Definition: In chemistry, a disulphide bond is an intermolecular hydrogen bonding between two amino acids. It's formed by sharing one or more sulfur atoms with another amino acid group (usually Lysine). This type of bond occurs commonly in proteins and is crucial for protein function. The term 'disulfide' is derived from the Greek word "dis" meaning divide, and "sulfur" as it contains the sulfur atom on the other side of the hydrogen bonding.
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