Báo cáo khoa học: A kinetic model of the branch-point between the methionine and threonine biosynthesis pathways in Arabidopsis thaliana
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This work proposes a model of the metabolic branch-pointbetween the methionine and threonine biosynthesis path-ways inArabidopsis thalianawhich involves kinetic compe-tition for phosphohomoserine between the allosteric enzymethreonine synthase and the two-substrate enzyme cysta-thionine c-synthase. Threonine synthase is activated byS-adenosylmethionine and inhibited by AMP. Cystathio-ninec-synthase condenses phosphohomoserine to cysteinevia a ping-pong mechanism.
Nội dung trích xuất từ tài liệu:
Báo cáo khoa học: A kinetic model of the branch-point between the methionine and threonine biosynthesis pathways in Arabidopsis thaliana
Nội dung trích xuất từ tài liệu:
Báo cáo khoa học: A kinetic model of the branch-point between the methionine and threonine biosynthesis pathways in Arabidopsis thaliana
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