Plk1-interacting checkpoint helicase (PICH ) is an essential component of the spindle assembly checkpoint (Baumann, C., et al. (2007). Cell 128:101–114). This protein is an ATPase family SNF2 member, and serves as a binding partner and substrate for Plk1. When PICH is phosphorylated, it retrieves Plk1 which serves to mediate the localization of PICH. As a DNA helicase, PICH gathers at kinetochores and centromeres during prometaphase, acting as a necessary part of the spindle assembly checkpoint by recruiting MAD2 and mediating chromatin centromeric tension. Depleted PICH results in the cancellation of the spindle checkpoint causing large scale missegregation of the chromosome.
ERCC6L; excision repair cross-complementing rodent repair deficiency, complementation group 6-like; DNA excision repair protein ERCC-6-like; FLJ20105; PICH; PLK1 interacting checkpoint helicase; tumor antigen BJ-HCC-15; SNF2/RAD54 family protein; ATP-dependent helicase ERCC6-like; excision repair protein ERCC6-like; Plk1-interacting checkpoint helicase; excision repair cross-complementing rodent repair deficiency complementation group 6 - like; MGC131695; excision repair cross-complementation group 6-like; fc22h03; wu:fc22h03; si:ch211-278b8.3; excision repair cross-complementing rodent repair deficiency, complementation gr