Figure 6

MATR3 interaction with Rev requires HIV-1 RNA. A) Whole cell lysates from 293T cells expressing vHY-IRES-TK and Tat with or without Rev-EGFP were subjected to immunoprecipitation with anti-MATR3 antibodies or with anti-IgG (mock). The IP were subjected to nuclease treatment and the proteins were detected by immunoblotting. B) Whole cell lysates from 293T cells expressing either vHY-IRES-TK, or v653RSN or v653SN together with Tat and Rev-EGFP were subjected to immunoprecipitation with anti-MATR3 antibodies. Immunoblots from whole cell extracts are shown on the left (input). Endogenous β-actin was used as loading control. The immunoblot for p17* shows lack of Gag expression for the RRE deficient v653SN construct (bottom panel). Immunoprecipitations are shown on the right (IP).