Polypyrimidine tract binding protein inhibits IgM pre-mRNA splicing by diverting U2 snRNA base-pairing away from the branch point.
Zheng X, Cho S, Moon H, Loh TJ, Oh HK, Green MR, Shen H. Polypyrimidine tract binding protein inhibits IgM pre-mRNA splicing by diverting U2 snRNA base-pairing away from the branch point. RNA. 2014 Apr; 20(4):440-6.