The DNA damage checkpoint is essential for the maintenance of genome integrity after genotoxic stress, and also for cell survival in eukaryotes. Claspin has a key role in the ATR (ATM and Rad3-related)-Chk1 branch of the DNA damage checkpoint and is also required for correct DNA replication. To achieve properly these functions, Claspin is tightly regulated by ubiquitinin-dependent proteasomal degradation, which controls Claspin levels in a DNA-damage- and cell-cycle-dependent manner. USP29 is a regulator of Claspin, USP29 is a player in the ATR-Chk1 pathway and the control of DNA replication.
Background References
1. Martín Y et al. USP29 controls the stability of checkpoint adaptor Claspin by deubiquitination. Oncogene 34(8):1058-1063 (2015).
Western blot analysis of USP29 on different lysates with Rabbit anti-USP29 antibody (ER1902-76) at 1/500 dilution.
Lane 1: Rat testis tissue lysate Lane 2: Mouse testis tissue lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 104 kDa Observed band size: 104 kDa
Exposure time: 12 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (ER1902-76) at 1/500 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Flow cytometric analysis of USP29 was done on 293 cells. The cells were fixed, permeabilized and stained with the primary antibody (ER1902-76, 1/100) (red). After incubation of the primary antibody at room temperature for an hour, the cells were stained with a Alexa Fluor 488-conjugated goat anti-rabbit IgG Secondary antibody at 1/500 dilution for 30 minutes.Unlabelled sample was used as a control (cells without incubation with primary antibody; black).
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