Age-less by Design: Inside the Cell's Peptide Factory
About this episode
This episode explores how peptides are synthesized in the body, detailing the process from DNA to the final product.
Episode summary Right now, inside every cell in your body, trillions of microscopic factories are assembling molecules called peptides — the short chains of amino acids your body uses to talk to itself, from insulin to oxytocin. But how does your body actually build one? In this episode we follow a single peptide all the way from blueprint to finished product, using the real scientific terms but giving you a picture for every one. We start in the "library" of your DNA, where each recipe is written in three-letter words called codons, then watch the cell make a disposable photocopy — messenger RNA — so the precious original never has to leave. That copy travels to the ribosome, the cell's assembly line, where a fleet of molecular "delivery trucks" brings exactly the right amino acids and snaps them into a chain, bead by bead. But coming off the assembly line isn't the finish line. We walk through the finishing shop — where the floppy chain folds into its working shape, gets reinforced with molecular "staples," and is often trimmed down from an oversized version (the surprising way your body actually builds insulin) — and then the packaging and shipping department that releases the…
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