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Dictionary » S » Secondary structure

Secondary structure

Definition

noun

A structure of a biological molecule characterized by the local folding within the biopolymer as a result of hydrogen bonding (within the biopolymer).


Supplement

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

A secondary structure of a protein pertains to the folding of a polypeptide chain, resulting in an alpha helix, beta sheet or a random coil structure.

Another example of a secondary structure is that of a nucleic acid such as the clover leaf structure of tRNA.


See also: protein structure


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Re: I Need help in designing RNAi :?:

... where RNAi is more likely to target successfully (regions of less secondary structure). I've not used these packages, but looking for them is one avenue you might try. ...

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by jonmoulton
Thu Jun 25, 2009 6:46 pm
 
Forum: Molecular Biology
Topic: I Need help in designing RNAi :?:
Replies: 1
Views: 105

lots of questions of various topics........

... the idea is to increase contrast between stained and non stained structure. Some stains are called vital and do not kill a cell, while other ... is what do you know from the data you have at hand? We know that the secondary metabolite is inhibiting the growth of another bacteria and that ...

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by canalon
Fri Jun 12, 2009 2:11 pm
 
Forum: General Discussion
Topic: lots of questions of various topics........
Replies: 3
Views: 114

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. ... acids (Perutz, 1978). Both alpha and beta globin proteins share similar secondary and tertiary structures, each with 8 helical segments ...

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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. ... helices. At any rate it is vastly oversimplified and does not show the secondary or quaternary structure of hemoglobin. Yes sorry about ...

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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 ... helices. At 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
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