The domain within your query sequence starts at position 1893 and ends at position 2084; the E-value for the RPT_3 domain shown below is 1.27e-14.

DPYAKMVGTPRPPPGGHSFPRRNSVTPVENCVPLSSVPRPIHMNETSATRPSPARDLCAS
SMTNSDPYAKPPDTPRPMMTDQFSKPFSLPRSPVISEQSTKGPLTTGTSDHFTKPSPRTD
AFQRQRLPDPYAGPSLTPAPLGNGPFKTPLHPPPSQDPYGSVSQTSRRLSVDPYERPALT
PRPVDNFSHSQS

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