Words similar to quaternary
Example sentences for: quaternary
How can you use “quaternary” in a sentence? Here are some example sentences to help you improve your vocabulary:
Indeed, a correlation between EC50 values and quantum mechanics simulations strongly suggests the existence of a cation-pi interaction between a triptophan residue of the ligand binding pocket and the quaternary ammonium of acetylcholine [ 9 ] . A series of grid representations of the ligand binding pocket was generated that accounted for Van der Waals shape, electrostatic potential, as well as hydrogen bonding and hydrophobicity profiles.
We show that, in spite of the functional similarities, and the similar quaternary structures, there are three distinct superfamilies of SSAPs, namely the RecT/Redβ, RAD52 and ERF, that appear to be evolutionarily unrelated to each other.
Several lines of evidence, including genetic analyses, and similarities in biochemistry and quaternary structures, suggest that the E. coli RecT and phage λ Redβ proteins are functionally equivalent as mediators of single-strand exchange in DNA recombination [ 10 12 ] . However, no sequence similarity has been detected between these proteins leaving their actual evolutionary relationships unresolved.
The similarity between these two systems is further extended by the observation that the RecT/E system can complement mutations in the λ exo/Redβ system [ 10 12 ] . In eukaryotes, RAD52 protein has been shown to exhibit properties similar to those of RecT and Redβ proteins: it binds ssDNA and promotes strand exchange via the pairing of complementary single strands [ 6 13 ] . In vitro studies on quaternary structures have shown that the single strand annealing proteins (SSAPs), RecT, Redβ, ERF and RAD52, form similar helical super-structures [ 14 15 16 17 ] . This has led to the proposal that RecT, Redβ, ERF and the eukaryotic RAD52 function in an analogous fashion, and even are "structural homologs" [ 14 ] .
A formal charge of +1 was assigned to the quaternary ammonium group of acetylcholine and protonated nicotine.
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