What is the size of amino acids in nm or Angstroms?

In summary, the physical size of amino acids can range from 1-2 nanometers and plays a critical role in determining protein structure. There are variations in size among different types of amino acids, and scientists use techniques such as X-ray crystallography and NMR spectroscopy to measure their size. Changes in size can affect protein function, making mutations in amino acids potentially harmful.
  • #1
rpayne88
6
0
Just wondering what the physical size of amino acids such as glycine and alanine are in nm or Angstroms.

Thanks.
 
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  • #2
Hmm. I found ~0.42nm as a size estimate of a glycine molecule, the smallest amino acid.

Poole C and F J Owens, 'Introduction to Nanotechnology' Wiley 2003 p 311.
 

1. What is the physical size of amino acids?

The physical size of amino acids can vary depending on the specific amino acid. They are small molecules, typically ranging from 1-2 nanometers in length.

2. How does the physical size of amino acids affect protein structure?

The physical size of amino acids plays a critical role in determining the overall structure and function of proteins. The size and shape of amino acids determine how they interact with other amino acids and ultimately contribute to the folding and stability of proteins.

3. Are there any variations in physical size among different types of amino acids?

Yes, there are variations in physical size among different types of amino acids. For example, amino acids with bulky side chains, such as phenylalanine and tryptophan, are larger in size compared to amino acids with smaller side chains, such as glycine and alanine.

4. How do scientists measure the physical size of amino acids?

Scientists use a variety of techniques to measure the physical size of amino acids, such as X-ray crystallography, nuclear magnetic resonance (NMR) spectroscopy, and mass spectrometry. These methods allow for the visualization and characterization of the three-dimensional structure of amino acids.

5. Can changes in the physical size of amino acids affect protein function?

Yes, changes in the physical size of amino acids can have significant effects on protein function. Even small changes in size can alter the interactions between amino acids and ultimately impact the overall structure and function of proteins. This is why mutations in amino acids can have serious consequences on protein function and lead to diseases.

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