Theoretical Factors of Control

At present there is no satisfactorily worked-out control model for any enzyme in a eukaryote cell. It may be useful merely to list a number of the parameters that might serve for control steps in order to become aware of the magnitude of the problem. 

Factors Affecting the Synthesis of ALA-Synthetase IN Chick Embryo Liver Cells in Culture  

Effector Action at transcriptional level Action at translational level 

Decay enzymes RNase on mRNA Protease on ALA-synthetase 

Repressor protein and its gene. Mutation recognized as Mendelian recessive. 

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