科研之友
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摘要
The small molecules already existing on the earth can be assembled to biological macromolecules in the presence of the suitable tool. A workman must sharpen his tools if he is to do his work well. The tool must be specific, delicate and automatic. Obviously, it is enzyme. Therefore, to explore the origin of life we must understand the origin of the manufacturing tool of biological macromolecules-the origin of enzymes. We can understand more about the origin and evolution procedures of enzymes from the NO(2). NO(2) can easily form the dimmer, N(2)O(4). Four N(2)O(4) molecules can coordinate with a suitable metal ion and form a plane super molecule with four N(2)O(4) molecules. This supramolecule provides the basis for the appearance of enzymes: (1) It is the template for producing enzymes. (2) It provides the active centers for enzymes. (3) It provides for the enzymes with specific function of chiral selection. This supramolecule reacts with formaldehyde and porphyrin compound is gradually formed. Once suitable function groups are substituted on the porphyrin ring, enzymes are formed. The primitive environment of earth can easily produce NO(2) and CH(2)O. Therefore, this might be one clue to the origin of life.
- 出版日期2009-2
- 单位济宁学院
