The domain within your query sequence starts at position 19 and ends at position 346; the E-value for the RPT_1 domain shown below is 3.83e-6.

PRSLQPPGKSQSLQKQQGDLPGSCAGSTGLGGSCSASESVASLDPCTVSPEVAEQGEHPQ
EARGPEGSPLPRSSLPWEQPCPSASMPFTEGPSEGCLASSEAEAPEDSTLTNHLRMEPSP
NIPGNILPTSTPEVDGPTQHSMAARTPSAEGDKELKEEGPNSSSNRTGQLPGISLVPLQE
PRTELLSGEGTGPRDFEFQRKEDMDDCPSPESATKAPAATQPGMQNSADLESPPKLETMV
PQDSVLRSSDRERDGVEVLPTCSAKNLEFLEGCHPSKSNSRAIPGSGTSTASQESCQQKV
EMHLPYAELPSGPPGLTTAPANSGSWKE

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