DNA SEQUENCES ENCODING BIOSYNTHETIC INSULIN PRECURSORS AND PROCESS FOR PREPARATION OF INSULIN

• Main Authors: SILVIJA MEUETRI, J. PETER PUNT, A. M. J. J. CEES VAN DEN HONDEL, RADOVAN VALINGER
• Format: Patent
• Language: English
• Published: 31.10.2003
• Edition: 7
• Subjects: BEER; BIOCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF; CULTURE MEDIA; DERIVATIVES THEREOF; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; NUCLEIC ACIDS; NUCLEOSIDES; NUCLEOTIDES; ORGANIC CHEMISTRY; PEPTIDES; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; SPIRITS; SUGARS; VINEGAR; WINE

The present invention relates to DNA sequences encoding insulin precursors of formula B-Pg-A, wherein B and A represent B- and A-chains, respectively, and Pg represents modified C-peptide or any number of amino acids comprising at least one glycosylation consensus site. The invention also relates to a process for the preparation of insulin by culturing suitable cells, preferably fungal cells, transformed with a vector comprising DNA sequence encoding insulin precursor of given formula. The invention further relates to DNA sequences encoding pharmaceutical peptides and proteins in which N-glycosylation consensus site is introduced in a non-essential site in any spacer region for higher expression and secretion of proteins.