>d1ex4b2 c.55.3.2 (B:55-222) Retroviral integrase, catalytic domain {Human immunodeficiency virus type 1} dsspgiwqldcthlegkvilvavhvasgyieaevipaetgqetayfllklagrwpvktih tdngsnftgatvraacdwagikqvvesmnkelkkiigqvrdqaehlktavqmavfihnkk rkggiggysagerivdiiatdiqtkelqkqitkiqn