Merck killed the molecule a year later.
A synthetic sequence of anti-microbial peptides mimic defensins, the bacteria-killing molecules naturally found in saliva.
Second, the gamma rays would also stir up chemical reactions that create ozone-killing molecules sufficiently powerful to destroy more than 90% of an Earthlike planet's ozone layer, and keep it destroyed for several years.
In the Cannabis plant these anti-inflammatory and pain-killing molecules are synthesized from the terpene part, geranyl pyrophosphate from the plastidic isoprene pathway, and alkylresorcinol olivetolic acid from the polyketide pathway [ 14, 15].
Under normal conditions, expression of MHC molecules inhibits killing by NK cells, while absence of MHC molecules in infected or stressed cells allows cell-mediated cytotoxicity to occur.
The expression of CD94 and KIRs on human NK cells is important as interactions between these inhibitory receptors and self MHC class I molecules prevent killing of 'self' cells, whereas lack of MHC class I expression on a cell induces an NK cell response [36] [38].
Functional analyses indicated that these molecules possess killing activity in mammalian cell lines upon overexpression or following activation by apoptotic stimuli, suggesting similar pro-apoptotic functions in the extrinsic pathway as those in mammals.
By this study, it becomes easy to optimize the lethal doses of any molecule without killing any animal, which reduces the cost [ 45].
These data indicate that chimeric h/oFas is a functional molecule with killing activity; the putative death domain in Medaka Fas cytoplasmic tail is capable of transmitting apoptotic signals to mammalian cells in response to exogenous stimuli.
They attacked and broke down - "killed" - other molecules.
Since these molecules kill their target cells rapidly and mainly by perturbing the integrity of the plasma membrane, resistance is less likely to occur.
