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.
References in periodicals archive ?
229-234) transition from [alpha]-form to [pi]-form and the simultaneous rotation of M234 side chain to the PBC (I204) and L233 side chain to the N3A-motif and [beta]-subdomain (L135, F136, L139, and F172).
This means that both the hydro- and oleo-phobicities of the air-side surface significantly increased with the introduction of the fluorinated side chains. This water contact angle is very close to that for the bisphenol-A type epoxy resin system (14) modified with the monofunctional epoxy monomer that has the same number of repeated units -[(C[F.sub.2]).sub.6]- in the fluorinated chain.
Side chains Compatibilizers Octane 3,7-Dimelhyl-6-octylene [M.sub.n] (main chain) (g/mol) A [check] 2200 B [check] 2200 C [check] 2200 D [check] 2200 Compatibilizers Side chains [M.sub.n] content(a) (g/mol) (mol%) A 28.3 3400 B 39.8 4000 C 45.8 4700 D 45.8 5200 (a) Side chains content = nl(m + n), In and n were shown in Scheme 1.
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).
Therefore, with a patient who has had a true IgE-mediated reaction to a penicillin, avoid using cephalosporins with a similar side chain. You may, however, give cephalosporins that have different side chains.
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.
A new rearrangement of the side chain-- Biological activity of side chain carbon homologues.
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 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.
(Aichi, Japan) has patented a novel enzyme which has an activity to release side chain carboxyl groups and ammonia from a protein by acting upon side chain amido groups in the protein.