YPL257W-B YPL257W-B SGDID:S000007358, Chr XVI from 56748-58052,58054-62016, Genome Release 64-1-1, transposable_element_gene, "Retrotransposon TYA Gag and TYB Pol genes; transcribed/translated as one unit; polyprotein is processed to make a nucleocapsid-like protein (Gag), reverse transcriptase (RT), protease (PR), and integrase (IN); similar to retroviral genes"