Expresses phosphorylation site mutant (T610A/S613A) per polypeptide.
Compared with wild-type, perT610A.S613A.T:Ivir\HA1,T:Zzzz\His6 expression leads to increased period length in per01 genetic background.
perT610A.S613A.Tag:HA,Tag:polyHis fails to rescue per01