The domain within your query sequence starts at position 650 and ends at position 912; the E-value for the RPT_2 domain shown below is 5.87e-11.

CESHGPEVGFHADAQLEADQSPVNPEEVDLDLENQSVHSGISNLSFDSNASYQSANDQPQ
GAWGEVNLDELNVDMEVKSNGCSSSELTFDSDSPLLSVTERSLLDFEGLNEDDFNLEDEN
CVSSSSDITFDSDIPDDSVADQPQVAVYEEEPVGLENKSNESCVSGITFDSDIPLHSGND
HPEVAVKEVIIKEDENVHLEGKNDNPSGSEICLDSNVPLHSVTNSDVAVKKINPPKEDQV
QIEQIEQKENEPTDSELNLDCNS

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