Quaternary structure

Quaternary Structures Nomenclature
The number of subunits in a complex are described using names that end in -meric ("mer" is Greek for "part, subunit").
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Quaternary structure
In biochemistry, many proteins are actually assemblies of more than one protein molecule, which in the context of the larger assemblage are known as protein subunits.
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Quaternary structure
The images (courtesy of Dr. D. R. Davies) represent the tertiary structure of the antigen-binding portion of an antibody molecule.
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quaternary structure
The particular shape of a complex, aggregate protein, defined by the characteristic three-dimensional arrangement of its constituent subunits, each a polypeptide.
queen ...
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quaternary structure - the interconnection and arrangement of polypeptide chains within a protein. Only proteins with more than one polypeptide chain can have quaternary structure.
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Quaternary structure
Some proteins contain two or more polypeptide chains that associate to form a single protein. These proteins have quaternary structure. For example, hemoglobin contains four polypeptide chains.
Denaturation ...
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quaternary structure In some proteins, a fourth structural level created by interactions with other proteins. Aspect of protein structure determined by the number and arrangement of polypeptides in a large protein such as hemoglobin. PICTURE ...
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quaternary structure The three-dimensional structure of a multisubunit protein.
A B C DE F G HI J K LM N O PQ R ST U V WX Y Z ...
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There is a higher order of structure which is called "quaternary" wherein different subunits bind to and work in concert with other identical member or even a different protein. This quaternary structure describes the larger super molecular assembly ...
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