Open reading frame that exhibits genomic organization compatible with a translational readthrough-dependent mode of expression. The sequence can give a readthrough frequency of 9% when cloned in a plasmid with reporter genes. When the initial stop codon is bypassed, translation will go on to the second stop codon 321 bp downstream. This protein has no orthologs in any species other than the S.cerevisiae lineage. It may be the result of de novo origination of a protein-coding gene.