methionine

One of the essential sulfur amino acids. Either cysteine or methionine is nutritionally required*. Either may be synthesized from the other, but without one, the other cannot be synthesized.* * Homocysteine would also suffice. Methionine is formed from methylation of homocysteine catalyzed by methionine synthase. It may also be formed from homocysteine & betaine in a reaction catalyzed by betaine homocysteine methyl- transferase. Methionine combines with ATP to yield S-adenosylmethionine (SAM) in a reaction catalyzed by methionine adenosyltransferase. Laboratory: - methionine in specimen - methionine in hair - methionine in body fluid - methionine in amniotic fluid - methionine in blood - methionine in dried blood spot - methionine in serum/plasma - methionine in CSF - methionine in urine - methionine in vitreous fluid

Related

folate metabolism methionine in blood methionine in serum/plasma methionine metabolism (trans-sulfuration pathway) methionine residue (Met, M) methionine/phenylalanine in blood

General

essential amino acid lipotropic sulfur amino acid

Properties

Database Correlations

OMIM 250900 PUBCHEM correlations Kegg map/map00271

References

Stryer Biochemistry WH Freeman & Co, New York, 1988 pg 582

Component-of

alanine/arginine/aspartate/calcium chloride/glucose/glutamate/glycine/histidine/isoleucine/leucine/lysine/magnesium chloride/methionine/phenylalanine/potassium chloride/potassium phosphate/proline/serine/sodium chloride/threonine/tryptophan/tyrosine/valine alanine/arginine/aspartate/cysteine/glutamate/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/sodium acetate/sodium chloride/threonine/tryptophan/tyrosine/valine alanine/arginine/aspartate/cysteine/glutamate/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/tyrosine/valine alanine/arginine/aspartate/glucose/glutamate/glycine/histidine/isoleucine/leucine/lysine/magnesium chloride/methionine/phenylalanine/potassium chloride/proline/serine/sodium chloride/sodium phosphate/threonine/tryptophan/tyrosine/valine alanine/arginine/aspartate/glucose/glutamate/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/tyrosine/valine alanine/arginine/aspartate/glucose/glutamate/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/valine alanine/arginine/aspartate/glutamate/glycine/histidine/isoleucine/leucine/lysine/magnesium chloride/methionine/phenylalanine/potassium chloride/proline/serine/sodium chloride/sodium phosphate/threonine/tryptophan/tyrosine/valine alanine/arginine/aspartate/glutamate/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/tyrosine/valine alanine/arginine/calcium acetate/cysteine/glycerol/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/phosphoric acid/potassium chloride/proline/serine/sodium acetate/sodium chloride/threonine/tryptophan/valine alanine/arginine/calcium acetate/cysteine/glycerol/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/potassium chloride/proline/serine/sodium acetate/sodium chloride/threonine/tryptophan/valine alanine/arginine/calcium chloride/glucose/glycine/histidine/isoleucine/leucine/lysine/magnesium chloride/methionine/phenylalanine/potassium phosphate/proline/serine/sodium acetate/sodium chloride/threonine/tryptophan/tyrosine/valine alanine/arginine/calcium chloride/glucose/glycine/histidine/isoleucine/leucine/magnesium chloride/methionine/phenylalanine/potassium phosphate/proline/serine/sodium acetate/sodium chloride/threonine/tryptophan/tyrosine/valine alanine/arginine/cysteine/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/phosphoric acid/potassium chloride/proline/serine/sodium acetate/sodium chloride/threonine/tyrosine/valine alanine/arginine/cysteine/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/phosphoric 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alanine/arginine/glycine/histidine/isoleucine/leucine/lysine/magnesium chloride/methionine/phenylalanine/potassium chloride/proline/serine/sodium chloride/sodium phosphate/threonine/tryptophan/tyrosine/valine alanine/arginine/glycine/histidine/isoleucine/leucine/lysine/magnesium chloride/methionine/phenylalanine/potassium phosphate/proline/sodium acetate/sodium chloride/threonine/tryptophan/tyrosine/valine alanine/arginine/glycine/histidine/isoleucine/leucine/lysine/magnesium chloride/methionine/phenylalanine/sodium acetate/sodium chloride/threonine/tryptophan/tyrosine/valine alanine/arginine/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/potassium acetate/proline/serine/sodium chloride/threonine/tryptophan/tyrosine/valine alanine/arginine/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/tyrosine/valine alanine/cysteine/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/valine arginine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/threonine/tryptophan/valine cysteine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/sodium chloride/threonine/tryptophan/valine cysteine/inositol/methionine/propionate/urea cysteine/inositol/methionine/urea cysteine/lysine/methionine/superoxide dismutase histidine/isoleucine/leucine/lysine/methionine/phenylalanine/threonine/tryptophan/valine