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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 ...
The third gives symbols listed elsewhere in the table that are similar to it in meaning or appearance, or that may be confused with it; The fourth (if present) links to the related article(s) or adds a clarification note.
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Equine arterivirus serine peptidase (EC 3.4.21.114) is an enzyme. [1] [2] [3] This enzyme catalyses the following chemical reactionCleavage of (Glu/Gln)-(Gly/Ser/Ala) in arterivirus replicase translation products ORF1a and ORF1ab
LSFW, meaning Less Safe For Work. Used in corporate emails to indicate that the content may be sexually explicit or profane, helping the recipient to avoid potentially objectionable material. MIA, meaning Missing In Action. Used when original email has lost in work process. NIM, meaning No Internal Message. Used when the entire content of the ...
In virology, a nonstructural protein is a protein encoded by a virus but that is not part of the viral particle. [1] They typically include the various enzymes and transcription factors the virus uses to replicate itself, such as a viral protease (3CL/nsp5, etc.), an RNA replicase or other template-directed polymerases, and some means to control the host.
A simplified drawing of the HBV particle and surface antigen. Purple = Lipid Envelope, Red = Nucleocapsid Core (Note: This drawing is slightly misleading in that the nucleocapsid core is a single entity even though it is depicted as a light blue icosahedral line shape and a red ring of circles).
The genome organisation of HBV; the genes overlap. ORF S, in green, encodes HBsAg. HBsAg under a transmission electron microscope: the protein self assembles into virus-like particles