Monday, March 14, 2022

 

Engineered Biological Switches

Scientists created DNA nanotube rails that branch in multiple directions, with each unique track made up of unique DNA patterns. Protein motors designed to recognize these patterns then carry their cargo down the desired tracks. Nanoswitchyards should help scientists better test and understand the real thing inside cells. They may also eventually help researchers steer different drug cargoes to different tissues or engineer novel DNA computers that respond to their environment. In the video, proteins called dyneins have been engineered to glide along DNA tracks. At a branch point, different DNA patterns of the tracks steer dyneins carrying orange fluorescent cargo to the left and dyneins carrying cyan fluorescent compounds to the right.

Video @ Science

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Thursday, March 03, 2022

 

How We Can Make Sense of Chaos

"Dynamical systems can be chaotic and impossible to predict, but mathematicians have discovered tools to help understand them". Full article by David S. Richeson at Quanta Magazine.

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