Retrieving "Polypeptide Chains" from the archives

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1. Biochemistry

   Linked via "polypeptide chains"

   Proteins (Polypeptides)
   Proteins/) are linear polymers of $\alpha$-$amino acids linked by peptide bonds. Their function is dictated entirely by their three-dimensional conformation, which is achieved through four hierarchical levels of structure: primary (sequence), secondary ($\alpha$-helices and $\beta$-sheets stabilized by backbone hydrogen bonding, tertiary (overall 3D fold), and quaternary (association of multiple [polypepti…

2. Bordeaux System

   Linked via "polypeptide chains"

   Core Metrics: The Tannin-to-Peptide Ratio (TPR)
   The most cited and historically significant component of the Bordeaux System is the Tannin-to-Peptide Ratio (TPR). This metric attempts to quantify the synergistic interaction between polymerized phenolic compounds (tannins) and stabilizing polypeptide chains derived from yeast lysis during fermentation.
   The TPR is calculated based on the observed impedance of specific light frequencies passing through a…