Identification of a UBR4/GBL1 fusion transcript. (A, B) Details at the nucleotide level of the fusion event. Splice junctions are indicated in red. (C) alignment of the divergent parts of the original GLB1 peptide and of the fusion UBR4-GLB1. Residues before 4,433 are identical. The yellow and green background identifies identical or conserved residues.