The Mx1 protein in macrophages appears to specifically exist to respond to this pathogen.
The Mx1 protein in macrophages appears to specifically exist to respond to this pathogen. The B form of this pathogen lacks an M2 proton channel, making that form immune to amantadine. This virus can undergo reassortment since it contains multiple distinct negative-sense RNA segments which can be exchanged when multiple strains of it coexist in a given cell. One surface glycoprotein found on these orthomyxoviruses cleaves sialic acids from newly-synthesized virions, enabling their escape from the cell. That protein, which is inhibited by drugs like oseltamivir, has nine known forms and is neuraminidase. This virus's hemagglutinin protein can only be cleaved by proteases in the respiratory tract. For 10 points, name this virus whose H1N1 form caused a pandemic in 1918.
The Mx1 protein in macrophages appears to specifically exist to respond to this pathogen.
 influenzavirus