Walking on chromosomes

Another passenger on chromosomes

A synaptic scaffold quiets T cells scaffolding protein at neuronal synapses has found its way to another kind of synapse—the immune synapse, which forms at the interface between antigen presenting cells and T cells. As shown by Xavier et al. on page 173, this multi-domain protein, called Dlg1, tempers the activity of both types of synapses. On the T cell side of the immune syn-apse, activated T...

Eyes on chromosomes.

zeste protein on polytene chromosomes

Between PREs on Different Chromosomes

Polycomb response elements (PREs) can establish a silenced state that affects the expression of genes over considerable distances. We have tested the ability of insulator or boundary elements to block the repression of the miniwhite gene by the Ubx PRE. The gypsy element and the scs element interposed between PRE and miniwhite gene protect it against silencing but the SCS' is only weakly effect...

Walking on real numbers

Motivated by the desire to visualize large mathematical data sets, especially in number theory, we offer various tools for representing floating point numbers as planar (or three dimensional) walks and for quantitatively measuring their “randomness.”