We have combined the eb-MFCC-MBE(2) scheme, which is a simple fragmentation methods for proteins that includes a consistent two-body correction, with the density-based many-body expansion that was previously developed for molecular clusters. The db-MBE provides a density-based correction to the total energy, which can be calculated from only the electron densities of the considered fragments, i.e., no additional quantum-chemical calculations are required.