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What is the difference between a protein and a peptide?

What is the difference between a protein and a peptide? - Peptide Forum

What is the difference between a protein and a peptide? - Peptide Forum. Ask and discuss questions on peptide protocols, custom peptide synthesis, peptide identification and peptide sequencing.


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Old 02-12-2012, 10:18 PM
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Default What is the difference between a protein and a peptide?



My neuro book says amino acids become proteins, and then says they form peptides, using the terms almost interchangeably on several times. I know amino acids can combine to form polypeptides, but is that what a protein is? It doesn't make sense that they would be two words for the same thing like that, but there's really no distinction that I can find. Please help!
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Old 02-13-2012, 05:44 AM
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Smile Re: What is the difference between a protein and a peptide?

Peptide and protein were distinguish on basis of size(Molecular weight) . Here is no perfect boundaries but generally peptide were chain of 2 to 50 amino acid , If no. of amino acid increase it become called protein.

For more details just go on any search engine and check out,You got enough information about the topic.

Regards
Kunal pandya
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Old 02-15-2012, 03:29 PM
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Default Re: What is the difference between a protein and a peptide?

Peptides are short polymers formed from the linking of <100 amino acids. They comprise some of the most basic components of human biological processes, including enzymes and hormones. In contrast, "proteins" are longer chains of >100 amino acids. They play a critical role in biochemical reactions within cells. Proteins are ubiquitous in cellular chemistry and structure and are crucial for carrying out most biological functions of living organisms. To be brief, peptide chains are short and proteins are long. In addition, peptides typically offer low toxicity and high specificity, while protein show high bioreactivity, specificity and safety.
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Old 03-21-2012, 01:31 AM
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Default Re: What is the difference between a protein and a peptide?

I agree with above replies totally. In other words, it is easy-to-understand ,yet maybe not exact that animo acids are deemed as water drops, peptides as rivers, and proteins as sea. Drops get together into a river, rivers run into sea.
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Old 04-28-2012, 12:29 PM
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Default Re: What is the difference between a protein and a peptide?

Because proteins are crucial for biological functions, I could see where it would be crucial for the exocrine function of the pancreas to be functioning in a normal manner. How would one judge by testing how that is working? Measuring protease? Or albumin?
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Old 05-30-2012, 04:28 AM
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Default Re: What is the difference between a protein and a peptide?

peptide is small, protein is big
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