Before revision:  The model can be used as a building block (translation module) for more complex models of cellular processes  .
After revision:  The model can be used as a building block (translation module) for more complex models of cellular processes . We demonstrate the utility of the model in two examples. First, we determine the critical parameters of the single protein synthesis for the case when the ribosomal units are abundant. Second, we demonstrate intrinsic bi-stability in the dynamics of the ribosomal protein turnover and predict that a minimal number of ribosomes should pre-exists in a living cell to sustain its protein synthesis machinery, even in the absence of proliferation .