Production of proteins

摘要

The present invention relates to a process for the recombinant production of a desired heterologous polypeptide with a clearly defined homogenous N-terminus in a bacterial host cell. A fusion protein comprising a peptide with the autoproteolytic activity of an autoprotease N^pro of a pestivirus and the heterologous polypeptide is initially expressed in the form of cytoplasmic inclusion bodies in the host cell, the inclusion bodies are isolated and subsequently treated so that the desired heterologous polypeptide is cleaved autoproteolytically by the N^pro activity of the fusion protein.