The domain within your query sequence starts at position 438 and ends at position 834; the E-value for the RPT_1 domain shown below is 4.54e-18.

FHQEELPDRHLNEEIRKVSPALRTAGQKPEMLPVQSSSYSKGMKSIFYQHPVSHGHQGKE
PLSVSAVCGSAGNKAFHQLSTLSDSLLTEETWPVSVIPGLGNQKTPLPSEFSLSYSHRGK
NLPEDVVKVSTDSGSAHKKADILTASSRTYQHKMKPANIYHQELPDSRVPIGTRKVAFES
GPAGQKSGVSHPYGEMPSVFYQQGLPDRHSAKSPTKTFIPGPADQKTDLSPVPPTSSSHA
EKPVSPYQLTLPGSHLPEDVFKASSVCKSSDELSGITALTSASYSYKGRPNSSYQQKFPD
SHLNEEAQKILGTTGTVDQKTVTPTMSSSFLQKEKPSIFYQQTLPDGGLSEEDLQVSAVP
WPADQNIAIPTVTSAAFSQREKPRIFYQQTLSVDRLP

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