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if all proteins have the same basic structure:linear strands of amino acids bonded

if all proteins have the same basic structure:linear strands of amino acids bonded - Peptide Forum

if all proteins have the same basic structure:linear strands of amino acids bonded - Peptide Forum. Ask and discuss questions on peptide protocols, custom peptide synthesis, peptide identification and peptide sequencing.


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Old 09-17-2012, 10:15 AM
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Default if all proteins have the same basic structure:linear strands of amino acids bonded



together by peptide bonds,? If all proteins have the same basic structure: linear strands of amino acids bonded together by peptide bonds, how it is possible that different proteins have such different shapes and functions?
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Old 09-17-2012, 10:16 AM
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...different amino acids, arranged in different orders. makes different protiens with different shapes and functions.
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Old 09-18-2012, 05:10 AM
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Thumbs up Re: if all proteins have the same basic structure:linear strands of amino acids bonde

There are different type of amino acid (Most common 20),Having different chirality ,attached in different sequence and no.

Peptide (no. of amino acid 2 to 50 {Not fixed criteria})
Protein (>50 amino acid), Having different secondary and tertiary ,quaternary structure)

For example If you have three amino acid e.g Tyrosine,Alanine,Valine ,you can make this many type of peptides and each are having different properties.,

Tyr-Val-Ala
Tyr-Ala-Val
Ala-Tyr-Val
Val-Tyr-Ala
Ala-Val-Tyr
Val-Ala-Tyr

total six possibility
and calculation is as simple as if
2 different amino acid then possibility = 2x1 = 2
3 different amino acid then possibility = 3x2x1 = 6
4 different amino acid then possibility = 4x3x2x1 = 24

and if same amino acid used more then one time in single possibility then formula for calculation is


n power to n where n is no. of amino acid

thus if three amino acid then possibility is 3 to power of three = 27
e.g. Tyr-Tyr-Tyr,
Ala-Ala-Ala,
Val-Val-Val,
Tyr-Val-Val,
Val-Ala-Ala etc. (Total 27)

And because of this We can get this versatilely in nature and activity of peptide and protein

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Kunal Pandya
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Old 09-18-2012, 05:12 AM
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Thumbs up Re: if all proteins have the same basic structure:linear strands of amino acids bonde

Proteins include virtually all hormones such as insulin and progesterone. Hemoglobin, a blood protein, carries oxygen to the cells. Heat shock proteins help rebuild our cells after stress. Transferrin and other transport proteins bind to minerals and carry them through the body. Muscle protein is responsible for our ability to move. Proteins such as RNA and DNA in the nuclei of our cells are responsible for the genetic code.

Proteins are also essential for the body structure. Bone forms in a protein matrix. Other structural proteins include collagen, cartilage, elastin and keratin that forms the skin.



Enzymes. All enzymes are proteins. Thousands of enzymes facilitate every chemical reaction in the body. Proteins may also be converted to sugar or fat to be used for fuel. Adequate protein helps maintain a good energy level, stabilizes blood sugar, assists adrenal and thyroid activity, helps control weight and assists bowel function.
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