id author title date pages extension mime words sentences flesch summary cache txt cord-306624-1mjmttec Wodrich, Harald A Capsid-Encoded PPxY-Motif Facilitates Adenovirus Entry 2010-03-19 .txt text/plain 11594 666 53 We show that the PPxY motif in protein VI is involved in its efficient microtubule-mediated transport and mutating it in the virus alters the intracellular targeting of Ads towards the MTOC region concomitant with a post-entry block in viral infectivity. To identify possible trafficking determinants, we analyzed the sequences of protein VI from several Ad serotypes and identified a highly conserved ubiquitin-ligase interacting motif present in PPxY-type viral late domains (PPxY, Figure S2 ). To determine whether the M1 mutation influences Ad cell entry, we performed a fluorescent focus forming assay and stained cells at 8, 12 and 24 h post-infection for expression of the E2A protein, which marks the appearance of viral replication centers ( Figure 2D and data not shown). In addition to the increase of protein VI capsid association, Ad5-VI-M1 appeared to be more evenly distributed throughout the cell and did not efficiently accumulate at the MTOC region ( Figure 3B , images to the left). ./cache/cord-306624-1mjmttec.txt ./txt/cord-306624-1mjmttec.txt