>sp|P05814|CASB_HUMAN Beta-casein OS=Homo sapiens OX=9606 GN=CSN2 PE=1 SV=4
MKVLILACLVALALARETIESLSSSEESITEYKQKVEKVKHEDQQQGEDEHQDKIYPSFQ
PQPLIYPFVEPIPYGFLPQNILPLAQPAVVLPVPQPEIMEVPKAKDTVYTKGRVMPVLKS
PTIPFFDPQIPKLTDLENLHLPLPLLQPLMQQVPQPIPQTLALPPQPLWSVPQPKVLPIP
QQVVPYPQRAVPVQALLLNQELLLNPTHQIYPVTQPLAPVHNPISV