More observed Beta sheets than Alpha helices as temperature increases

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SUMMARY

The discussion centers on the observation that beta sheets become more prevalent than alpha helices as temperature increases in protein structures. Experimental studies indicate that at lower temperatures, alpha helices dominate, but as temperatures rise, the breaking of outer hydrogen bonds enhances the hydrophobic effect, favoring the formation of beta sheets. The participants express a need for further clarification on the experimental methods used to reach these conclusions and the underlying mechanisms driving this structural shift.

PREREQUISITES
  • Understanding of protein secondary structure, specifically alpha helices and beta sheets.
  • Knowledge of thermodynamics as it relates to protein folding and stability.
  • Familiarity with hydrogen bonding and its role in protein structure.
  • Basic principles of the hydrophobic effect in biochemistry.
NEXT STEPS
  • Research the impact of temperature on protein folding dynamics.
  • Investigate the role of hydrogen bonds in stabilizing protein structures.
  • Explore the hydrophobic effect and its influence on protein conformation.
  • Examine experimental methods used in protein structure studies, such as circular dichroism or NMR spectroscopy.
USEFUL FOR

This discussion is beneficial for biochemists, molecular biologists, and researchers studying protein structure and dynamics, particularly those interested in the effects of temperature on protein folding and stability.

Ran4
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From an experimental study I've found that alpha helices are formed more often than beta sheets when the temperature is low, but when the temperature increases the beta sheets becomes more common. I'm trying to figure out why.

As temperature increases, the outer hydrogen bonds of a structure will start to break, which will increase the hydrophobic effect, but how does that make beta sheets more common? Or is that not relevant in deciding which structure is most likely to form?
 
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Ran4 said:
From an experimental study I've found that alpha helices are formed more often than beta sheets when the temperature is low, but when the temperature increases the beta sheets becomes more common. I'm trying to figure out why.

As temperature increases, the outer hydrogen bonds of a structure will start to break, which will increase the hydrophobic effect, but how does that make beta sheets more common? Or is that not relevant in deciding which structure is most likely to form?

I doubt I could be the one to answer this but here is just no context provoded for anyone to answer except by guessing what you are talking about. Experimental study of exactly what by what methods?
 


epenguin said:
I doubt I could be the one to answer this but here is just no context provoded for anyone to answer except by guessing what you are talking about. Experimental study of exactly what by what methods?

I don't know. The goal of the task is to just find some reason as to why beta sheets are more common at higher temperatures. There is very little information given.
 

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