"Depletion of SUR-8 decreased the interaction of PER and PP1-87B which supports the role of SUR-8 as a scaffold protein. Interestingly the interaction between SUR-8 and PER is temporally regulated: SUR-8 has more binding to PER at night than morning. Thus our results indicate that SUR-8 interacts with PP1-87B to control PER stability to regulate circadian rhythms."xsd:string