COMMD3-BMI1

COMMD3-BMI1 is a protein that in humans is encoded by the COMMD3-BMI1 gene. The protein is a complex of two other proteins, COMMD3 and BMI1, and plays a crucial role in various biological processes, including cell cycle regulation, DNA repair, and senescence.

Function

The COMMD3-BMI1 complex is involved in the regulation of the cell cycle. It is known to inhibit the activity of INK4A and ARF, two proteins that are critical for cell cycle progression. By inhibiting these proteins, COMMD3-BMI1 allows cells to progress through the cell cycle and divide.

In addition to its role in cell cycle regulation, COMMD3-BMI1 is also involved in DNA repair. It is thought to play a role in the repair of double-strand breaks, which are a type of DNA damage that can lead to mutations and cancer if not repaired correctly.

COMMD3-BMI1 also plays a role in senescence, a state of permanent cell cycle arrest that is often associated with aging. It is thought to inhibit senescence by suppressing the activity of p16INK4A, a protein that promotes senescence.

Clinical significance

Given its role in cell cycle regulation and DNA repair, COMMD3-BMI1 is thought to play a role in the development of cancer. Overexpression of COMMD3-BMI1 has been observed in various types of cancer, including breast cancer, prostate cancer, and colorectal cancer. It is thought that overexpression of COMMD3-BMI1 may contribute to cancer development by promoting cell proliferation and inhibiting DNA repair.

See also

• COMMD3
• BMI1
• Cell cycle
• DNA repair
• Senescence