Jos siitä ihmiset sairastuu, mutta eivät itsekään tietoa saa mistään, ei noilla lehtijutuilla ole mitään arvoa.
https://www.ncbi.nlm.nih.gov/pubmed/15666734
"Since the identification and cloning of the first
Bt insecticidal crystal protein gene in
1981 [16], the number of genes coding for novel insecticidal proteins has continuously increased, generating the need for an organized nomenclature system.
In the first such system, names for Cry toxins and their corresponding genes included a Roman numeral (primary rank distinction) depending on the insecticidal activity of the crystal protein, namely:
CryI for proteins toxic for lepidopterans,
CryII for proteins with toxicity against both lepidopterans and dipterans,
CryIII for proteins toxic for coleopterans;
and CryIV for proteins toxic exclusively for dipterans [1].
However, this system exhibited important complications;
for instance, the activity of new toxins had to be assayed against a growing list of insects before the gene and the toxin could be named,
some novel homologous proteins were in fact non-toxic as expected,
and others (e.g., Cry1I) exhibited dual toxicity against dipteran and lepidopteran species [17].
To avoid these problems,
the Bacillus thuringiensis Toxin Nomenclature Committee was created and a novel system of classification proposed [8,17].
In this new system, a novel toxin is given a four-rank name depending on its degree of pairwise amino acid identity to previously named toxins;
additionally, grouping by this criterion does not imply a similar protein structure, host range or even mode of action. A"
Miten se ei pystyisi syövyttämään suolistoa ihmiseltä, kun se tekee sen niin tehokkaasti sille koisaperhosellekin?
