methionine

(redirected from Methioform)
Also found in: Dictionary, Thesaurus, Encyclopedia.

methionine

 [mĕ-thi´o-nēn]
a sulfur-containing amino acid, one of the essential amino acids, furnishing both methyl groups and sulfur necessary for metabolism.

me·thi·o·nine (Met, M),

(me-thī'ō-nēn),
The l-isomer is a nutritionally essential amino acid and the most important natural source of "active methyl" groups in the body, hence usually involved in methylations in vivo; the dl-form is used as an adjunct in the treatment of liver diseases.

methionine

/me·thi·o·nine/ (Met) (M) (mĕ-thi´ŏ-nēn) a naturally occurring, essential amino acid that furnishes both methyl groups and sulfur necessary for normal metabolism. Labeled with carbon 11, it is used in positron emission tomography for detection of neoplasms.

methionine

(mə-thī′ə-nēn′)
n.
A sulfur-containing essential amino acid, C5H11NO2S, obtained from various proteins or prepared synthetically and used as a dietary supplement and in pharmaceuticals.

methionine (Met)

[methī′ənēn]
an essential amino acid needed for proper growth in infants and for maintenance of nitrogen balance in adults. It is a source for methyl groups and sulfur in the body. It is also administered as adjunctive treatment in liver diseases. See also amino acid, protein.
enlarge picture
Chemical structure of methionine

me·thi·o·nine

(me-thī'ō-nēn)
A nutritionally essential amino acid and the most important natural source of "active methyl" groups in the body, hence usually involved in methylations in vivo.

methionine

An antidote used to treat paracetamol poisoning from overdose. A drug used in combination with paracetamol to protect the liver against the serious damage that is caused by deliberate overdosage. A brand name of the combination is Paradote.
Methionineclick for a larger image
Fig. 221 Methionine . Molecular structure.

methionine (M, Met)

one of 20 AMINO ACIDS common in proteins. It has an ‘R’ group with a nonpolar structure and is relatively insoluble in water. See Fig. 221 . The ISOELECTRIC POINT of methionine is 5.7.

me·thi·o·nine

(M) (me-thī'ō-nēn)
The l-isomer is a nutritionally essential amino acid and the most important natural source of "active methyl" groups in the body.

methionine

(məthī´ənēn´),
n one of the essential amino acids. See also amino acid.

methionine

Met; a sulfur-containing amino acid occurring in proteins, which is an essential component of the diet of animals.

methionine deficiency
exacerbates deficiencies of choline and vitamin B12.
methionine enkephalin
met-enkephalin; see enkephalin.
methionine sulfoximine
the convulsant agent produced in flour by the agene process. Causes hysteria in dogs, ferrets, rabbits and cats, but other species are not affected.