cysteine

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. Formed from cleavage of cystathionine catalyzed by cystathionase.

Related

cysteine in serum/plasma cysteine residue (Cys, C) gamma glutamyl cycle methionine metabolism (trans-sulfuration pathway)

Specific

cystine selenocysteine sulfocysteine

General

sulfur amino acid thiol; sulhydryl compound; mercaptan

Properties

Database Correlations

PUBCHEM correlations Kegg map/map00272

References

Stryer Biochemistry WH Freeman & Co, New York, 1988 pg 583

Component-of

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/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/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 acid/proline/serine/threonine/tryptophan/valine alanine/arginine/cysteine/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/potassium chloride/proline/serine/sodium acetate/sodium chloride/threonine/tyrosine/valine alanine/arginine/cysteine/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/valine alanine/arginine/cysteine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/valine alanine/cysteine/glycine/histidine/isoleucine/leucine/lysine/methionine/phenylalanine/proline/serine/threonine/tryptophan/valine biotin/cysteine/silicon biotin/cysteine/silicon dioxide 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