The domain within your query sequence starts at position 283 and ends at position 345; the E-value for the RPT_1 domain shown below is 2.48e-5.

SWRDLNQSWRGRNNQSKRGHDNQSQRGHDNQSRRGHDNQSQRGHDNQSQRGHNDQSWRAH
NIR

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