As receptor signaling and host protein–protein interactions are critical to guide productive virus uptake , unraveling higher-order receptor complexes will help understand virus host cell invasion upon virus binding to a receptor, intracellular protein networks may change and such alterations may trigger virus uptake.
The interactions between the virus and the host induce multiple cellular responses that modify normal cell function and can lead either to clearing of the virus or to enhanced virus replication and pathogenesis. Virus entry pathways are largely defined by the interactions between virus particles and their receptors at the cell surface these interactions determine the mechanisms of virus attachment, uptake, intracellular trafficking, and, ultimately, penetration to the cytosol.
The virus–receptor interaction is exquisitely specific, and a single amino acid change in the receptor can completely abrogate this activity thus, the presence of a specific receptor is often a critical determinant in the species specificity of virus infection, and the cell specificity of receptor expression can be a decisive factor in the disease specificity of a virus.
Examples of virus–receptor interactions (a) cross‐section of part of the human rhinovirus capsid shows a depression surrounding the 5‐fold axis (top of figure) with a narrow channel structure in the middle. Home » courses » biology » virus-host interactions in infectious diseases » lecture summaries lecture summaries course home.
Biology ii module 2: viruses search for: virus infections and hosts the specificity of this interaction determines the host—and the cells within the host—that can be infected by a particular virus as a protein in the viral capsid binds to its receptor on the host cell, the virus may be taken inside the cell via a vesicle during. Virus–receptor interactions play a key regulatory role in viral host range, tissue tropism, and viral pathogenesis viruses utilize elegant strategies to attach to one or multiple receptors, overcome the plasma membrane barrier, enter, and access the necessary host cell machinery. Cell host & microbe short article structure and receptor binding of the hemagglutinin from a human h6n1 inﬂuenza virus netanel tzarum,1 robert p de vries,2,3,4,6 xueyong zhu,1 wenli yu,1 ryan mcbride,2,3,4 james c paulson,2,3,4, and ian a wilson1 ,5 1department of integrative structural and computational biology 2department of cell and molecular biology.
Initial encounters between a virus and a host cell are mediated through viral surface components, either membrane glycopro-teins or sites on a viral capsid (marsh and helenius, 2006), bind- host–pathogen interactions the cell biology of receptor-mediated virus entry joe grove and mark marsh. The virus-host interaction: within-host barriers cell entry-exit and receptor biology for a virus shed by one host to infect another, it must breach entry barriers (eg, mucus, alveolar macrophages, and epithelium) and find its way to tissues in which it can replicate.