Figure 2: The subcellular location and function of identified membrane proteins. a-Subcellular location of membrane proteins according to Uniprot database. The proteins originated from plasma membrane hold the largest proportion (38.3%). The second largest group is mitochondrial proteins (30.5%). Golgi apparatus proteins have the smallest percentage (2%). b-Functional classification of membrane proteins. Enzyme make up the largest group with 35.9% of the total membrane proteins and follow up are regulators (23.5%). A significant number of proteins (12.4%) have unknown function based on Uniprot database.