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  1. Viral envelope. A viral envelope is the outermost layer of many types of viruses. [1] It protects the genetic material in their life cycle when traveling between host cells. Not all viruses have envelopes. A viral envelope protein or E protein is a protein in the envelope, which may be acquired by the capsid from an infected host cell.

  2. Virology Replication cycle of a coronavirus The 5' and 3' ends of the genome have a cap and poly(A) tract, respectively.The viral envelope, obtained by budding through membranes of the endoplasmic reticulum (ER) or Golgi apparatus, invariably contains two virus-specified glycoprotein species, known as the spike (S) and membrane (M) proteins.

  3. en.wikipedia.org › wiki › ORF1abORF1ab - Wikipedia

    ORF1ab (also ORF1a/b) refers collectively to two open reading frames (ORFs), ORF1a and ORF1b, that are conserved in the genomes of nidoviruses, a group of viruses that includes coronaviruses.The genes express large polyproteins that undergo proteolysis to form several nonstructural proteins with various functions in the viral life cycle, including proteases and the components of the replicase ...

  4. en.wikipedia.org › wiki › ArenavirusArenavirus - Wikipedia

    Viewed in cross-section, arenaviruses contain grainy particles that are ribosomes acquired from their host cells. It is from this characteristic that they acquired the name arena, from the Latin root meaning sand. [5] The ribosomal structures are not believed to be essential for virus replication. Virus particles, or virions, are pleomorphic ...

  5. Coronavirus envelope protein Coronavirus membrane protein Coronavirus nucleocapsid protein Coronavirus spike protein E E1 (HCV) E2 (HCV) Ebola viral protein 24 Env (gene) Envelope glycoprotein GP120 Epstein–Barr virus latent membrane protein 1 G Gp41 H ...

  6. Pages in category "Coronavirus proteins" The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes. 0–9 3C-like protease C Coronavirus envelope protein ...

  7. PDBsum. structure summary. The 3C-like protease ( 3CLpro) or main protease ( Mpro ), formally known as C30 endopeptidase or 3-chymotrypsin-like protease, [2] is the main protease found in coronaviruses. It cleaves the coronavirus polyprotein at eleven conserved sites. It is a cysteine protease and a member of the PA clan of proteases.