Premium
Dissecting functions of the retinoblastoma tumor suppressor and the related pocket proteins by integrating genetic, cell biology, and electrophoretic techniques
Author(s) -
Hansen Klaus,
Lukas Jiri,
Holm Karin,
Kjerulff Anne Arnt,
Bartek Jiri
Publication year - 1999
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/(sici)1522-2683(19990201)20:2<372::aid-elps372>3.0.co;2-r
Subject(s) - biology , e2f , retinoblastoma , retinoblastoma protein , suppressor , microbiology and biotechnology , transcription factor , cell cycle , cell fate determination , serine , cell growth , cancer cell , kinase , phosphorylation , cell , genetics , cancer , gene
The members of the “pocket protein” family, comprising the retinoblastoma tumor suppressor (pRB) and its relatives, p107 and p130, negatively regulate cell proliferation and modulate fundamental biological processes including embryonic development, differentiation, homeostatic tissue renewal, and defense against cancer. The large, multidomain pocket proteins act by binding a plethora of cell fate‐determining and growth‐stimulatory proteins, the most prominent of which are the E2F/DP transcription factors. These protein‐protein interactions are in turn regulated by carefully orchestrated phosphorylation events on multiple serine and threonine residues of pRB, p107, and p130, events which are carried out, at least in part, by the cyclin‐dependent kinases that form the key elements of the cell cycle machinery. Here we discuss the recently obtained new insights into the diverse functions of the pRB family, and show examples of how integration of genetic, cell biology, and a range of electrophoretic approaches help to advance our understanding of the biological roles played by the pocket proteins in both normal and cancer cells.