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cccDNA (covalently closed circular DNA) is a special DNA structure that arises during the propagation of some viruses in the cell nucleus and may remain permanently there. It is a double-stranded DNA that originates in a linear form that is ligated by means of DNA ligase to a covalently closed ring.
This cccDNA serves as a template for transcription of four viral mRNAs by host RNA polymerase. The largest mRNA, (which is longer than the viral genome), is used to make the new copies of the genome and to make the capsid core protein and the viral DNA polymerase .
The structure of hepatitis B virus. Hepatitis B virus is a member of the Hepadnavirus family. [11] The virus particle, called Dane particle [12] (), consists of an outer lipid envelope and an icosahedral nucleocapsid core composed of protein.
Circular DNA is DNA that forms a closed loop and has no ends. Examples include: Plasmids, mobile genetic elements; cccDNA, formed by some viruses inside cell nuclei; Circular bacterial chromosomes
United States Army Regional Correctional Facility – Europe (USARCF-E) is the only Department of Defense, Level 1 corrections facility in the European and African theaters and is located at Sembach Kaserne, Germany. [1] USACF-E falls up under the 18th MP BDE.
It is headquartered in Bonn, Germany. The core tasks of the BfArM as a regulatory authority include the approval and registration of medical devices and products, including drugs in the special therapeutic areas of herbalism and paraherbals, as well as the identification, assessment and defence against drug risks (pharmacovigilance).
HBeAg is an antigen that can be found between the icosahedral nucleocapsid core and the lipid envelope (the outer most layer of the hepatitis b virus).However, HBeAg is considered "nonparticulate" or "secretory". [2]
The German Cancer Research Center (known as the Deutsches Krebsforschungszentrum or simply DKFZ in German) is a national cancer research center based in Heidelberg, Germany. It is a member of the Helmholtz Association of German Research Centres, the largest scientific organization in Germany. Main building