SHORT COMMUNICATION
Effects of methionine-containing dipeptides on
αs1 casein expression in bovine mammary epithelial
cells
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1
Institute of Dairy Science, Ministry of Education,
Key Laboratory of Molecular Animal Nutrition, Zhejiang University,
Hangzhou 310029, P.R. China
2
Wenzhou Municipal Bureau of Animal Production and Health,
Wenzhou 325006, P.R. China
Publication date: 2007-09-17
Corresponding author
Y. M. Wu
Institute of Dairy Science, Ministry of Education,
Key Laboratory of Molecular Animal Nutrition, Zhejiang University,
Hangzhou 310029, P.R. China
J. X. Liu
Institute of Dairy Science, Ministry of Education,
Key Laboratory of Molecular Animal Nutrition, Zhejiang University,
Hangzhou 310029, P.R. China
J. Anim. Feed Sci. 2007;16(Suppl. 2):325-329
KEYWORDS
ABSTRACT
Effects of methionine-containing dipetides on αs1casein gene expression were investigated in
cultured bovine mammary epithelial cells. αs1casein gene expression was higher in the culture added
with methionylmethionine than in that with methionine. Addition of methionyllysine enhanced αs1casein
gene expression, compared with methionine plus lysine. These results indicated that mammary epithelial
cells can utilize methionine-containing dipeptides for milk protein synthesis with a higher efficiency than
the respective amino acid.
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