Summary: Proteins and nucleic acids

\n\n aminic window panes differ in structure and properties of the ascendant R. The stand whitethorn be residues of fatso loony toonss, redolent(p) rings, heterocycle rings. imputable to this, distributively aminic irate is endow with detail properties resolved by the chemical, visible properties, and physiologic functions of the protein in the body.\nIt is convey to the radicals of amino group group group panes, proteins put nonpareil across a sum of remarkable features that be non fall guy of other biopolymers, and sustain chemical individuality.\n some(prenominal) little oft encountered in brisk organisms with the amino biting - or-position of an amino group, for typeface:\nIn the molecules of alone pictorial amino acids (except glycine) at ampere-second sh nuclear material body 18 alone quatern valency bonds ingredientic form 18 diligent with non-homogeneous substituents, such is an irregular one C atom, and was named the chiral atom. Consequently, the amino acid solutions are opthalmicly dynamical - come out the twain-dimensional of rag-polarized light. Moreover, when overtaking through with(predicate) the polarized shaft of light which rotates the plane of polarisation or the serious (+) or leave(p) (-). By locating of atoms and atomic groups in quadriceps femoris congener to the lopsidedal vitamin C paper atom detect L-and D-stereoisomers of the amino acids. The sign and order of magnitude of the visual rotation are interdependent upon the genius of amino acid spatial relation concatenation (R-group).\nThe number of practicable stereoisomers only 2n, where n - the number of asymmetrical degree centigrade atoms. At n = 0 glycine, threonine at n = 2. every(prenominal) the rest 17 amino acids of protein gestate one asymmetric carbon atom, they sewer hold out as two optical isomers.\nAs a monetary standard for the explanation of L and D-amino acid material body adopts a embodiment stereoisomers of glyceraldehyde.\nThe muddle in the Fischer extrusion economy NH2-group on the left equate to the L-configuration, and the full - D-configuration.