Figure 2
From: Enlarging the scenario of site directed 19F labeling for NMR spectroscopy of biomolecules

Protein structures. Immunoglobulin binding domain of Streptococcal protein G (GB1) (PDB: 1GB1) and Hen Egg White Lysozyme (HEWL) (PDB: 2VB1). Highlighted in blue their tyrosines.