Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of Hemoglobin subunit gamma-2 could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) HBG2.
Supplier Page from United States Biological for Hemoglobin Subunit Gamma-2, Recombinant, Human, aa2-147, His-Tag, Myc-Tag