side chain


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chain

 [chān]
a collection of objects linked together in linear fashion, or end to end, as the assemblage of atoms or radicals in a chemical compound, or an assemblage of individual bacterial cells.
branched chain an open chain of atoms, usually carbon, with one or more side chains attached to it.
closed chain several atoms linked together so as to form a ring, which may be saturated, as in cyclopentane, or aromatic, as in benzene.
H chain (heavy chain) any of the large polypeptide chains of five classes that, paired with the L or light chains, make up the antibody molecule of an immunoglobulin; heavy chains bear the antigenic determinants that differentiate the classes of immunoglobulins. See also heavy chain disease.
J chain a polypeptide occurring in polymeric IgM and IgA molecules.
L chain (light chain) either of the two small polypeptide chains (molecular weight 22,000) that, when linked to H or heavy chains by disulfide bonds, make up the antibody molecule of an immunoglobulin monomer; they are of two types, kappa and lambda, which are unrelated to immunoglobulin class differences.
open chain a series of atoms united in a straight line; components of this series are related to methane.
chain reaction a chemical reaction that is self-propagating; each time a free radical is destroyed a new one is formed.
side chain a group of atoms attached to a larger chain or to a ring.

side chain

1. a chain of noncyclic atoms linked to a benzene ring, or to any cyclic chain compound;
2. the atoms of an α-amino acid other than the α-carboxyl group, the α-amino group, the α-carbon, and the hydrogen attached to the α-carbon.

side chain

(sīd chān)
1. A chain of noncyclic atoms linked to a benzene ring, or to any cyclic chain compound.
2. The atoms of an α-amino acid other than the α-carboxyl group, the α-amino group, the α-carbon, and the hydrogen attached to the α-carbon.

side chain

commonly referred to as −R; group that confers specific identity to compounds, particularly amino acids.
References in periodicals archive ?
This means that both the hydro- and oleo-phobicities of the air-side surface significantly increased with the introduction of the fluorinated side chains.
It has the same main chain and side chain content as polymer C, except polymer D has an active vinyl group at every side chain.
Derivatization from the common intermediate 9 again allowed us to access a variety of side chain modified analogues by only varying the final reaction (Fig.
The fundamental pattern-recognition approach in TEXTAL is based on extracting numeric features that attempt to capture relevant information about local electron density for various purposes (such as identifying C[alpha] atoms, comparing side chains, or detecting disulfide bridges).
Penicillin skin testing in patients with a history of penicillin allergy does not reliably predict allergy to a cephalosporin unless the side chain of the penicillin or ampicillin reagent is similar to the cephalosporin side chain being tested) The positive and negative predictive values of skin testing results for cephalosporins are not well established; if the haptens that cause cephalosporin allergy were known, cross-reactivity with penicillins could be assessed directly.
The side chain methyl group of T13 is essential in enforcing the on-face hydrogen bond geometry and preventing the hydroxyl group from forming other more favorable conventional hydrogen bonds.
All had similar pharmacological properties which differed only in intensity due to the nature and position of the side chains.
As described in the above two sections, the effects of fluorine substitution and carbon homologation in the side chain have been elucidated.
A schematic chemical formula of the three diamines (DABBE/j) containing biphenyl side chain with different length methylene spacers n = 0, 2, 6 is shown in Fig.
The lipophilic nonpolar side chain then binds to an area of the b receptor referred to as the exosite, a hydrophobic region.
The sticky ingredient is the side chain of an amino acid, 3,4-dihydroxy-L-phenylalanine (DOPA).
The film comprises a thermoplastic resin with a substituted or non-substituted imide group at a side chain of the resin and a thermoplastic resin with a substituted or non-substituted phenyl group and a nitrile group at a side chain of the resin.