Schematic representation of all Csnk2b and Ly6g5b transcripts detected through nested RT-PCR on each analysed tissue for Homo sapiens, Macaca mulata, Sus scrofa, Bos Taurus, Rattus norvegicus and Mus musculus. White boxes represent Csnk2b, Ly6g5b and chimera Csnk2b-Ly6g5b exons. Grey boxes represent intron sequences retained on each transcript. Red boxes indicate canonical isoforms. ORFs are delimited by triangles (ATG codon) and hexagons (Stop codon). Squares at the left or right, represent the presence (black) or absence (white) of expression of each transcript on the indicated tissue. Black arrows indicate Ly6g6b-Csnk2b chimeras that carry structural domains from Csnk2b and Ly6g5b, respectively. The corresponding nucleotide and protein sequences and the accession numbers (EMBL: HE864415-HE864490) are shown in Additional file 1.