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.


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 ?
Purification and crystallization of the yeast elongation factor eEF2.
Endogenous ADP-ribosylation for eukaryotic elongation factor 2: evidence of two different sites and reactions.
Molecular cloning, characterization and expression of an elongation factor alpha gene in maize.
Protein synthesis, elongation factor EF-1[Alpha] expression and longevity in Drosophila melanogaster.
However, in this study, researchers have shown for the first time that the poxA enzyme steps in and directly attaches an amino acid to the Elongation Factor P protein, rather than to the tRNA.
The low expression levels of elongation factor Tu in the livers of ketotic cows minimize protein synthesis, indicating that most glucogenic amino acids take part in the Krebs cycle and gluconeogenesis, which has limited the capacity for protein synthesis so that the protein synthetic machinery is down-regulated.
Characterization of maize elongation factor 1A and its relationship to protein quality in the endosperm.
Minimalist aminoacylated RNAs as efficient substrates for elongation factor Tu.
In the case of the elongation factor tree, we have shown that the positions that support the bacterial rooting in classical phylogenies are the most variable ones, i.
Phylogenetic place of a mitochondrion-lacking protozoan, Giardia lamblia, inferred from amino acid sequences of elongation factor 2.
The neat resin shows fracture toughness values that are a factor of four greater and elongation factors two to three times better than previous materials.
Phylogenetic analyses based upon comparisons of 18S ribosomal RNA molecules (1), as well as elongation factors (2), identify microsporidia as one of the deepest branching lineages of the eukaryotic line of descent.