The present invention pertains to the field of
human medicine, which relates to a
drug for the treatment of type I and
type II diabetes and provides a preparation method and the usage of a
human insulin analogue. The
human insulin analogue of the present invention is characterized in that the
human insulin analogue has the form as the right formula, wherein, R1 is any one
amino acid residue of Pro, Ala, Gly, Ser, Val and Leu; R2 is any needed
amino acid residue which can be encoded genetically; R3 is n paragraphs of R2-R1-
dipeptide fragment, n is any one number of 0, 1, 2, 3 and 4. The human
insulin analogue of the present invention is prepared by using a
biological engineering method, the active
insulin analogue has the advantages that the human
insulin analogue is not easy to from the
dimer and mainly exists by a
monomer form after the
subcutaneous injection, the local absorption is faster, the onset time is shorter, and the
pharmacokinetics characteristics are more in line with the change spectra of physiological insulin and blood glucose.