methionine


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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

(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.

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.
References in periodicals archive ?
Similarly, combining methionine restriction with radiation therapy in the case of the soft tissue sarcoma reduced tumour growth.
After a 24-h interval, cells were treated with different concentrations (100 to 500 [micro]g/mL) of nanoemulsified AAs (methionine and cysteine).
Methionine is a sulfur containing, essential amino acid in human body.
During this period, the increasing dietary methionine + cysteine: lysine ratio resulted in a linear increase (P<0.01) of feed intake (FI=16.572+25.07X; [R.sup.2]=0.88; Table 2).
Conversion of Indigo Carmine to Isatin Sulfonate in the Presence of Singlet Oxygen and Methionine or Methionine Sulfoxide.
In the experiments conducted to date, the methionine content of fox diets ranged from 4.0 to 10.0 g kg-1 feed DM (Lorek et al., 2002a; Dahlman et al., 2002a,b, 2003, 2004; Matusevicius et al., 2004, Gugolek et al., 2012).
We found that the two diabetic groups without taking SAA treatment (DM (control) and DM (methionine)) exhibited increased PWd (58.5%, P <0.01; 58.2%, P <0.05), PWs (31.6%, P <0.05; 32.5%, P <0.05), LVSd (38.1%, P <0.05; 25.4%, P <0.001), and LV mass (49.0%, P <0.001; 31.7%, P <0.01) at the end of intervention period when compared to their baseline values (Table 2).
(27) Alterations in hepatic methionine metabolism due to chronic alcohol consumption have been correlated with the pathogenesis of alcoholic liver disease.
It can be concluded that methionine and lysine supplementation had a positive effect on milk yield and milk composition (milk protein, solid not fat, total solids and lactose).
Homocysteine is a metabolic product of methionine metabolism.
Although most nutrients required by the immune system are present in the diet in sufficient concentrations, there is evidence that increased dietary supplementation of certain nutrients such as methionine above the optimal level for growth is of benefit to immune response and maximum performance/productivity [1].