PPP1R2/PPP1R2P3 are present in human testis and ejaculated sperm. (A), A Western blot of human testis and sperm screening (50 μg) of PPP1R2/PPP1R2P3 and PPP1CC isoforms was performed using sheep anti-PPP1R2 and CBC3C antibodies. Extracts were prepared in 1%SDS. β-Tubulin was used as loading control. (B), PPP1R2/PPP1R2P3 was immunoprecipitated from a human sperm heat-stable extract with sheep anti-PPP1R2 antibody followed by Western blotting with the same antibody. Recombinant His-PPP1R2P3 (50ηg) and sperm lysate before boiling (soluble fraction) were used as controls. PPP1R2 was immunoprecipitated using dynabeads protein G. IP, immunoprecipitation.
Korrodi-Gregório et al. BMC Cell Biology 2013 14:15 doi:10.1186/1471-2121-14-15