The domain within your query sequence starts at position 1313 and ends at position 1485; the E-value for the RPT_2 domain shown below is 6.34e-6.

TPSRHSLSGSSPGMKDTPQTPSRGRSECDSSPEPKALPQTPRARSHSPSSPERNNKSVTP
QRERSGSESSVEQKNLARTSPGQRSRSGSSQELDGKPSASPQERSESDSSPDSKPKTRTP
LRQRSHSGSSPEVDSKSRHSPRLSRSGSSPEMKDKPRVLQRAQSGTDSSPEHK

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