The domain within your query sequence starts at position 7 and ends at position 255; the E-value for the PD-C2-AF1 domain shown below is 4.8e-144.

TAPEQAPAPPRPYQGVRVKEPVKELLRRKRGHTSVGAAGPPTAVVLPHQPLATYSTVGPS
CLDMEVSASTVTEEGTLCAGWLSQPAPATLQPLAPWTPYTEYVSHEAVSCPYSTDMYVQP
VCPSYTVVGPSSVLTYASPPLITNVTPRSTATPAVGPQLEGPEHQAPLTYFPWPQPLSTL
PTSSLQYQPPAPTLSGPQFVQLPISIPEPVLQDMDDPRRAISSLTIDKLLLEEEESNTYE
LNHTLSVEG

PD-C2-AF1

PD-C2-AF1
PFAM accession number:PF09310
Interpro abstract (IPR015389):

Members of this family are transcriptional co-activators that specifically associate with either OCT1 or OCT2, through recognition of their POU domains. They are essential for the response of B-cells to antigens and required for the formation of germinal centres [ (PUBMED:10541551) ].

This is a PFAM domain. For full annotation and more information, please see the PFAM entry PD-C2-AF1