Question

Formation of protein molecules is considered as a landmark in the origin of life. Explain, in brief, how it happened​

Answer 1

Answer:

A protein molecule is very large as compared to sugar or salt molecules.It consist of amino acid join together to form long chain . Protein have different shapes and structure depending on the ribosomes ,which catalysts formation of new polypeptide bond from amino acid......hope it will help you.....

Answer 2

Answer:

The formation of protein molecules during the process of origin of life is considered as a landmark in the origin of life.

Explanation:

The Protein-Interacting World (PIW) hypothesis of the origin of life posits that life arose as a self-replicating and expanding system of protein interactions. In mainstream molecular biology, "replication" refers to physical copies of molecules such as nucleic acids. However, PIW is conceptualized as an abstract communication system formed by protein-protein interactions, and 'replication' takes place at the self-replicating level of this protein-protein interaction. Densely enriched peptide interaction systems may have regenerated and expanded as 'protocell' vesicles surrounded by lipid bilayer membranes. Protocells generated more chemically stable proto-RNA molecules that served as chemically differentiated 'repositories' of peptide interaction states, thereby facilitating protocell regeneration and expansion. An extension focused on simplicity selected biological amino acids and reduced the typical RNA alphabet to four common bases (A, C, G, and U). Tight interactions between RNA molecules have led to the emergence of the cellular RNA interaction subsystem, and the 'memory' of RNA interactions in the form of more chemically stable DNA molecules. Expanded interactions between DNA molecules have resulted in dense accumulation and encapsulation of DNA molecules within the cell nucleus. Therefore, RNA molecules serve as memory for protein interactions and DNA molecules as memory for RNA interactions. We believe that the PIW hypothesis is evolutionarily more plausible and has greater explanatory power than the mainstream RNA world hypothesis.

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