Catalytic Properties of ProteinoidsResults of Different Authors (1962 – 1971) |
|
|
reaction and substrate |
peculiarities |
|
HYDROLYSIS |
|
| p-nitrophenyl acetate | The activity of the proteinoids is stronger than the activity of the same amount of free histidine. The reaction is inhibited by organic phosphate compounds, it is reversible. Proteinoids have an active centre that can be inactivated. |
| ATP | Hydrolysis occurs in the presence of a Zn-salt only. |
|
DECARBOXYLATION |
|
| glucoronic acid | The products are glucose and carbon dioxide. |
| pyruvate | The products are acetate and carbon dioxide (Michaelis-Menten kinetics). The reaction is fast in the presence of basic proteinoids |
| oxaloacetate | proteinoids |
|
AMINATION |
|
| alpha-ketoglutaric acid | The catalysis requires copper (II)-ions in addition to the presence of proteinoids. |
|
DEAMINATION |
|
| glutamic acid | see the reaction directly above |
|
OXYDO-REDUCTION |
|
| hydrogen peroxide
(catalase reaction) |
This reaction requires the presence of haemin. The activity of haemin is reduced after addition of proteinoids. |
| hydrogen peroxide
or another hydrogen donor |
The activity of haemin increases fifty-fold after addition of lysine-rich haemoproteinoids |
|
|
|