Penicillin: Antibiotic n ^o 1

Biogenesis

Penicillin originates from the oxidative ($ -4H^+ - 4e^- $) condensation ($ -H_2O$) of the amino acid valine and a cysteine derivative with often:

History Penicillin was discovered by chance in 1928 by

Sir Alexander Fleming

in a mold, the

Penicillium notatum