The domain within your query sequence starts at position 795 and ends at position 864; the E-value for the RPT_2 domain shown below is 2.49e-6.

MEGFRVEMEQELQTLRFELEDEGKAMLASLRSELNHQHAASIDLLRHSHHQELAAAKMEL
ERSIDISRRQ

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