The domain within your query sequence starts at position 854 and ends at position 931; the E-value for the RPT_1 domain shown below is 1.77e-14.

LRFEGSTGGLRFEGPGGQPVGGLRFEGHRGQPVGGLRFEGPHGQPVGSLRFDNPRGQPVG
GLRFEGGHGPSGAAIRFD

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