Virus proteins and nucleoproteins - an overview.- A structural view of negative sense rna virus nucleocapsid protein and its functions beyond.- Viral rna-dependent rna polymerases. a structural overview.- Filovirus filament proteins.- Structure and function of influenza virus ribonucleoprotein.- Structural homology between nucleoproteins of ssrna viruses.- Zika virus envelope protein and antibody complexes.- The retrovirus capsid core.- Nucleoprotein intermediates in hiv-1 dna integration: structure and function of hiv-1 intasomes.- Oligomerization of retrovirus integrases.- Structure and function of the human respiratory syncytial virus m2-1 protein.- Filamentous bacteriophage proteins and assembly.- Protein-rna interactions in the single-stranded rna bacteriophages.- The bacteriophage head-to-tail interface.- Beyond channel activity: protein-protein interactions involving viroporins.- Protein complexes and virus-like particle technology.- The role of flaviviral proteins in the induction of innate immunity.