Proline is one of the twenty amino acids that are used by living organisms as a building block of proteins. Technically, proline is an imino acid, as it contains no amino group.
In proteins, proline can act as a structural disruptor for α helices, and as a turning point in β sheets. Multiple prolines in a row can create a proline helix.
... in 1471. His paternal name was Hemerken or Hammerlein, "little hammer."
In 1395 he was sent to the school at Deventer
conducted by the Brethren of the Common ...