quaternary structure


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quaternary structure

n.
The three-dimensional arrangement of the macromolecules making up a functional unit, such as that formed by four globin protein molecules to make hemoglobin or by histones interacting with DNA to make a nucleosome.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Analytical Gel Permeation Chromatography helps in protein fractionation, purification, molecular weight determination and also helps in determination of quaternary structure of purified protein.
Therefore, in this quaternary structure, the introduction of an additional cation (Mn) produces an effect of "dilution" of this cation in the chalcopyrite structure leaving the cell volume almost unchanged [12].
SWISS-MODEL: Modelling protein tertiary and quaternary structure using evolutionary information.
Despite this, says Ahnert, the organizing principles that underlie protein quaternary structure in nature are poorly understood.
As is well known, the prediction of protein quaternary structure attributes (such as monomer, dimmer, trimer, tetramer, pentamer, hexamer, heptamer, and octamer) plays an important role in the structure bioinformatics.
In the present study, total of 4154 monomeric proteins were obtained from PIQSI (quaternary structure database) [16].
In order to model quaternary structure, several pencil transferase pipe cleaner models can be bundled together to represent a type of protein composed of several polypeptide chains whose job is to bind and transport multiple pencils.
It is noteworthy that quaternary structure is essential for CTB function, but this is impossible in some expression systems (9), (11), (15).
This time he focuses upon The School of Athens and the quaternary structure of Quixote's first part.