Figure 3
From: X-ray sequence and crystal structure of luffaculin 1, a novel type 1 ribosome-inactivating protein
The presence of two molecules in the asymmetric unit facilitates sequence identification. (a) shows residues 3 and 64 in molecule A and B of luffaculin 1 contoured at 2σ and these residues are different from luffin a. (b) shows residues 46, 94 and 129 with clear electron density in molecule A and B contoured at 2σ. (c) shows residue 185 with weak electron density in molecule B can be clearly recognized as Ile in the electron density of molecule A.