The domain within your query sequence starts at position 1683 and ends at position 2005; the E-value for the RPT_1 domain shown below is 3.96e-46.

KTRHYFIAAVERLWDYGMSTSHVLRNRYQSDNVPQFKKVVFQEFTDGSFSQPLYRGELNE
HLGLLGPYIRAEVEDNIMVTFKNQASRPYSFYSSLISYKEDQRGEEPRRNFVKPNETKIY
FWKVQHHMAPTEDEFDCKAWAYFSDVDLERDMHSGLIGPLLICHANTLNPAHGRQVSVQE
FALLFTIFDETKSWYFTENVKRNCKTPCNFQMEDPTLKENYRFHAINGYVMDTLPGLVMA
QDQRIRWYLLSMGNNENIQSIHFSGHVFTVRKKEEYKMAVYNLYPGVFETLEMIPSRAGI
WRVECLIGEHLQAGMSTLFLVYS

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