In this paper, recent progresses in model studies of cyclobutane pyrimidine dimer photolyases and (6-4) photoproduct photolyases have been reviewed.

• 评述了环丁烷型嘧啶二聚体光解酶和(6-4)光产物光解酶的模型研究进展，并展望了该领域的发展前景。