Global resource distribution: allocation of actin building blocks by profilin.
How cells regulate the distribution of a limited pool of actin between two competing structures has long been a mystery. Complementary studies from Suarez et al. (2015) and Rotty et al. (2015) now show that profilin controls the partitioning of actin monomers between competing actin networks assembled by Arp2/3 complex and formins or Ena/VASP.
Henty-Ridilla JL, Goode BL