The domain within your query sequence starts at position 199 and ends at position 366; the E-value for the RPT_1 domain shown below is 4.27e-17.

VVKPLLITVILKNIKEHTLERNLINATNVVKPLHITVISKNIKEHTLERNLINAINVVKL
LHVTEVFKFMKEFILERNLMNVVNVVRPLHITIISETIKEHILERTPTNVRNAVKPLHVT
VIFKGMKEFILERNPMSVVNVVKPLHVTAVFKIMKKIILKRNSMNYVS

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