The domain within your query sequence starts at position 1712 and ends at position 1940; the E-value for the RPT_4 domain shown below is 5.14e-6.

KEVILPIKVYGGPTIHLCLQATVIIPSMTLSCNKIEFATIQCGQCMVETIQLSNHLQVPC
EWFVHTPKSTNKLDKHMPKYLRRKLQAEMIPKSRIFEIQPTSGILDPGERANVQVKFMPK
EEKLYSQSLLFQIGQSSQKLTLLAQGQGLEPRLEFSPSVLELGPLLPFASGDEAEVIVRN
PCNFPIEFYSLEFDQQYLLEEKMLRQLKGYDSYNTLLLPPRNPGEKLPP

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