title: Multispecies model with interconversion, chipping, and injection.
abstract: Motivated by the phenomenology of transport through the Golgi apparatus of cells, we study a multispecies model with boundary injection of one species of particle, interconversion between the different species of particle, and driven diffusive movement of particles through the system by chipping of a single particle from a site. The model is analyzed in one dimension using equations for particle currents. It is found that, depending on the rates of various processes and the asymmetry in the hopping, the system may exist either in a steady phase, in which the average mass at each site attains a time-independent value, or in a "growing" phase, in which the total mass grows indefinitely in time, even in a finite system. The growing phases have interesting spatial structure. In particular, we find phases in which some spatial regions of the system have a constant average mass, while other regions show unbounded growth.
authors: Department of  Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai-400005, India.
authors: Himani
authors: H
authors: Sachdeva
authors: Mustansir
authors: M
authors: Barma
authors: Madan
authors: M
authors: Rao
mesh_terms: D003198:Computer Simulation; D006056:Golgi Apparatus / Q000737:chemistry* / Q000502:physiology*; D008954:Models, Biological; D008956:Models, Chemical; D021381:Protein Transport / Q000502:physiology*