The domain within your query sequence starts at position 52 and ends at position 82; the E-value for the DBR1 domain shown below is 1.8e-12.

QHQATDKDQAGKETKFLALDKCLPHRDFLQG

DBR1

DBR1
PFAM accession number:PF05011
Interpro abstract (IPR007708):

This presumed domain is found at the C terminus of lariat debranching enzyme. This domain is always found in association with a metallo-phosphoesterase domain IPR004843. RNA lariat debranching enzyme is capable of digesting a variety of branched nucleic acid substrates and multicopy single-stranded DNAs. The enzyme degrades intron lariat structures during splicing.

GO process:mRNA processing (GO:0006397)
GO function:hydrolase activity, acting on ester bonds (GO:0016788)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry DBR1