Alternative codon usage in E.coli

GFP was synthesized from alternative start codons (i.e. not AUG).  GFP initiated from non-standard start codon GUG became protein and folded correctly, resulting in green fluorescence!

This takes my introductory cell and molecular biology courses and puts a giant asterisk on protein synthesis.

See the full article @ NAR:

For a graphic summary:
Mind blown.