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The G:U cWW non-canonical base pairs are seen very frequently within double helical regions as this base pair is nearly isosteric to the other canonical ones. [74] Due to complication of strand direction, as elaborated in the Classification section ( Table 1 ), not all types of non-canonical base pairs can be accommodated within double helical ...
Lysine. Technically, any organic compound with an amine (–NH 2) and a carboxylic acid (–COOH) functional group is an amino acid. The proteinogenic amino acids are a small subset of this group that possess a central carbon atom (α- or 2-) bearing an amino group, a carboxyl group, a side chain and an α-hydrogen levo conformation, with the exception of glycine, which is achiral, and proline ...
Non-classical isosteres do not obey the above classifications, but they still produce similar biological effects in vivo. Non-classical isosteres may be made up of similar atoms, but their structures do not follow an easily definable set of rules. The isostere concept was formulated by Irving Langmuir in 1919, [3] and later modified by Grimm.
The set of position and momentum coordinates (,) are called canonical coordinates. (See Hamiltonian mechanics for more background.) The time evolution of Hamilton's equations is a symplectomorphism, meaning that it conserves the symplectic 2-form. A numerical scheme is a symplectic integrator if it also conserves this 2-form.
The two tautomers of an amino acid: (1) neutral and (2) zwitterionic forms In chemistry, tautomers (/ ˈ t ɔː t ə m ər /) [1] are structural isomers (constitutional isomers) of chemical compounds that readily interconvert.
An isomorphism between two structures is a canonical isomorphism (a canonical map that is an isomorphism) if there is only one isomorphism between the two structures (as is the case for solutions of a universal property), or if the isomorphism is much more natural (in some sense) than other isomorphisms.
Urdu in its less formalised register is known as rekhta (ریختہ, rek̤h̤tah, 'rough mixture', Urdu pronunciation:); the more formal register is sometimes referred to as زبانِ اُردُوئے معلّٰى, zabān-i Urdū-yi muʿallá, 'language of the exalted camp' (Urdu pronunciation: [zəbaːn eː ʊrdu eː moəllaː]) or لشکری ...
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