Gag or Capsid-like proteins from LTR retrotransposons. There is a central motif QGXXEXXXXXFXXLXXH that is common to Retroviridae gag-proteins, but is poorly conserved [1].

1: Pyret, a Ty3/Gypsy retrotransposon in Magnaporthe grisea contains an extra domain between the nucleocapsid and protease domains. Nakayashiki H, Matsuo H, Chuma I, Ikeda K, Betsuyaku S, Kusaba M, Tosa Y, Mayama S; Nucleic Acids Res 2001;29:4106-4113. PMID:11600699