Viral Replication Cycle

Poliovirus replication proteins localize at membranous vesicles presumably originated from traffic vesicles between endoplasmic reticulum and Golgi apparatus. Attachment requires specific interactions between components of the virus particle eg capsid proteins or envelope glycoproteins and components of the host cell eg a glycoprotein or carbohydrate moiety. All viruses follow the same six basic steps when replicating Figure 3211.

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Lysogenic Viruses Are Viruses That Have Dormant Stages Which Means That It Could Have Periods Where They Don T Effect The Organism Microbiology Cycle Biology

Its ready to make copies of itself lyse the cell and get its army out into infecting other cells.

Viral replication cycle. 1 Viral Replication Scott M. So now you should have a good idea of what the lytic and lysogenic cycles are in viral replication. During the lytic cycle of viral replication the virus hijacks the host cell degrades the host chromosome and makes more viral genomes.

Replication between viruses is greatly varied and depends on the type of genes. Some of the criteria that are required to be fulfilled in order to viral replication are. Viral replication is a biological process in which viruses increase their number by replicating their genome within the host cell.

Viral proteins on the capsid or phospholipid envelope interact with specific receptors on the host cellular surface. He also shows how viruses can pick up new genetic material and ho. The critical first step in the virus replication cycle is the attachment of the virus particle to a host cell.

Assembly - viral components and enzymes are produced and begin to assemble. Although the replicative life cycle of viruses differs greatly between species and category of virus there are six basic stages that are essential for viral replication. How viruses do this depends mainly on the type of nucleic acid DNA or RNA they contain which is either one or the other but never both.

1 entrance into the cell and release of the genome uncoating 2 transcription of the viral genes and 3 translation of the mRNAs to form viral proteins 4 replication of the viral genome 5 assembly of new viral particles in the cell and release of the complete virions from the host cell 6. For a specific virus to replicate within a specific host cell certain condition must be fulfilled. Before a virus can do anything else it must 1 bind to a host cell adhesion or attachmentThis binding occurs between glycoprotein spikes on the surface of the viral particle and receptors on the surface of the host cell.

It is not clear whether the poliovirus replication complex is outside or inside the vesicle. Viral Replication Cycle Attachment from Chapter 4 It is important to remember that viruses must traverse the epithelial layer except in some instances and that is no small task for something that has no locomotion. Virus are the obligate intra cellular particles they replicate inside host cell only.