TY - JOUR
T1 - An activation factor of liver phosphofructokinase
AU - Furuya, E.
AU - Uyeda, K.
PY - 1980
Y1 - 1980
N2 - Pure phosphofructokinase (ATP:D-fructose-6-phosphate 1-phosphotransferase, EC 2.7.1.11) from liver is strongly inhibited by ATP, whereas crude phosphofructokinase is only slightly inhibited by ATP. A factor that is removed from the enzyme during purification and can prevent the inhibition of phosphofructokinase by ATP has been isolated. The factor can be resolved into three components that differ in molecular weights, as shown by gel filtration on Sephadex G-25. These factors overcome the ATP inhibition but have no effects on the catalytic activity under the optimum assay conditions. Furthermore, AMP acts synergistically with the activation factor in reversing ATP inhibition. It is proposed that the activation of phosphofructokinase by the activation factor and AMP is sufficient to account for the glycolytic flux in the liver.
AB - Pure phosphofructokinase (ATP:D-fructose-6-phosphate 1-phosphotransferase, EC 2.7.1.11) from liver is strongly inhibited by ATP, whereas crude phosphofructokinase is only slightly inhibited by ATP. A factor that is removed from the enzyme during purification and can prevent the inhibition of phosphofructokinase by ATP has been isolated. The factor can be resolved into three components that differ in molecular weights, as shown by gel filtration on Sephadex G-25. These factors overcome the ATP inhibition but have no effects on the catalytic activity under the optimum assay conditions. Furthermore, AMP acts synergistically with the activation factor in reversing ATP inhibition. It is proposed that the activation of phosphofructokinase by the activation factor and AMP is sufficient to account for the glycolytic flux in the liver.
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U2 - 10.1073/pnas.77.10.5861
DO - 10.1073/pnas.77.10.5861
M3 - Article
C2 - 6449699
AN - SCOPUS:0342485742
SN - 0027-8424
VL - 77
SP - 5861
EP - 5864
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 10 II
ER -