DepartmentofMolecularVirology;
ShanghaiMedicalCollege;
FudanUniversity;
Shanghai200032;
China;
InstituteofBiochemistryandCellBiology;
CAS;
Shanghai20003l;
China;
StateKeyLaboratoryofGenetics;
FudanUniversitySchoolofLifeScience;
Shanghai200433;
China;