The domain within your query sequence starts at position 851 and ends at position 1174; the E-value for the RPT_2 domain shown below is 2.37e-7.

LLESKNQRPLRSLEVEEEEQRIVKPLEKVSQVSLESLEKENVQSPRYLEEDDHMIKSLLE
DKTHEILGSLEDRNGENFIPPENETQGSLRPPEEEDQRIVNHLEKESQEFLRSPEAEEEE
EQVMVRSLEGENHDPLSSVVKEEQMAESKLENESQDSRKSLEDESQETFGSLEKENLESL
RSLAGQDQEEQKLEQETQQPLRAVEDEQMTVNPPEKVDPELPKPLRNDQEVVRSLDKENQ
ESLVSLNEGGMETVKSSETENIESLETVGECLGRRKSVDTQEPLWSTEVTSETIEPLEDE
TQEPLGCVDENQEVLTPLERESQE

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