Boc-Cys-OH (CAS 20887-95-0)

Boc-Cys-OH, formally known as N-tert-butoxycarbonyl-L-cysteine, is a derivative of the amino acid cysteine, distinguished by the presence of a tert-butoxycarbonyl (Boc) protective group. This modification is pivotal in peptide synthesis, as it protects the amine group on the cysteine residue from undesired reactions during the synthesis process, ensuring that the amino acid can be correctly incorporated into peptides without interference. The protective Boc group can be removed under mild acidic conditions, allowing the free amine to participate in subsequent peptide bonding without affecting the integrity of the peptide backbone or the side chain functionality. This characteristic makes Boc-Cys-OH an invaluable tool in the field of biochemistry and molecular biology, particularly in the synthesis of peptides for research into protein structure and function, where precise assembly of amino acid sequences is crucial. Its use facilitates the exploration of protein-protein interactions, enzyme mechanisms, and the role of specific peptides in biological processes, making it a cornerstone in the toolkit for researchers delving into the complexities of biological systems and molecular engineering.