A chain


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A chain

1. the shorter polypeptide component of insulin containing 21 amino acyl residues, beginning with a glycyl residue (NH2-terminus); insulin consists of an A chain linked to a B chain by two disulfide bonds; the amino-acid composition of the A chain is a function of species;
2. in general, one of the polypeptides in a multiprotein complex.
References in classic literature ?
He was bound differently from the rest, for he had to his leg a chain so long that it was wound all round his body, and two rings on his neck, one attached to the chain, the other to what they call a "keep-friend" or "friend's foot," from which hung two irons reaching to his waist with two manacles fixed to them in which his hands were secured by a big padlock, so that he could neither raise his hands to his mouth nor lower his head to his hands.
And to be a fool--of that kind--is almost as bad as being a--a dog on a chain.
Nobody could doubt that he had wandered in Siberian forests, naked and girt with a chain.
The machining capabilities added in 1977 began a chain reaction of value-added services offered by the TB&A.
An S corporation may elect QSub status for a chain of eligible subsidiaries, if the line of ownership is not interrupted by an entity or individual other than the parent or its DE subsidiaries.
Continued restaurant expansion with a chain record of 73 new locations.
Thus, the merger of Target (T) into Acquiring (A) for Acquiring Parent's (AP) stock could have been followed by AP's transfer of A stock down a chain of successively controlled corporations.
James Katz, a marketing expert, has convinced Peter that it will be more profitable to establish a chain of retail stores to sell the toys directly to the public.