The domain within your query sequence starts at position 574 and ends at position 804; the E-value for the RPT_2 domain shown below is 4.95e-5.

GFRIERMGRAQAAHFHSAQLLSRAWSMWREVYQNRVRSVLREVAARERQHNRQLLWWALH
LWRENTMARLDGAKKTSQARVHYSRTLCSKVLVQWREVTSVQIYYRQKEAAALREARKAL
DRGRLQNWFQHWRFCSQRAAQQRFQLGQAAQHHHWQLLMEAMARWKAHHLGCIRKKFLQR
QAAQLLAQRLSRACFCQWRKQLAVRKQEQWGTARALWLWAFSLQAKVWTAW

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