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Dictionary » Q » Quaternary structure

Quaternary structure

Definition

noun

A structural level wherein several proteins (or polypeptide subunits) interact through non-covalent bonds to form one functional protein complex.


Supplement

In proteins, there are four recognized levels of protein structure: primary structure, secondary structure, tertiary structure, and quaternary structure.

A quaternary structure of a protein refers to the assembly of multiple folded protein molecules in a multi-subunit complex.


See also: protein structure


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Re: Any SOLID arguments against evolution?

... are a lot in hemoglobin due to H, N, O), the stress put on any random structure from this imbalance alone would cancel at least half of the possibilities. ... that the polar bonds caused the secondary and tertiary, and then even a quaternary structure would be off the chart! To think that the DNA, ...

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by AFJ
Tue Jun 02, 2009 1:19 am
 
Forum: Evolution
Topic: Any SOLID arguments against evolution?
Replies: 106
Views: 16657

Re: Any SOLID arguments against evolution?

... are a lot in hemoglobin due to H, N, O), the stress put on any random structure from this imbalance alone would cancel at least half of the possibilities. ... any rate it is vastly oversimplified and does not show the secondary or quaternary structure of hemoglobin. Yes sorry about that but it ...

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by futurezoologist
Mon Jun 01, 2009 12:35 am
 
Forum: Evolution
Topic: Any SOLID arguments against evolution?
Replies: 106
Views: 16657

Re: Any SOLID arguments against evolution?

... He was saying they could be arranged randomly that number in primary structure, not secondarily, nor tertiarily, nor quaternarily as hemoglobin ... any rate it is vastly oversimplified and does not show the secondary or quaternary structure of hemoglobin.

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by AFJ
Sun May 31, 2009 9:30 pm
 
Forum: Evolution
Topic: Any SOLID arguments against evolution?
Replies: 106
Views: 16657

Re: Important unknown nanotech within humans

... eutectic solvents( which are soluble in celluose which comprises the structure of biological life). Deep eutectic solvents can be formed via various ... acid formaldehyde despite the fact it is illegal and carconigenic. Quaternary ammonium salts are also present in the environment in the forms ...

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by vincio
Tue Feb 10, 2009 7:22 am
 
Forum: Molecular Biology
Topic: Important unknown nanotech within humans
Replies: 28
Views: 6291

an enzyme is heated

... answer isn't right. I have forgotten one thing: hydrogen bonds are in quaternary structure yet! So it isn't a need to go on secondary structure as I wrote. The quaternary structure ...

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by MisterATP
Mon Jul 14, 2008 8:16 pm
 
Forum: Molecular Biology
Topic: an enzyme is heated
Replies: 6
Views: 706
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