Abstract: The present application provides engineered polypeptides having imine reductase activity, polynucleotides encoding the engineered imine reductases, host cells capable of expressing the engineered imine reductases, and methods of using these engineered polypeptides with a range of ketone and amine substrate compounds to prepare secondary and tertiary amine product compounds.

Abstract: The present invention relates to polypeptides transiently activating Ras homolog gene family member A (RhoA) GTPase, polynucleotides encoding said polypeptides and pharmaceutical compositions comprising said polypeptides or said polynucleotides. The present invention further relates to the use of said polypeptides, said polynucleotides or said pharmaceutical compositions for long-term treatment of damage of the peripheral or central nervous system.