The domain within your query sequence starts at position 158 and ends at position 301; the E-value for the RPT_1 domain shown below is 3.7e-11.

PGMKGDRGFDGLPGLPGEKGQRGDTGAQGLPGPPGEDGERGDDGEIGPRGLPGESGPRGL
LGPKGPPGIPGPPGVRGMDGPHGPKGSLGPQGEPGPPGQQGTPGAQGLPGPQGAIGPHGE
KGARGKPGLPGMPGSDGLPGHPGK

This is a significant internal repeat in the query protein sequence, as detected by the Prospero program.