The presence of ~150 mM ions may also represent a cellular mechanism to prevent the insoluble proteins to access membranes.
Probably, unlike the P56S VAPB mutant which can be delivered to the ER without requiring the formation of aggregates due to the presence of the C-terminal ER-anchoring helix, most cytosolic insoluble mutants will not be able to access membranes under normal physiological conditions as they get aggregated immediately after synthesis and subsequently degraded by complex machineries.
This is very clear in examples such as alternating-access membrane transporters that alter their conformations substantially 2) The assumptions used for the input sequence alignments are wrong i) The interactions in the alignments are not homologous despite sequence similarity of the component parts.
Moreover, lysozymes do not have signal peptides or any other membrane-targeting system, but access the membrane structure through the action of holin molecules inserted into the cytoplasmic membrane [ 57].
Although the calpains have traditionally been considered to be cytosolic enzymes, there is evidence that calpain 2 is associated with cellular membranes through phosphoinositide binding, and this could give greater access to membrane bound ion channels [9], [37].
Both parts are contained within an insulated Styrofoam™ box with a hole in the lid for mosquitoes to access the membrane.
The results suggest that polysaccharide coated particles are more individually distributed while agglomeration of the uncoated particles limits the surface area availability and access to membrane bound organelles.
Only recordings with a drift of access and membrane resistances less than 20% were included for statistical analysis by Student's t-test.
Is there limiting access to membrane or to active NPFs?
Such data require confirmation and consequent speculation of a role for 11β-HSD1 in gating corticosteroid access to membrane MR [119], and perhaps GR, and thus modulation of rapid non-genomic effects, remains to be explored.
The greater protrusion height observed for the reconstituted proteins is likely a result of the AFM probe being able to access the membrane more easily due to lower hemichannel densities.
