title: Diffusion-controlled reaction on a sink with two active sites.
abstract: We have presented an exact solution for the problem of diffusive binding to a spherical macromolecule with two axially symmetric active patches. A highly accurate approximate formula for an effective steric factor has been suggested. This model solution may serve as a benchmark for further studies of diffusive interaction in more realistic models of anisotropic reactivity.
authors: Institute of Applied Mechanics, Russian Academy of Sciences, 32a Lenin Avenue, GSP-1, 119991 Moscow, Russia. sergtray@mail.ru
authors: S D
authors: SD
authors: Traytak
authors: A V
authors: AV
authors: Barzykin