L-tyrosine
Sign in to savethumb|Tyrosine ball and stick model spinning -Tyrosine or tyrosine (symbol Tyr or Y) or 4-hydroxyphenylalanine is one of the 20 standard amino acids that are used by cells to synthesize proteins. It is a conditionally essential amino acid with a polar side group. The word "tyrosine" is from the Greek tyrós, meaning cheese, as it was first discovered in 1846 by German chemist Justus von Liebig in the protein casein from cheese. It is called tyrosyl when referred to as a functional group or side chain. While tyrosine is generally classified as a hydrophobic amino acid, it is more hydrophilic tha
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L-tyrosine is one of the 20 standard amino acids that cells use to build proteins, and it was first discovered in cheese in 1846. Your body can produce tyrosine on its own, making it a "conditionally essential" amino acid, meaning you only need to get it from food or supplements under certain conditions.
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Article
14 sectionsContents
- Functions
- Dietary requirements and sources
- Biosynthesis
- Metabolism
- Phosphorylation and sulfation
- Precursor to neurotransmitters and hormones
- Precursor to other compounds
- Degradation
- Ortho- and meta-tyrosine
- Medical use
- Industrial synthesis
- See also
- References
- External links
thumb|Tyrosine ball and stick model spinning -Tyrosine or tyrosine (symbol Tyr or Y) or 4-hydroxyphenylalanine is one of the 20 standard amino acids that are used by cells to synthesize proteins. It is a conditionally essential amino acid with a polar side group. The word "tyrosine" is from the Greek tyrós, meaning cheese, as it was first discovered in 1846 by German chemist Justus von Liebig in the protein casein from cheese. It is called tyrosyl when referred to as a functional group or side chain. While tyrosine is generally classified as a hydrophobic amino acid, it is more hydrophilic than phenylalanine. It is encoded by the codons UAC and UAU in messenger RNA.
The one-letter symbol Y was assigned to tyrosine for being alphabetically nearest of those letters available. Note that T was assigned to the structurally simpler threonine, U was avoided for its similarity with V for valine, W was assigned to tryptophan, while X was reserved for undetermined or atypical amino acids. The mnemonic tYrosine was also proposed.
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4-Hydroxyphenyl compoundsAlpha-Amino acidsAromatic amino acidsCarbonic anhydrase activatorsChemical articles having a data pageChemical articles with multiple compound IDsDopamine agonistsECHA InfoCard ID from WikidataGlucogenic amino acidsKetogenic amino acidsMonoamine precursorsMultiple chemicals in an infobox that need indexing