plant Mol. Biol. 21:1035-1051(1993) [PubMed: 8098228] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
Strain: cv. VFNT Cherry.

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Cross-references

Sequence databases

Z12833 Genomic DNA. Translation: CAA78295.1.
PIRS33539.

3D structure databases

ModBaseSearch...

Family and domain databases

InterProIPR008922. Di-copper_centre.
IPR016213. Polyphenol_Oxase_pln.
IPR002227. Tyrosinase.
[Graphical view]
Gene3DG3DSA:1.10.1280.10. Di-copper_centre. 1 hit.
PfamPF00264. Tyrosinase. 1 hit.
[Graphical view]
PIRSFPIRSF000290. PPO_plant. 1 hit.
PRINTSPR00092. TYROSINASE.
PROSITEPS00497. TYROSINASE_1. 1 hit.
PS00498. TYROSINASE_2. 1 hit.
[Graphical view]
ProtoNetSearch...

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Entry information

Entry namePPOA_SOLLC
AccessionPrimary (citable) accession number: Q08303
Entry history
Integrated into UniProtKB/Swiss-Prot: November 1, 1995
Last sequence update: February 1, 1996
Last modified: November 4, 2008
This is version 53 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectPPAP (Plant Proteome Annotation Project)

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Relevant documents

SIMILARITY comments

Index of protein domains and families

Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents