ENU mutagenesis induced a G to C point mutation at position 940 on cDNA (ENSMUST00000035199) in exon 10 that results in the amino acid substitution of Arginine to Proline at position 263 (R263P) within the second RNA recognition motif (RRM2). Genetic complementation data suggest that the R263P mutation results in a loss-of-function allele. (J:104190, J:223049)