Raffaello Potestio et al. assess, on the basis of presently
available structural data, the extent to which knotted proteins
are isolated instances in sequence or structure space, and use
comparative schemes to understand whether specific protein
segments can be associated with the occurrence of a knot in the
native state.
Deusdedit Lineu Spavieri Jr. et al. analyze how the
representation of motion information in the fly's nervous system
changes with temperature and luminance, and find that the mean
firing rate, but not firing precision, changes with temperature,
while both are affected by mean luminance.
Dobrowsky et al. (The Johns Hopkins University) examine the
initial interaction of HIV particles with the surface of target
cells. These findings could give a valuable boost to the
development of new therapies preventing HIV infection.