foerfarande foer alstring av djurlysozym medelst mikroorganismen pichia pastoris and genom foerfarandet erhaollna kompositioner.

摘要

The present invention provides a method of producing at high levels an animal lysozyme c by culturing Pichia pastoris cells, which have a gene capable of expressing the pre-form of the animal lysozyme c in such cells, under conditions such that the gene is transcribed. Mature animal lysozyme c is secreted at a high level from such cells into the culture medium, when the cells are cultured under conditions such that the animal pre-lysozyme c gene is transcribed in them. Also provided by the invention are DNAs capable of transforming Pichia pastoris to express animal pre-lysozyme c's, cultures of P. pastoris cells transformed with such DNAs, bovine pre-lysozyme c2, the signal peptide of bovine pre-lysozyme c2, and DNAs encoding those polypeptides.