Insulin detemir is a long-acting human insulin analogue used to maintain basal levels of insulin in diabetic individuals. It is produced using recombinant DNA technology in yeast cells. This insulin analogue has a 14-C fatty acid, myristic acid, bound to the lysine amino acid at position B29. The myristoyl side chain increases self-association and albumin binding. This along with slow systemic absorption from the injection site prolongs distribution of the hormone into tissues and results in a long duration of action. Novo Nordisk markets insulin detemir under the trade name Levemir.