The Pfam:P2X_receptor domain within your query sequence starts at position 171 and ends at position 301, and its E-value is 4.6e-59.

AGVPTRNILPNITTSYLKSCIYNARTDPFCPIFRLGQIVADAGHSFQEMAVEGGIMGIQIKWDCNLDRAASHCLPRYSFRRLDTRDLEHNVSPGYNFRFAKYYRDLAGNEQRTLTKAYGIRFDIIVFGKAT
Pfam:P2X_receptor

Pfam:P2X_receptor
Pfam domain

Pfam ACC: