@article{90296, author = {Monica Skoge and Sahin Naqvi and Yigal Meir and Ned Wingreen}, title = {Chemical Sensing by Nonequilibrium Cooperative Receptors.}, abstract = { Cooperativity arising from local interactions in equilibrium receptor systems provides gain, but does not increase sensory performance, as measured by the signal-to-noise ratio (SNR) due to a fundamental tradeoff between gain and intrinsic noise. Here we allow sensing to be a nonequilibrium process and show that energy dissipation cannot circumvent the fundamental tradeoff, so that the SNR is still optimal for independent receptors. For systems requiring high gain, nonequilibrium 2D-coupled receptors maximize the SNR, revealing a new design principle for biological sensors. }, year = {2013}, journal = {Phys Rev Lett}, volume = {110}, month = {06/2013}, issn = {1079-7114}, doi = {10.1103/PhysRevLett.110.}, language = {eng}, }