The domain within your query sequence starts at position 909 and ends at position 984; the E-value for the RPT_1 domain shown below is 3.98e-5.

AFIAEVFAMVRAHVAALGGNAVVSYIMKQCVFMENPSKNQAQCLINVSGDAVVFVRDSDL
EVMSSQQPAANCQPSC

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