Linear Epitope
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Linear Epitope
In immunology, a linear epitope (also sequential epitope) is an epitope—a binding site on an antigen—that is recognized by antibodies by its linear sequence of amino acids (i.e. primary structure). In contrast, most antibodies recognize a conformational epitope that has a specific three-dimensional shape (tertiary structure). An ''antigen'' is any substance that the immune system can recognize as being foreign and which provokes an immune response. Since antigens are usually proteins that are too large to bind as a whole to any Receptor (immunology), receptor, only specific segments that form the antigen bind with a specific antibody. Such segments are called ''epitopes''. Likewise, it is only the paratope of the antibody that comes in contact with the epitope. Proteins are composed of repeating nitrogen-containing subunits called amino acids. The linear sequence of amino acids that compose a protein is called its primary structure, which typically does not present as simple ...
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Schematic Diagram Showing Polyclonal Response By B Cells Against Linear Epitopes
A schematic, or schematic diagram, is a designed representation of the elements of a system using abstract, graphic symbols rather than realistic pictures. A schematic usually omits all details that are not relevant to the key information the schematic is intended to convey, and may include oversimplified elements in order to make this essential meaning easier to grasp, as well as additional organization of the information. For example, a subway map intended for passengers may represent a subway station with a dot. The dot is not intended to resemble the actual station at all but aims to give the viewer information without unnecessary visual clutter. A schematic diagram of a chemical process uses symbols in place of detailed representations of the vessels, piping, valves, pumps, and other equipment that compose the system, thus emphasizing the functions of the individual elements and the interconnections among them and suppresses their physical details. In an electronic circuit d ...
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Nitrogen
Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure, two atoms of the element bond to form N2, a colorless and odorless diatomic gas. N2 forms about 78% of Earth's atmosphere, making it the most abundant uncombined element. Nitrogen occurs in all organisms, primarily in amino acids (and thus proteins), in the nucleic acids ( DNA and RNA) and in the energy transfer molecule adenosine triphosphate. The human body contains about 3% nitrogen by mass, the fourth most abundant element in the body after oxygen, carbon, and hydrogen. The nitrogen cycle describes the movement of the element from the air, into the biosphere and organic compounds, then back into the atmosphere. Many indus ...
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