Western Blot: RPL7 Antibody [NB100-2268] - Staufen1 co-fractionates with Gag and vRNA in gradient density fractionation analyses. HeLa cells were either mock transfected with empty vector, pcDNA3, or with a plasmid that expresses Staufen1-HA. The transfected cells were collected 24?h later, lysed and were either mock-treated or treated with RNAse A. The lysates were then fractionated on 5-50% sucrose gradients and 20 fractions were collected for further analysis by western blotting for viral and host proteins, as indicated. HIV-1 viral genomic RNA (vRNA, 9?kb) was assessed in each fraction by slot blot analysis. TL represents the total lysates. Image collected and cropped by CiteAb from the following publication (http://www.frontiersin.org/Journal/10.3389/fmicb.2012.00367/full), licensed under a CC-BY licence.