tyrosinase

Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.

Related to tyrosinase: tyrosine

ty·ros·i·nase

(tī-rŏs′ə-nās′, -nāz′)

Any of a family of copper-containing enzymes found in animal and plant tissues, fungi, and bacteria, that catalyze the oxidation of phenolic compounds and are responsible for production of the pigment melanin from tyrosine and for the browning of fruits, vegetables, and mushrooms when cut and exposed to air.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tyrosinase

(ˌtaɪrəʊsɪˈneɪz; ˌtɪrəʊ-)

(Biochemistry) an enzyme occurring in many organisms that is a catalyst in the conversion of tyrosine to the pigment melanin; inactivity of this enzyme results in albinism

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ty•ro•si•nase

(ˈtaɪ roʊ sɪˌneɪs, -ˌneɪz, ˈtɪr oʊ-)

n.

an enzyme of plant and animal tissues that catalyzes the aerobic oxidation of tyrosine into melanin and other pigments.

[< French (1896); see tyrosine, -ase]

References in periodicals archive ?

A tyrosinase missense mutation causes albinism in the Wistar rat.

Mutations of TYR and MITF genes are associated with plumage colour phenotypes in geese

Tyrosinase (EC 1.14.18.1) is the key enzyme that acts in the initial step of melanin biosynthesis.

Effect of Vetiveria zizanioides essential oil on melanogenesis in melanoma cells: downregulation of tyrosinase expression and suppression of oxidative stress

Tyrosinase activities are widely distributed in all domains of life from microorganisms to mammals.

Microbial tyrosinases: promising enzymes for pharmaceutical, food bioprocessing, and environmental industry

In mussels, the inclusion of DOPA in byssal thread adhesive proteins is thought to be mediated by a tyrosinase (Guerette et al., 2013).

Catecholic Compounds in Ctenophore Colloblast and Nerve Net Proteins Suggest a Structural Role for DOPA-Like Molecules in an Early-Diverging Animal Lineage

Mushroom tyrosinase, L-tyrosine and koijc acid were obtained from Sigma Aldrich, Johannesburg, RSA.

Biological, phytochemical, and physico-chemical properties of two commercial Nigella sativa seed oils: A comparative analysis

Results of our study are also in conformity with most of the previous studies, which showed female predominance suffering from melasma.2-5 HQ works by inhibiting the tyrosinase and thus prevents the conversion of DOPA to melanin and is also related to tyrosinase destruction and melanosome degradation.

Comparative efficacy of topical 4% hydroquinone vs. 4% hydroquinone plus 10% mandelic acid in the treatment of melasma

Photo inactivation of Agaricus bisporus tyrosinase: Modification of the binuclear copper site.

Effect of Electron-Beam Irradiation on Enzyme Activities in Agaricus brunnescens

Inhibitory effect of morin on tyrosinase: Insights from spectroscopic and molecular docking studies.

[alpha]-Glucosidase Inhibitory Mechanism of Phloridzin

Mushroom tyrosinase inhibition (19) was performed as previously reported with modifications.

Improved antimelanogenesis and antioxidant effects of polysaccharide from Cuscuta chinensis Lam seeds after enzymatic hydrolysis

Inflammatory molecules can also trigger melanin formation, so we are not only inhibiting the tyrosinase activity--at the very heart where melanin is built--but we also interrupt the signaling pathways that trigger melanin formation."

Unlocked: the secret to spotless skin

Tyrosinase inhibition was examined using the method described by Masuda et al.

In Vitro Protection by Crataegus microphylla Extracts Against Oxidative Damage and Enzyme Inhibition Effects/Crataegus microphylla Ekstrelerinin Oksidatif Hasara Karsi In Vitro Koruma ve Enzim Inhibisyonu Etkileri

For this reason, most of these agents are tyrosinase inhibitors.

Current Treatment Approaches for Melasma

Full browser ?

CITE

Site: Follow: Share:

Open / Close