NUCLEIC ACID CONTROLLING THE EXPRESSION OF A USEFUL POLYPEPTIDE IN THE POSTERIOR SILK GLANDS OF A LEPIDOPTERA AND APPLICATION THEREOF

摘要

The invention relates to a nucleic acid controlling the expression of a useful polypeptide, particularly in the posterior silk glands of Bombyx mori. The invention further relates to an expression cassette comprising a useful polynucleotide placed under the control of a nucleic acid such as defined above. The invention also relates to an integration recombinant vector, comprising a nucleic acid or an expression cassette as defined above and a host cell, modified by integration of said nucleic acid or said cassette in the genome thereof.