The initial structural models of HBV-RT variants obtained from ITASSER in comparison to the corresponding part in the template crystal structure: A) HBV-RT5; B) HBV-RT1; C) HBV-RT4; D) HBV-RT2; E) HBV-RT3; F) Residues 1 to 320 of the HIV-RT/DNA-RNA/dATP crystal structure (PDB code: 4PQU). The 40 aa N-terminal of the HBV-RT structure are shown in orange, the hairpin structural element in the fingers domain are in red, and the rest of the structure are in cyan. (TIF 5479 kb)