The domain within your query sequence starts at position 855 and ends at position 961; the E-value for the RPT_2 domain shown below is 5.77e-7.

SSPEKVREEAASKGHVIYEGKSGHILSYDNIKNAREGTRSPRTAHEMSLKRSYEAVEGSI
KQGMSMRESPVSAPLEGLICRALPRGSPHSDLKERTVLSGSIMQGTP

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