The paper describes both wild-type and mutant cells of G protein cycle by using different values of G protein deactivation. We chosed the wild-type, k=0.11 s-1. The unit of the concentration for the proteins are numbers of molecules per cell. Figure5(A) was reproduced with COPASI 4.0 (Build 18) and SBML_odeSolver. Figure5(B) was reproduced with COPASI 4.0 (Build 18). To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to CC0 Public Domain Dedication for more information. In summary, you are entitled to use this encoded model in absolutely any manner you deem suitable, verbatim, or with modification, alone or embedded it in a larger context, redistribute it, commercially or not, in a restricted way or not. To cite BioModels Database, please use: Li C, Donizelli M, Rodriguez N, Dharuri H, Endler L, Chelliah V, Li L, He E, Henry A, Stefan MI, Snoep JL, Hucka M, Le Novère N, Laibe C (2010) BioModels Database: An enhanced, curated and annotated resource for published quantitative kinetic models. BMC Syst Biol., 4:92.