raw MS MS sequence data checking for the neutral loss of the phosphate GSI-IX group. Analysis of structural data and structural model construction The 3D structure of Ali with wild type Gag p6 was predicted by homology modeling using Molecular Operating Environment. ray crystal structure of Gag p6 Ali was used as template structure. Inhibitors,Modulators,Libraries Energy calculation was achieved with AMBER ff99 force field and the GB VI implicit solvent energy function. Ne t, on the basis of the predicted structural model of Ali with wild type Gag p6, 3D structures of Ali with Gag p6S487A and phosphorylated Gag p6 Ser487 were constructed using Molecular Builder in MOE. 3D structures of Vpr with wild type Gag p6, Gag p6Ser487A, and phosphorylated Gag p6 Ser487 were also predicted by docking simulations with ASEdock module in MOE, because Inhibitors,Modulators,Libraries of no comple structure of Gag p6 Vpr.

The comple structure was estimated with a nuclear magnetic resonance structure of Vpr and a NMR structure around heli II domain of Gag p6. Substi tution and phosphorylation at Gag S487 were achieved with the Molecular Builder. Energy calculations Inhibitors,Modulators,Libraries in the docking simulations were achieved with the same force field as that for Gag p6 Ali . Finally, all of the constructed comple structures were thermodynamically optimized with energy minimization, to remove unfavorable steric contacts. Bimolecular fluorescence complementation assay To detect interaction of Gag with Vpr, we used the BiFC technique. Briefly, two fragments of Kusabira Green fluorescent protein are brought together by the interaction of two proteins fused to these fragments, thus allowing specific detection of interaction in living cells.

Vpr or Vpr Q44E were cloned into phmKGN MN and Gag or GagSer487A into phmKGC MC. 293T cells were cotransfected with 0. 7 ug of the Vpr construct and 0. 5 ug of the Gag construct. Two days post transfection, cells were harvested and then subjected to the flow cytometry for measuring BiFC signal as reported previously. Immunoprecipitation Cells were lysed in Lysis buffer containing Inhibitors,Modulators,Libraries 50 mM Tris HCl, 150 mM NaCl, 1 mM EDTA, 1 mM DTT with Complete protease inhibitor cocktail and PhosSTOP phosphat ase inhibitor cocktail. Lysate were cleared by centrifugation at 12,000 g for 15 min, followed by pull down using with anti Flag M2 affinity Gel. Samples were separated by SDS PAGE and analysed by Western blot analyses.

Single GSK-3 cycle virus release assays For infection based assays, cells were infected kinase inhibitor Enzalutamide with VSV G pseudotyped HIV 1 at an moi of 0. 01 or 0. 2 for eight hours and cultured for two days. In e periments using kinase inhibitors, cells were treated with each inhibitor at 12 h before virus infection. Virus containing supernatants were harvested and filtered to remove cell debris, and viral p24 antigens were mea sured using an ELISA kit. The cell lysates were prepared using HBST buffer containing a protease inhibitor cocktail. Immunoblotting as says and the antibodies used have been described previ ously. The culture supernatants