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RB1CC1, also named as RBICC, is implicated in the regulation of RB1 expression and functions as a DNA-binding transcription factor. It is a potent regulator of the RB1 pathway and a mediator that plays a crucial role in muscular differentiation[PMID:15968549 ]. Its expression is, thus, a prerequisite for myogenic differentiation. Involved in autophagy. RB1CC1 is required for autophagosome formation [PMID: 19258318]. It is probably involved in the tumorigenesis of breast cancer[PMID: 14533007]. RB1CC1 is frequently mutated in breast cancer and shows characteristics of a classical tumor suppressor gene[PMID: 21602932]. The immunogen of this antibody is C-terminal 154aa of RB1CC1.