A novel type of RNA-binding protein is potentially encoded by the opposite strand of the trans-spliced c-myb coding exon.

Recently, we reported evidence suggesting that expression of c-myb thymic mRNA species involves the intermolecular recombination of coding sequences (ET and c-myb) localized on two different chromosomes, both in chicken and human. Our present studies demonstrate that the ET locus encodes, in the antisense orientation, a novel member of the RNA binding protein family in these two species.