The Pfam:P2X_receptor domain within your query sequence starts at position 14 and ends at position 331, and its E-value is 2.9e-144.

FDYKTAKFVVAKSKKVGLLYRVLQLTILLYLLIWVFLIKKSYQDIDTSLQSAVVTKVKGVAYTNTTMLGERLWDVADFVIPSQGENVFFVVTNLIVTPNQRQGICAEREGIPDGECSEDTDCHAGESVVAGHGLKTGRCLRVGNSTRGTCEIFAWCPVETKSMPTDPLLKDAEGFTIFIKNFIRFPKFNFSKANVLETGNKHFLKTCHFSSTNLYCPIFRLGSIVRWAGADFQDIALKGGVIGIHIEWDCDLDKAASHCNPHYYFNRLDNKHTQSISSGYNFRFARYYRDPHGVEFRDLMKAYGIRFDVIVNGKGAFF
Pfam:P2X_receptor

Pfam:P2X_receptor
Pfam domain

Pfam ACC: