subunit

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sub·u·nit

(sŭb'yū-nit),
1. A unit that forms a distinct part of a larger structure.
See also: monomer.
2. The single protein or polypeptide chain that can be separated from an oligomer protein without cleaving covalent bonds other than disulfide bridges between cysteinyl residues.
3. A single biopolymer separated from a larger multimeric structure.

subunit

(sub'u?nit)
In chemistry, a portion of a compound that represents a smaller part of the molecule than the remainder of the substance.
See: beta subunit
References in periodicals archive ?
Effect of 30 mM N supplied after V5 and R5 on relative amounts of seed storage protein subunits at maturity (60 d after flowering).
This set of translation factors plays a role in activating mRNA translation into a string of amino acids, ultimately forming proteins and protein subunits that control cell division.
Scientists have known for years that potassium channels are composed of four identical protein subunits that form a complex.
The polypeptides had electrophoretic mobilities closely approximating those of the Ku protein subunits identified in HeLa cells ([ILLUSTRATION FOR FIGURE 1A OMITTED], lane A).
The flours of Pakistani wheat varieties/lines were evaluated for their dough characteristics (farinographic) and protein subunits (PAGE) associated with the texture of the end-product (naan).
But with millions of cells, all carrying the human disease, to work with, Zhang's research group discovered the source of the tangles in the protein subunits that compose the neurofilaments.
But the shell is non-uniform and asymmetrical; uncertainty remained about the exact number of proteins involved and how the hexagons of six protein subunits and pentagons of five subunits are joined.
Although the contributing factors to these discrepancies are not fully understood, the source of soybeans and processing procedures of the protein or ISF are believed to be important because of their effects on the content and intactness of certain bioactive protein subunits.
Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) was performed according to the method of Laemmli (1970) to fractionate protein subunits of untreated and irradiated CS.
This is a large hollow cylinder formed from 28 protein subunits in stacked rings with 'caps' at each end (Figure 2).
The researchers broke the virus apart chemically and extracted the spilled RNA, then allowed the protein subunits to reassemble into a sphere with a cavity 18 nanometers in diameter.
Immunization with H pylori protein subunits in humans has shown adjuvant-related adverse effects and only moderate effectiveness.