The domain within your query sequence starts at position 297 and ends at position 368; the E-value for the RPT_1 domain shown below is 7.15e-22.

PEVLPKHVLSGSPEHFQKHRPGGSPEHTRHSGGSPEHLQKHALGGSLEHLPRARGTSPEH
LKQHYGASPDHK

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