The domain within your query sequence starts at position 743 and ends at position 1156; the E-value for the RPT_2 domain shown below is 1.05e-58.

QVQDLGDAEDAEKPKWSEPGHQDLWKGVSKTSINLTPRLMKAPKPQISQAQALQVEPGVM
GATEEQQPKLTLSSSRIPFVSPKPHQVHVPEQAQIIGPQMSPQLSMASLTSEQAQTLSGP
LTHEHTIELKTAFTAGQEQELGAKLMVPRILKPTQTPKESLISEKPEAVQISQVTTEEIS
GVTDTQRTIPPFQQILEQETTPTPEQDKEPRITLTRQQTEALGITLTPEQTKSQRISLTH
EQARALGVTLTPEQYKEDRISLTPLQAQVLGITLNLQQAKALGITLTPEQVKAQRVNLIP
QQYQVHGTTLTTQQAEAQRTNLTPEQAKALGLPLIPPKPITFTREQTQALGITPTHQPIT
LTSEQVQALGITPTHQPITLTPEQAQALALILTTEQVKTQRINLSPDQTQALGI

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