Interaction of HIV capsids with the cellular protein cleavage-and-polyadenylation factor 6 at the inner side of nuclear pores promotes nuclear entry of the viral replication complex in primary human macrophages.
Structural, biochemical, and proteomic analyses of a four-subunit core module of the cleavage and polyadenylation specificity factor complex reveal its molecular architecture and specific determinants of polyadenylation signal recognition in human mRNAs.
A robust method to quantitatively visualize HIV-1 replication complexes in infected cells shows that these complexes remain associated with the viral capsid beyond nuclear import in primary macrophages.
Conformational flexibility in HIV-1 capsid, provided by cyclophilin A binding, facilitates evasion of capsid-targeting restriction factor MxB, while allowing sequence change to facilitate cytotoxic T-cell evasion.
CPEB4's switch from translational repressor to activator is regulated during cell cycle by hyperphosphorylation of its intrinsically disordered domain, which controls its phase-separation into RNA-containing liquid-like droplets.