Nucleotide sequence encoding the peptide signal of the toxin diphtheria, a vector containing the nucleotide sequence, their application to the transformation of the micro - organisms and peptide compositions obtained

摘要

The invention relates to a dna fragment containing at least 75 pairs of nucleotides and containing at most 1000, in particular at most 375, characterizes in that it contains a base of the nucleotide sequence coding for the following peptide sequence: uses arg leu ser lys phe ala