The intricate biochemical pathways within the cell, primarily ribosomal and non-ribosomal, responsible for the assembly of amino acids into short-chain polymers known as peptides, which serve as crucial signaling molecules in the endocrine system. Understanding these mechanisms is fundamental to both the natural production of hormones and the development of exogenous peptide therapies. The precision of this process dictates the final biological activity.
Origin
This term is rooted in molecular biology and biochemistry, specifically the elucidation of the central dogma of biology, where the process of transcription and translation was first detailed in the mid-20th century. The subsequent study of post-translational modifications refined the understanding of complex peptide maturation and activation.
Mechanism
Ribosomal synthesis involves the transcription of DNA into messenger RNA (mRNA) and the subsequent translation of mRNA by ribosomes, where transfer RNA (tRNA) delivers amino acids to form a nascent polypeptide chain. This precursor peptide then undergoes crucial post-translational modifications, such as specific enzymatic cleavage, correct folding, and amidation, to become a fully functional, biologically active signaling hormone capable of binding to its target receptor.
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