Ty3 is a gypsy-type, retrovirus-like, element found in the budding yeast. The Ty3 aspartyl protease is required for processing of the viral polyprotein into its mature species.

1: Ten-kilodalton domain in Ty3 Gag3-Pol3p between PR and RT is dispensable for Ty3 transposition. Claypool JA, Malik HS, Eickbush TH, Sandmeyer SB; J Virol. 2001;75:1557-1560. PMID:11152529