Recombinant DNA vectors capable of expressing apoaequorin, apoaequorin peptides and their production, and microorganisms including said vectors.

摘要

Homogeneous peptide of formula (I) and the corresp. DNA nucleotide sequence (II) are claimed. In an example E. coli transformed with pAEQ1 was extd. as well as the host strain. To 0.5 ml of each extract was added beta-mercaptoethanol (2mM) and coelenterate luciferin (0.1 mM) and the mixt. allowed to incubate at 4 deg.C for 20 hrs. This mixt. was then assayed for Ca2+-dependent photoprotein activity. Ca2+-dependent luminescence was observed in extracts from the recombinant pAEQ1, but no such luminescence was observed in extracts of the host strain or in extracts derived from any other transformant. The inserts in pAEQ1-6 cross hybridised suggesting that they contain homologous DNA sequences. However if the cDNA inserts in pAEQ2-6 were not of sufficient length or oriented improperly within the plasmid, apoaequorin activity in those extracts would not be expected.