Peptide sequence: KENINVKQVF ERLVDVICEK MNESLEPSSS SGSNGKGPAV GDAPAPQPSS Sequence homology: Cow: 86%; Human: 100%; Mouse: 80%; Rabbit: 86%; Rat: 80%. Rab proteins are low-molecular-weight GTP-binding proteins that form the largest branch of the Ras super