Ultraviolet light can form crosslinks between adjacent bases in DNA, leading to mutations when the DNA is replicated. This structure includes an enzyme that recognizes thymine dimers and breaks the crosslink.PDB ID: 1TEZ
Crystal structure of a photolyase bound to a CPD-like DNA lesion after in situ repair
Mees, A., Klar, T., Gnau, P., Hennecke, U., Eker, A.P.M., Carell, T., Essen, L.-O.
Journal: (2004) Science 306: 1789-1793