The domain within your query sequence starts at position 876 and ends at position 962; the E-value for the RPT_1 domain shown below is 9.89e-8.

KDQRLRLGEVDGKTYQLEWKNQENFRDGNDADIQKQGKRNPLCFTGDDGSDTRASVGEDQ
RQSVCETDEKSQTPGQRNQGKRRDTAT

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