a_01_LowImpB	a_02_HighImpB	a_03_MoreNPC	b_01_LowImpB	b_02_HighImpB	b_03_MoreNPC
CAS
CAS·Ran·GTP
ImpA·CAS·Ran·GTP
ImpB
ImpA
ImpA·ImpB
Ran·GTP
NLS