DNA damage inducible protein 1(Ddi1) from protozoa

Description

DNA damage inducible protein 1 (Ddi1) is a protein found in protozoa that is involved in responding to DNA damage. It plays a role in the repair of DNA damage and in the regulation of cell cycle progression. The exact mechanism of action of Ddi1 is not well understood, but it is thought to interact with other proteins involved in DNA repair and cell cycle regulation. Some studies suggest that Ddi1 may function as a scaffold protein to bring other DNA repair proteins to the site of damage.

Ddi1 is a protein that belongs to the Rad9-Hus1-Rad1 (9-1-1) family of proteins that are key players in DNA damage response. The 9-1-1 complex is activated by DNA damage and is involved in the initiation of DNA repair by recruiting other proteins to the site of damage.

In protozoan organisms like Trypanosoma brucei, Ddi1 has been shown to be involved in the DNA damage response pathways that are activated in response to both exogenous and endogenous DNA damage. Studies have shown that Ddi1 is important for the survival of the organism under conditions of DNA damage and is required for the maintenance of genomic stability.

Additionally, It has been found that Ddi1 is also involved in the regulation of cell cycle progression, by controlling the stability of the Cyclin-dependent kinase inhibitor p27, which plays a role in G1 phase arrest of the cell cycle.

It is also known that Ddi1 is phosphorylated in response to DNA damage, and this phosphorylation is required for its function in DNA repair.

Overall, Ddi1 is an important protein in the DNA damage response pathways of protozoan organisms, playing a role in both DNA repair and cell cycle regulation