elongation factor

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e·lon·ga·tion fac·tor

proteins that catalyze the elongation of peptide chains during protein biosynthesis.
Synonym(s): transfer factor (3)

e·lon·ga·tion fac·tor

(ē-long-gā'shŭn fak'tŏr)
Proteins that catalyze the elongation of peptide chains during protein biosynthesis.
Synonym(s): transfer factor (3) .

elongation factor (EF)

one of a group of special proteins required for the elongation process in TRANSLATION.

elongation

1. in protein synthesis, cyclic process of growth of a polypeptide chain from mRNA attached to ribosomes. Requires mRNA, ribosomes, activated aminoacyl-tRNA, elongation factor EF-Tu activated with GTP.
2. in fatty acids, a process of adding carbon from acetyl CoA to a lengthening acyl chain. Mechanism for achieving diversity of fatty acids in biological systems.

elongation factor
one in a group of proteins involved in the elongation of polypeptide chains during protein synthesis.
References in periodicals archive ?
ADP-ribosylation of elongation factor 2 by diphtheria toxin: NMR spectra and proposed structures of ribosyl-diphthamide and its hydrolysis products.
Mechanism of action of Pseudomonas aeruginosa exotoxin A in experimental mouse infections: adenosine diphosphate ribosylation of elongation factor 2.
The SS1P molecule is an ingenious example of protein engineering: the native Pseudomonas exotoxin protein consists of three domains: domain I targets cell surface receptors, domain II functions to translocate the molecule across a cell membrane and into the cell interior, and domain III catalyzes irreversible ADP ribosylation and inactivation of elongation factor 2 (EF2).