Fig. 3
From: Membrane Protein Profiling of Human Islets of Langerhans Using Several Extraction Methods
Venn diagram comparing the numbers and overlap of unique proteins from human pancreatic islets identified after total protein extraction and when all membrane protein enriching extraction methods were combined. The percentages of membrane proteins (MP) are also given. Protein identification, at >99%, requiring at least two unique peptides, at ≥95% confidence level, detected by LC-FTICR MS/MS, searched against the human Swiss-Prot database using MASCOT and X!Tandem