Know the Single-Receptor Sensing Limit? Think Again.

ABSTRACT: How cells reliably infer information about their environment is a fundamentally important question. While sensing and signaling generally start with cell-surface receptors, the degree of accuracy with which a cell can measure external ligand concentration with even the simplest device-a single receptor-is surprisingly hard to pin down. Recent studies provide conflicting results for the fundamental physical limits. Comparison is made difficult as different studies either suggest different readout mechanisms of the ligand-receptor occupancy, or differ on how ligand diffusion is implemented. Here we critically analyse these studies and present a unifying perspective on the limits of sensing, with wide-ranging biological implications.

SUBMITTER: Aquino G 

PROVIDER: S-EPMC4761375 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature