Previously unknown type of protein crosslink discovered

Molecular crosslinks known as disulfides stabilize the 3D structures of many proteins, and sometimes regulate protein function. But disulfides are not alone - another type of regulatory protein crosslink has been discovered. A covalent linkage between cysteine and lysine residues in a protein.

Automated summary

Molecular crosslinks like disulfides stabilize protein structures and regulate function, but a new type of regulatory protein crosslink involving a covalent linkage between cysteine and lysine residues has been discovered.