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light chain

noun
1.
Immunology. either of an identical pair of polypeptides in the antibody molecule that lie parallel to the upper parts of the heavy chain pair and are half the molecular weight.
Also called L chain.
Origin of light chain
1960-1965
1960-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for light chain
Historical Examples
  • To prevent such a catastrophe, a light chain or cord was worn, under or over the dress, at the level of the knees or just above.

  • She touched a small golden arrow that hung from a light chain about her neck.

    The Golden Amazons of Venus John Murray Reynolds
  • When I tie the dog up, I use a light chain, one end of which runs on a long trolley wire fastened between the house and a tree.

    Natural Wonders Edwin Tenney Brewster
  • This little cloth is supported round the waist by a thread, or light chain of tin and beads, but not totally confined thereby.

  • Women were employed extensively in the light chain trade, also in lacquering in the brass trade, and in many other occupations.

    Women in Modern Industry B. L. Hutchins
  • At the head of them was a tall, slender knight clad in light chain armor, his head covered only by a steel cap or bascinet.

  • Before him was a stairway, its lowest step blocked by a light chain.

    The Best Made Plans Everett B. Cole
  • They fastened him by means of a light chain and hoop that locked around his waist to a staple set in the floor near one wall.

    In the Orbit of Saturn Roman Frederick Starzl
  • Here, but a little to one side, she began to dig, and promptly uncovered a light chain.

    The House in the Water Charles G. D. Roberts
light chain in Medicine

light chain n.
One of a pair of polypeptide chains of low molecular weight that are components of an immunoglobin and are classified as one of two types: lambda or kappa.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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light chain in Science
light chain  
The smaller of the two types of polypeptide chains in an antibody molecule. A light chain consists of an antigen-binding portion with a variable amino acid sequence, and a constant region with an amino acid sequence that is relatively unchanging. The light chains are attached to the heavy chains so that the variable regions of both lie alongside each other. Compare heavy chain.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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