Selected Structural Similarities. Structures of HIV-1 and human proteins aligned using Dali. (A) IN (1ex4A) aligned with SMN2 (1g5vA) [51, 52]. (B) NXF1 (1ft8E) aligned with RT (1tl3A) [53, 54]. (C) gp41 (2cmrA) aligned with PTK2 (1k04A). [55, 56]. (D) RT (1lwcA) aligned with PLEC1 (1mb8A) [57, 58]. HIV-1 proteins are in blue, human proteins are in yellow.