Figure 3

Three-dimensional structures of nsLTPs. NsLTPs share a common fold that is composed of 4 α-helices (highlighted in green) and stabilized by 4 disulfide bonds (shown in red) to form a central tunnel for ligand interaction (A). The distribution of hydrophilic (blue) and hydrophobic (red) amino acids over the molecular surface is depicted in B. All models were obtained from the Protein Structure Database http://www.pdb.org/pdb/home/home.do and visualized with chimera http://www.cgl.ucsf.edu/chimera/