Retinoblastoma protein

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Retinoblastoma protein (pRb) is a tumour suppressor protein which acts as a cell cycle checkpoint at G1 phase. pRb prevents progression of damaged cells from G1 phase to S phase of cell cycle to disable abnormal cell replication which might develop benign or malignant tumour.[1][2]


  1. Goodrich DW, Wang NP, Qian YW, Lee EY, Lee WH (November 1991). "The retinoblastoma gene product regulates progression through the G1 phase of the cell cycle". Cell. 67 (2): 293–302
  2. Emmi Rotgers1, Mirja Nurmio1, Sheyla Cisneros-Montalvo and Jorma Toppari1 University of Turku, Turku, Finland (April 2, 2016)Endocrine Society's 98th Annual Meeting and Expo, April 1–4, 2016 - Boston LBSat-11: Retinoblastoma Protein Negatively Regulates E2F3 Transcription Factor to Maintain Adult Sertoli Cell Quiescence
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