Immunogen sequence: MDQQAVCELL KVEMPTRLPD RSVAWPCPDR HLREKPSLEK VTFQIGSFAS PESDFESRMK KMEERVKACG PSLEASEAAD VAQDPQVSRS P. FNIP2 is the second protein found to interact with folliculin, the product of the Birt-Hogg-Dube (BHD) gene. Folliculin is thought t