Suppose that there is a protein consisting of two polypeptide chains with the given sequences in the picture. Before performing Edman sequencing method, it is required to identify the protein's amino...

Suppose that there is a protein consisting of two polypeptide chains with the given sequences in the picture.

Before performing Edman sequencing method, it is required to identify the protein's amino acid composition first. Explain why it is required to do the said step first before doing Edman sequencing method.

Extracted text: Subunit a: L-A-D-C-S-T-C-W-A-S-A-R-A-C-A-K-A-N-C-E-I-A-M Subunit B: G-P-C-W-I-A-R-S-C-T-E-T-W-C-Y-V-V-M-L-C-K-A-D