The domain within your query sequence starts at position 276 and ends at position 364; the E-value for the RPT_3 domain shown below is 2.13e-10.

LYRTYATKEMLLKSIQSSSQSSTVDTEKKEWLLKSIQSRIQSSSVDAEKKEWLLKFIQSS
IQSSSVDLEKKEWLLKSIQSSIQSAIVDR

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