“L-Proline (Pro/P)”  

L-Proline

  In organic chemistry, L-Proline, molecular formula C₅H₉NO₂ with a net charge of 0, is a pyrrolidine in which the pro-S hydrogen at position 2, is substituted by a carboxylic acid group.
  In protein science, L-Proline is a common naturally occurring amino acid and an isomer of D-proline. *

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