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P85026

- PPO_ZINOF

UniProt

P85026 - PPO_ZINOF

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Protein

Polyphenol oxidase

Gene
N/A
Organism
Zingiber officinale (Ginger) (Amomum zingiber)
Status
Reviewed - Annotation score: 3 out of 5- Experimental evidence at protein leveli

Functioni

Catalyzes the oxidation of mono- and o-diphenols to o-diquinones.1 Publication

Catalytic activityi

2 catechol + O2 = 2 1,2-benzoquinone + 2 H2O.1 Publication

Cofactori

Cu2+By similarityNote: Binds 2 copper ions per subunit.By similarity

pH dependencei

Optimum pH is 4.5. Active from pH 3.0 to 8.0. The activity decreases sharply above pH 7.5.1 Publication

Temperature dependencei

Optimum temperature is 60 degrees Celsius. There is only a slight decrease in activity at 75 degrees Celsius and a sharp decrease in activity at 90 degrees Celsius.1 Publication

GO - Molecular functioni

  1. catechol oxidase activity Source: UniProtKB-EC
  2. metal ion binding Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Ligandi

Copper, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Polyphenol oxidase (EC:1.10.3.1)
Short name:
PPO
Alternative name(s):
Catechol oxidase
OrganismiZingiber officinale (Ginger) (Amomum zingiber)
Taxonomic identifieri94328 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaZingiberalesZingiberaceaeZingiber

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – ›10›10Polyphenol oxidasePRO_0000259621

Post-translational modificationi

Glycosylated.1 Publication

Expressioni

Tissue specificityi

Expressed in the rhizome. Not detected in leaves.1 Publication

Developmental stagei

Expressed throughout rhizome development.1 Publication

Interactioni

Subunit structurei

Homodimer.1 Publication

Family & Domainsi

Sequence similaritiesi

Belongs to the tyrosinase family.1 Publication

Sequencei

Sequence statusi: Fragment.

P85026-1 [UniParc]FASTAAdd to Basket

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        10
EQGVGGDDGL
Length:10
Mass (Da):946
Last modified:October 31, 2006 - v1
Checksum:i38286BAAA87862C8
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Non-terminal residuei10 – 1011 Publication

Cross-referencesi

3D structure databases

ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Family and domain databases

ProtoNeti Search...

Publicationsi

  1. "Purification and characterization of a polyphenol oxidase from the rhizome of Zingiber officinale."
    Joseph A., Thayumanavan B., Manickam A., Panicker P.R.
    Submitted (SEP-2006) to UniProtKB
    Cited for: PROTEIN SEQUENCE, FUNCTION, CATALYTIC ACTIVITY, BIOPHYSICOCHEMICAL PROPERTIES, SUBUNIT, TISSUE SPECIFICITY, DEVELOPMENTAL STAGE, GLYCOSYLATION.
    Tissue: Rhizome1 Publication.

Entry informationi

Entry nameiPPO_ZINOF
AccessioniPrimary (citable) accession number: P85026
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 31, 2006
Last sequence update: October 31, 2006
Last modified: November 26, 2014
This is version 22 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Direct protein sequencing

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3