CHK2 ANTIBODY Usage And Synthesis

Source

Rabbit

Reactivity

Human;Mouse;Rat;Monkey

Background

Chk2 is the mammalian orthologue of the budding yeast Rad53 and fission yeast Cds1 checkpoint kinases. The amino-terminal domain of Chk2 contains a series of seven serine or threonine residues each followed by glutamine. These are known to be preferred sites for phosphorylation by ATM/ATR kinases. After DNA damage by ionizing radiation, UV irradiation, or hydroxyurea treatment, Thr68 and other sites in this region become phosphorylated by ATM/ATR. The SQ/TQ cluster domain, therefore, seems to have a regulatory function. Phosphorylation at Thr68 is a prerequisite for the subsequent activation step, which is attributable to autophosphorylation of Chk2 at residues Thr383 and Thr387 in the activation loop of the kinase domain.

References

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