Physical interaction of the retinoblastoma protein with human D cyclin

Article Abstract:

The complexes formed by cyclins D1 and D3 with the retinoblastoma protein (pRb) are similar to that formed by several oncoproteins. These complexes are also disrupted by the adenovirus E1A oncoprotein and derived peptides. Moreover, it was found that these interactions are distinct from that of cyclins A and E with pRb, which can induce pRb hyperphosphorylation. Cyclin D1 activity may also be regulated by its association with pRb.

Author: Weinberg, Robert A., Reed, Steven I., Dowdy, Steven F., Arnold, Andrew, Hinds, Philip W., Louie, Kenway
Phosphorylation, Cell proliferation

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Interaction of myogenic factors and the retinoblastoma protein mediates muscle cell commitment and differentiation

Article Abstract:

The role of the tumor suppressor retinoblastoma protein (pRB) in muscle cell differentiation and development was investigated. The results showed that pRB interacts with MyoD to induce cell cycle arrest and in the production and maintenance of the terminally differentiated phenotype of muscle cells. The interaction between MyoD and pRB involves a portion of the pocket and the basic helix-loop-helix domains, respectively.

Author: Nadal-Ginard, Bernardo, Kaushal, Sunjay, Wei Gu, Schneider, Jay W., Condorelli, Gianluigi, Mahdavi, Vijak
Cell differentiation, Muscle cells

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Stem cell research goes underground: The RETINOBLASTOMA-RELATED gene in root development

Article Abstract:

A gene called RETINOBLASTOMA-RELATED (RBR), first discovered in mammalian systems through its involvement in oncogenesis, is important for the regulation of stem cell maintenance in plants. Data suggest that suppression of RBR function causes an increase in the number of stem cells in the root, which is likely due to prolonged maintenance of stem cell identity.

Author: Benfey, Philip N., Dinneny, Jose R.
Science & research, Carcinogenesis, Stem cell research

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Subjects list: Research, Retinoblastoma
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