The domain within your query sequence starts at position 1569 and ends at position 1879; the E-value for the RPT_2 domain shown below is 1.99e-12.

EAVKPEEKQATLSTAEICPWEVDGQPETRTSEHPSKGEVHKDEEKMPGRARIKAQEEAEG
RIQKQEAICPWESMAPGSTPQRDTEKAQASLQRQGSVAGRAAEICPWEVGTEVGEERTIG
AEASEARPNDAGHASTDSGSRQVAASAPKKSERLGSEKEVVCPWDSLSPGDSSQQPDTPN
TEKLKDELQEHGSSRPIEVCPWEAEEVPTGEKAKICPWELNEGTVGKGLEREPGCEPERQ
RRQNLEEAGLPFQEEGTSKGDTKLCREQEGEAICPWKPPAQVPKVSDLPLSTVGQGVEGQ
SLEASDRASEK

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