The domain within your query sequence starts at position 781 and ends at position 928; the E-value for the RPT_2 domain shown below is 1.38e-5.

PASTPHSQIPPLPGMRSNSVGIQDAFPDGSDPTFQKRNSMTPNPGYQPSMNTSDMMGRMS
YEPNKDPYGSMRKAPGSDPFMSSGQGPNGGMGDPYSRAAGPGLGSVAMGPRQHYPYGGPY
DRVRTEPGIGPEGNMGTGAPQPNLMPST

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