open 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.

open chain

Orthopedics adjective Referring to a series of musculoskeletal links that are free to move on each other but capable of combining to support the body; the chain is said to be open when the distal link is free to move and closed when it is fixed; in OC motion, the calcaneum supinates and pronates about the subtalar joint
References in periodicals archive ?
They require more balance and coordination than open chain activities and are more sport-specific and time-efficient.
Along the way, Demaine, Rote, and Connelly also established that any open chain can always be straightened.
The city also plans to build dormitories covering an area of one million square metres outside the university campuses to solve student housing problems, and to open chain stores at schools.