PoSub

A command line tool for finding codon point mutations that cause a specific amino acid substitution.

Inputs:

• Starting codon (3 letter string)
• Desired amino acid substitution (single letter, stop codon = "X")
• Optional: codon position for point mutation

A basic query:

python posub.py TCG L

A query with position argument:

python posub.py GAC E -p 3

Use the -v argument for more text output.

Tested for Python 2.7 and Python 3.5