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Topic: Ions, acidicty, protein denaturation and my confusion.  (Read 408 times)

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Offline Carmel

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Ions, acidicty, protein denaturation and my confusion.
« on: May 19, 2019, 06:55:13 AM »
Hello everyone,

I understand how acidicity causes dentauration of proteins.

My question: why the hydrogen ions are the ones deciding about acidicity?

Why, for example, high concentration of sodium (which also brings a lot of electric charge) don't cause the same - denaturation by interaction with electric charges of protein aminoacids?

I wish a good day to everyone, whoever reads this  :)

Offline AWK

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Re: Ions, acidicty, protein denaturation and my confusion.
« Reply #1 on: May 19, 2019, 08:35:00 AM »
Quote
My question: why the hydrogen ions are the ones deciding about acidicity?
This is a definition of acids.

There are many factors that cause protein denaturation
https://wiki2.org/en/Denaturation_(biochemistry)
« Last Edit: May 19, 2019, 03:19:08 PM by Borek »
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Offline Carmel

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Re: Ions, acidicty, protein denaturation and my confusion.
« Reply #2 on: May 19, 2019, 08:52:58 AM »
Thank you for your answer.

Unfortunatly it doesn't help a lot and the link doesn't work.

Once again:

Why high contentration of sodium ions doesn't make proteins loose secondary or tertiary structure?

What makes them diffrent from hydrogen ions in this matter?

Offline AWK

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Re: Ions, acidicty, protein denaturation and my confusion.
« Reply #3 on: May 19, 2019, 10:47:41 AM »
From wikipedia: Denaturation - "a concentrated inorganic salt"
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Offline Carmel

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Re: Ions, acidicty, protein denaturation and my confusion.
« Reply #4 on: May 19, 2019, 01:40:12 PM »
Thank you.
« Last Edit: May 19, 2019, 02:23:25 PM by Carmel »

Offline Borek

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Re: Ions, acidicty, protein denaturation and my confusion.
« Reply #5 on: May 19, 2019, 03:20:39 PM »
Link works now, final parenthesis was removed by the forum's automatic system (but come on, you could easily find the subject in wiki).
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info

Offline ArinaDS

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Re: Ions, acidicty, protein denaturation and my confusion.
« Reply #6 on: May 30, 2019, 07:35:03 AM »
Quote
My question: why the hydrogen ions are the ones deciding about acidicity?
This is a definition of acids.
 Acidity is usual for hydrogen ions and if you are studying chemistry, biology and interested in nursing, let's visit https://au.edubirdie.com/help-with-nursing-assignments for ordering nursing assignments. There are a lot of factors that should be mentioned in your work. Also, there are many factors that cause protein denaturation
https://wiki2.org/en/Denaturation_(biochemistry)

But why the hydrogen ions are the ones deciding about acidicity? What is the main factor of it?


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