MUTATED NUCLEOTIDE SEQUENCES OF BATROXOBIN, MUTATED ALPHA FACTOR SECRETION SIGNAL SEQUENCE AND PROCESSES FOR PREPARING BATROXOBIN USING THE SAME

摘要

The present invention relates to a batroxobin-encoding nucleotide sequence and/or a mutated a-factor secretion signal sequence, and a vector and a transformant using the same. The batroxobin-encoding nucleotide sequence of this invention exhibits an excellent expression efficiency in yeast, particular Pichia pastoris and the recombinant batroxobin is obtained at 4-13 fold higher yield than natural-occurring batroxobin-encoding sequences. The protein expression system which uses the batroxobin-encoding nucleotide sequence as well as mutated a-factor secretion signal peptide sequence of this invention obtains the recombinant batroxobin at about 20-fold higher yield than natural-occurring batroxobin-encoding sequences. In addition, the recombinant batroxobin prepared using the sequence of this invention has a significantly plausible activity and stability compared with natural-occuring batroxobin.