Stereographic superimposition of Fc/TM with the CD16-liganded human Fc structure corresponding to PDB code 1e4k
(Sondermann et al., 2000). Superimposition of Cα atoms of Fc/TM and 1e4k
(CH2 domain residues 236–342) was carried out using LSQKAB (Kabsch, 1976). For both chains of 1e4k
, the r.m.s. displacement was estimated at 1.9 Å, with a maximum displacement of 6.4 Å for the Cα of residue 286. Human CD16 and Fc/TM are colored green and orange, respectively. Chains A and B of 1e4k
are colored red and blue, respectively.