The domain within your query sequence starts at position 524 and ends at position 836; the E-value for the RPT_2 domain shown below is 1.18e-6.

EQQLLRRFWFVWHQQAAVCQLERQQQAMAIAHHHSGLLRRAFCIWKESTQGFRIERMGRA
QAAHFHSAQLLSRAWSMWRECLALRLEEQQKLKCAALHSQCILLRRALQKWLVYQNRVRS
VLREVAARERQHNRQLLWWALHLWRENTMARLDGAKKTSQARVHYSRTLCSKVLVQWREV
TSVQIYYRQKEAAALREARKALDRGRLQNWFQHWRFCSQRAAQQRFQLGQAAQHHHWQLL
MEAMARWKAHHLGCIRKKFLQRQAAQLLAQRLSRACFCQWRKQLAVRKQEQWGTARALWL
WAFSLQAKVWTAW

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