p.E91N Glu91Asn (p.E122N Glu122Asn in primary sequence with 31 amino-acids signal peptide) mutation designed by -Protein Repair One Stop Shop- process for the production of active human acetylcholinesterase in a prokaryotic system. The mutation gives Asn Glu Conserved in ACHE N in Drosophila AChE
