(biochemistry, organic chemistry) A sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms.
Used in a Sentence
methionine
Definitions, parts of speech, synonyms, and sentence examples for methionine.
Editorial note
Methionine restriction by avoiding methionine rich foods doesn't strike me as harmful at all, since there's still plenty in even a vegan diet.
Examples17
Definitions2
Parts of speech1
Quick take
(biochemistry, organic chemistry) A sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms.
Meaning at a glance
The clearest senses and uses of methionine gathered in one view.
(biochemistry, organic chemistry) The L-form thereof, a lipotropic molecule widely occurring in living organisms and found in most protein; in humans it is an essential amino acid.
Definitions
Core meanings and parts of speech for methionine.
noun
(biochemistry, organic chemistry) A sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms.
noun
(biochemistry, organic chemistry) The L-form thereof, a lipotropic molecule widely occurring in living organisms and found in most protein; in humans it is an essential amino acid.
Example sentences
Methionine restriction by avoiding methionine rich foods doesn't strike me as harmful at all, since there's still plenty in even a vegan diet.
I don't think I said (and know that I didn't mean to imply) that excess methionine causes cancer.
One of the proteins that the potato lacks relatively is methionine; a large active adult man needs perhaps 1 - 2 gram of methionine per day.
In 2005, the below paper was published showing life extension in mice allegedly due to methionine restriction.
Rice protein is high in the sulfur-containing amino acids, cysteine and methionine, but low in lysine.
And that's on far far more solid ground than methionine as a cancer risk.
Sure, soybean is holding up in its own way but it: - lacks methionine.
Potato protein quality is fairly good relative to most plant sources but still deficient in certain essential amino acids, mainly cysteine and methionine.
A cell's addiction to methionine is an effect of cancer, and restricting methionine can be potentially be used to treat cells that are already cancerous, but there's no thought on how this could possible cause cancer.
If they don't get enough methionine they eat each other's feathers, not just the discarded feathers (which left on their own they do normally).
Dump a bunch of methionine in cells and they're not going to develop cancer, as far as anything I've ever seen.
If you eat foods with low amounts of the amino acids methionine and leucine, you could significantly reduce age-related diseases and the risk for certain cancers.
Quote examples
Wikipedia's disclaimers on that: "Cysteine can usually be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available."
"AUA" codes for isoleucine in most organisms but for methionine in vertebrate mitochondrial mRNA.
Proper noun examples
Methionine availability is much more like the Warburg Effect [1], an effect where cells mostly perform anaerobic instead of aerobic metabolism.
Methionine is an essential amino acid that is one of 2 that is used for the start codon for DNA transcription.
Methionine is very hard to get solely from plant sources.
Frequently asked questions
Short answers drawn from the clearest meanings and examples for this word.
How do you use methionine in a sentence?
Methionine restriction by avoiding methionine rich foods doesn't strike me as harmful at all, since there's still plenty in even a vegan diet.
What does methionine mean?
(biochemistry, organic chemistry) A sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms.
What part of speech is methionine?
methionine is commonly used as noun.