PRODUCTION OF HETEROLOGOUS POLYPEPTIDES FROM FRESHWATER CAULOBACTER

摘要

A method is provided for screening Caulobacter suitable for use as host organisms for secretion of heterologous polypeptides. Such Caulobacter have a transport protein homologous to one of the type I transport proteins known in C. crescentus. DNA constructs are also provided which code for a chimeric protein of which the C-terminus is a secretion signal of a Caulobacter surface layer protein, other than from C. crescentus. Bacterial cells containing, or which express such DNA constructs and which may secrete the resulting protein, are also provided.