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Tyrosinase

Definition

noun

A copper-containing oxidoreductase enzyme found in plant and animal tissues that catalyzes the oxidation of tyrosine into melanin and other pigments.


Supplement

This enzyme is found in plants and animal tissues where it is involved in the production of brown and black pigments (melanin) through oxidation of tyrosine. The lack of tyrosinase activity is responsible for albinism.


Synonym: monophenol monooxygenase.


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Re: Catechol Oxidase, Polyphenol Oxidase and Tyrosinase

Complete and the full length cDNA sequence of poly phenol oxidase, cDNA from grape Vitis vinifera L., cv Grenache, was found to encode a translated protein of amino acids with an expected molecular weight of ca.kDa and a predicted pI of 6.83. The translated amino acid sequence was 99%, identical to ...

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by aricpole
Thu Apr 22, 2010 6:28 pm
 
Forum: Molecular Biology
Topic: Catechol Oxidase, Polyphenol Oxidase and Tyrosinase
Replies: 6
Views: 7386

Catechol Oxidase, Polyphenol Oxidase and Tyrosinase

Hi, Are Catechol Oxidase, Polyphenol Oxidase and Tyrosinase the same enzyme? Many thanks JT80

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by JTeighty
Tue Apr 20, 2010 9:37 pm
 
Forum: Molecular Biology
Topic: Catechol Oxidase, Polyphenol Oxidase and Tyrosinase
Replies: 6
Views: 7386

The Fiber Disease

... albino phenotype are all a result of mutations that occurred by the insertion of the transposable elements Tol1 (i1) or Tol2 (i4 and ib) into the tyrosinase gene (i locus) (42, 88, 89). Despite a current lack of understanding regarding the multiple insertions of these members of the hobo/Ac/ Tam ...

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by codon blue
Tue Nov 14, 2006 9:12 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 4988400

apple browning

Apple contains iron and when the cut apple expose to air, the enzyme called "tyrosinase" helps to oxidize and turn apple in brown (brown colour is response to reaction occured). However, the apple dipped with lemon juice or sulphur dioxide prevents this reaction ...

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by ankitshah64
Sun Sep 11, 2005 3:22 pm
 
Forum: General Discussion
Topic: apple browning
Replies: 15
Views: 14790


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