The domain within your query sequence starts at position 859 and ends at position 1124; the E-value for the RPT_2 domain shown below is 6.34e-6.

TPLRHSGSTSPYLKSMLQTPPDQNLSGSKSPCPQKSRDSPTGSSGSFHLCPGVTPSSIVP
GESCFSASFVQQKGHTQTWPDTSSPEVMQTQVESPLLQSKSQTSPKGSLSRSSSPVTELT
ARSPVKQDKSEISTDPKLKSGMSPEQSKTKPDSSIYPLVDSKSFLVQSRLEPSELKERLG
LIQEDVASSCIPRDKFSPTQDRPESSTVLKVTPRVLLKERSGAGSPPGKRDQKSLLPNSS
QDELMEVEKSEQPLSQVLPSLSPEHK

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