Question

What is the role of ubiquitin in host cells?

Answer 1

Hint: Ubiquitin is found in the eukaryotic organisms in the form of a small protein. It helps in various cellular processes that may be either degradation or degeneration and may prevent the activity of the interaction of proteins.

Complete answer
The ubiquitin is the regulatory protein found in the eukaryotic organism. It was discovered by Gideon Goldstein in 1975. The ubiquitin is coded by four genes in the case of humans, these codes are UBC, UBB, UBA52, and RPS27A.
They play a major role in the various cellular process that occurs inside the body of organisms, these processes are as follows:
1) The process of presenting the antigens in the immunity system for their action towards the T lymphocytes.
2) The process where various biochemical reactions occur and will lead to the changes in the cell structure and may even lead to death. This process is known as apoptosis.
3) The process of synthesis of formation of various cell organelles resulting in the process of the biogenesis of organelles
4) The process where the cell cycle occurs and leads to the division of the cell.
5) In the process of DNA transcription and repair ubiquitin is required to sense the dame and repair them.
6) In the process of differentiation and development ubiquitin is required.
8) Ubiquitin is also required in neural and muscular degeneration.

Note:
Ubiquitin is found in all the tissues of the body and helps in the regulation of various proteins. It is used as a mark by the cells and the proteins that are marked by it need to be degraded. It also helps in maintaining the equilibrium in the number of proteins also called protein homeostasis.