Question: Protein phosphorylation is a post-translational modification of proteins, was first reported in 1906 by which American biochemist who studied the structure and function of nucleic acids, at the Rockefeller Institute for Medical Research?
{'answer': 'Phoebus Aaron Theodore Levene', 'supporting_facts': [['Protein phosphorylation', 5], ['Phoebus Levene', 0]]}