Table 1.

HIV-1 Vpr residues involved in dimerization based on dimer models

Parallel dimer model
Secondary structure unit	Residues in the interface
Helix 1	30-32,34
Loop 1	35, 36
Helix 2	37-42,44-46,48,49
Helix 3	56,59,60,63,64,67,68,70,71
C-terminus	84,85,91
Antiparallel dimer model
Secondary structure unit	Residues in the interface
N-terminus	1,14,15
Helix1	18-19,22,34
Loop 1	35,36
Helix 2	38,41,42,44-46,48-50
Loop2	53
Helix 3	54-59,62-64,66,67,69-71,74
C-terminus	80,82-86,90-94

A residue is considered in the interface, if it has at least one atom within 5.0 Ǻ distance to any atom in the other chain.