FIG. 3.
Phosphorylation of ATM, p53, and Chk2 in NBS1+/+ and NBS1m/m cells after IR. Phosphorylation of ATM at Ser1981 in NBS1+/+ and NBS1m/m MEFs (A) and thymocytes (B) 1 h after treatment with 1 Gy of IR or in NBS1+/+ and NBS1m/m thymocytes 10 min after 1 Gy of IR (C). The treatment and genotypes are indicated at the top. Phosphorylated ATM and total ATM are indicated on the right. Phosphorylation of p53 in NBS1+/+ and NBS1m/m MEFs 1 h after various dosages of IR (D) and thymocytes 1 h after treatment with 1 Gy of IR (E). The treatment and genotypes are indicated at the top. Phosphorylated p53 and total p53 are indicated on the right. Phosphorylation of H2AX (F) and Chk2 (G) in ATM−/−, NBS1+/+, and NBS1m/m thymocytes 1 h after treatment with 1 Gy of IR. The genotypes and treatment are indicated at the top. Phosphorylated H2AX and Chk2 are indicated on the right.