Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of AP-1 complex subunit beta-1 could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) AP1B1.
Supplier Page from United States Biological for AP-1 Complex Subunit beta-1, Recombinant, Human, aa1-584, His-Tag, Myc-Tag