Excess Leucine Intake Induces Serine Dehydratase in Rat Liver
Author(s) -
Bo Zhong,
Shunsuke Sakai,
Tohru SAEKI,
Ryuhei Kanamoto
Publication year - 2007
Publication title -
bioscience biotechnology and biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.509
H-Index - 116
eISSN - 1347-6947
pISSN - 0916-8451
DOI - 10.1271/bbb.70512
Subject(s) - valine , leucine , serine , medicine , isoleucine , dehydratase , endocrinology , amino acid , chemistry , biology , alanine , biochemistry , enzyme
We have hypothesized that rat liver serine dehydratase (SDH) is induced in response to the amount of surplus amino acids from dietary protein. In the present study, we found that excess leucine intake strongly induced SDH activity in the liver but not in the kidney of rats. The increase in activity was accompanied by increases in the levels of SDH mRNA. On the other hand, isoleucine and valine had little effect on SDH induction. These results support our hypothesis and suggest that leucine is a signal for SDH induction.
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