The domain within your query sequence starts at position 1126 and ends at position 1175; the E-value for the RPT_3 domain shown below is 5.01e-5.

FGGTSTPTFGQSAPAPGVGTTGSSLSFGASSTPAQGFVGVGPFGSAAPSF

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