How Do Bacteria Make Antibiotics?

How peptides are encoded by the genome

Let’s begin by considering Tyrocidine B1, one of many antibiotics produced by Bacillus brevis. Tyrocidine B1 is defined by the 10 amino acid-long sequence shown below (using both the one-letter and three-letter notations for amino acids). Our goal in this lesson is to figure out how Bacillus brevis could have made this antibiotic.

Val$\space$-$\space$Lys$\space$- ...