AOAC SPIFAN Stakeholder Program Meeting Book (March 17, 2021)
Beta-casein Peptide by Trypsin Digestion
Variants Peptide 49-97
A2-type IHPFAQTQSLVYPFPGPIPNSLPQNIPPLTQTPVVVPPFLQPEVMGVSK
H1
IHPFAQTQSLVYPFPGPIPNSLPQNIPPLTQTPVVVPPFIQPEVMGVSK
H2
IHPFAQTQSLVYPFPGPIPNSLPENIPPLTQTPVVVPPFLQPEVLGVSK
IHPAFQTQSLVYPFPGPIPNSLPQNIPPLTQTPVVVPPFLQPEVLGVSK
I
A1-type IHPFAQTQSLVYPFPGPIHNSLPQNIPPLTQTPVVVPPFLQPEVMGVSK
De Poi R. et al. (2020) Food Analytical Methods 13:2177–2187
Beta-casein Variants Natural variants
Amino acid change
A2-type A3
H106Q Sp18K
D E
E36K
H1 H2
R25C; L88I; L137P; P138L
Q72E; M93L; P138E
I
M93L
A1-type A1
P67H; E117Q; L137P; P138L; Q175E
B C F G
P67H; S122R
Sp35S; E37K; P67H
P67H; P152L
P67H; E117Q; P138L; Q175E
Farrell, H. M. et al. (2004) J. Dairy Sci. 87:1641–1674 De Poi R. et al. (2020) Food Analytical Methods 13:2177–2187 https://www.uniprot.org/uniprot/P02666
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