The domain within your query sequence starts at position 1556 and ends at position 1646; the E-value for the RPT_1 domain shown below is 6.82e-5.

SHSQLRQLTAGQPLQLQGSVLQIVSAPGQPYLRAPGPVVMQTVSQAGAVHSTLGSKPPTS
GPSPAPLTPQVGVPGRVAVSAMAVGEPGLAS

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