Highly potent HIV inhibition: engineering a key anti-HIV structure from PSC-RANTES into MIP-1 beta/CCL4. - Gaertner H; Lebeau O; Borlat I; Cerini F; Dufour B; Kuenzi G; Melotti A; Fish RJ; Offord R; Springael JY; Parmentier M; Hartley O (Protein engineering, design & selection : PEDS, 2008)