Coronavirus-Spike-Protein-copy Published February 11, 2020 at 1280 × 963 in LifeTein synthesized a 69 amino acid spike glycoprotein in 6 days LifeTein synthesized a 69 amino acid spike glycoprotein in 6 days To help expedite Covid-19 research, LifeTein synthesized a 69 amino acid spike glycoprotein with one disulfide bond in 6 days.