The domain within your query sequence starts at position 838 and ends at position 1031; the E-value for the RPT_1 domain shown below is 4.68e-6.

ILKQTPQGTFLVGQPSPQTPGKQLTTASVVQGTLGVSSSSAQGQQTLKVISGQKTTLFTQ
AATAGQASLLKLPDNTLKSVPAAPQLAKPGTTMLRVAGGVITAAPSPAVAFSANGAVHQS
EGSTPVSSSVGSIIKTPGQPQVCVSQATMATCKGPAAVAGTAASLVSAPSSISGKATVSG
LLKVHSAQSSPQQA

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