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Extra-uterine pregnancy
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Xerophile
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Peas
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Plain text
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Migration
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Lacunar circulation
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Perineum
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Endometrium
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Eccentric
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Calcium
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Southwest European nase
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Kelvin's postulate
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Recurrence
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Sento
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Top plate
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Great Red Spot
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Micral
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Greengage
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Roziere balloon
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Parsnip
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Protease inhibitor
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Plasticity
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Crabeater seal
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EER
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Bioavailability
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Dyspraxia
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Activation
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GMES
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Wolframite
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Metastable
Cysteine
Cysteine (Cys, C) is one of the 22 amino acids present in proteins.
Structure of cysteine
Like all of the amino acids, cysteine has two functional groups: a carboxyl group (COOH) and an amine group (NH2). It has the following side chain: -CH2-SH (a thiol group).
Cysteine is a hydrophobic amino acid.
Function of cysteine
Cysteine is not an essential amino acid as it can be produced by the body from serine and methionine.
It is involved in the synthesis of melanin.
Cysteine is involved in the formation of disulphide bridges between two sulphur atoms in the same protein or in two adjacent proteins.
Cysteine is an amino acid containing a sulphur atom (carbon atom in black, oxygen in red, nitrogen in blue, hydrogen in white, and sulphur in yellow). © Photohound, public domain
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