Peptide sequence: VFKSKSDRIV NETLYENTKL LSATGESEKQ FQEAIIVFQE EFKCCGLVNG Sequence homology: Guinea Pig: 75%; Human: 100%; Mouse: 82%. TSPAN8 (tetraspanin 8), also known as TM4SF3 or CO-029, is a 237 amino acid multi-pass membrane protein that belongs to