Before revision:  We show by test examples and by a comparison with experimental data that our model allows reconstruction of the translocation  rates from mass spectroscopy data on digestion patterns and can be used to investigate the properties of transport in different experimental set-ups.
After revision:  We show by test examples and by processing experimental data that our model allows reconstruction of the translocation rates from mass spectroscopy data on digestion patterns and can be used to investigate the properties of transport in different experimental set-ups.