cysteine

Introduction

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.

More general terms

• sulfur amino acid
• thiol; sulhydryl compound; mercaptan

More specific terms

• cystine
• selenocysteine
• sulfocysteine

Additional terms

• cysteine residue (Cys, C)
• gamma glutamyl cycle
• methionine metabolism (trans-sulfuration pathway)

Component of

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

Database

• Kegg: http://www.genome.jp/dbget-bin/www_bget?
• PubChem: http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=594
• PubChem: http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5862
• PubChem: http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=60960