Now it is an accepted fact that plant growth-promoting rhizobacteria (PGPR) can increase the productivity of several crops. The main objective of the present study was to find if there are any differences in protein content in the seeds of soybean (Glycine max L. MERR.). Using spectrophotometric methods for analyzing the protein contents and electrophoretic methods for qualitative analysis it was observed that no major modifications occur in protein spectrum. Looking at the quantitative side there was a small improvement in protein quantity.