As an AI language model, I cannot perform experiments or analyze physical samples. However, I can provide you with an overview of how to determine the concentration and identity of proteins in a sample using electrophoresis analysis.To determine the concentration and identity of proteins in a sample, you can use a technique called sodium dodecyl sulfate-polyacrylamide gel electrophoresis SDS-PAGE . Here are the general steps involved in this process:1. Sample preparation: Mix the protein sample with a loading buffer containing SDS, which denatures the proteins and gives them a negative charge proportional to their size. Heat the sample to further denature the proteins.2. Gel preparation: Prepare a polyacrylamide gel with an appropriate percentage of acrylamide to separate the proteins based on their size. A stacking gel with a lower percentage of acrylamide is also prepared to concentrate the proteins before they enter the resolving gel.3. Loading and running the gel: Load the prepared protein samples and a molecular weight marker ladder into the wells of the gel. Apply an electric current to the gel, causing the negatively charged proteins to migrate towards the positive electrode. The proteins will separate based on their size, with smaller proteins moving faster through the gel.4. Staining and destaining: After electrophoresis, stain the gel with a protein-specific stain, such as Coomassie blue or silver stain, to visualize the protein bands. Destain the gel to remove excess stain and improve the contrast of the bands.5. Analysis: Compare the protein bands in the sample lanes to the molecular weight marker to estimate the size of the proteins. To determine the concentration of the proteins, compare the intensity of the bands to a standard curve generated using known concentrations of a reference protein.To identify the proteins, you can use a technique called Western blotting, which involves transferring the separated proteins from the gel to a membrane and probing with specific antibodies. Alternatively, you can excise the protein bands from the gel and analyze them using mass spectrometry for protein identification.Remember that the results and interpretation of electrophoresis analysis depend on the quality of the sample, the accuracy of the molecular weight marker, and the specificity of the staining or detection method used.