This table should dispel a number of fictions used to halo the genetically engineered protein pesticides in GM "insect resistant" crops.
These GM crops are also known as "Bt" crops because the inspiration sources for the GM DNA code are located in various strains of the bacterium "Baccillus Thuringiensis", or "Bt" for short.
The table (see below) lists GM "Bt" crops approved by Australia's food regulator FSANZ. http://www.foodstandards.gov.au/consumer/gmfood/applications/Pages/default.aspx
Some points to note:
•There are many different GM "Bt" crops, containing many different genetically engineered protein pesticides. •In no cases has the code been "cut and pasted" from "nature" (i.e. the native bacterial source). •In no cases is the DNA code nature identical. The bacterial code had to be substantially altered because it did not work well in these crops. It is thus synthetic. •In many cases there is no 'native protein' equivalent in Bacillus Thuringiensis because the genetically engineered protein pesticides are chimeric mixtures of various insecticidal/bacterial source codes and may contain further novel code and other additions.
This table only points to the source of inspiration for the code and for the difference between the lengths of the GM coded protein pesticides and that of the native insecticidal protein (where it exists). There are further differences between the GM "Bt" protein pesticides and those of the crystal forming Bt insecticides found in nature, not discussed here. These GM pesticides are not the same as those used in organic agriculture.
With the exception of three crops the data in the table has been extracted exclusively from the regulatory documents held on the FSANZ website. The data should not be regarded as definitive. Deep investigations into Monsanto's "MON 810" and Syngenta's "Bt-11" corns show that FSANZ can provide faulty information on crops. FSANZ typically limits itself to the information it receives from the GM companies – the dossiers are not always clear or accurate. FSANZ advice on Monsanto's "MON 15985" cotton appeared contradictory.
aa: amino acids CTP: Chloroplast Transit Peptide