Derived proteins

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Adz795
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Derived proteins

Post by Adz795 » Thu Sep 15, 2011 7:49 am

Can anyone explain me about 'Derived proteins'?
I have read a lot but the concept doesn't quite fit in.
First of all, proteoses are simple proteins, right? and polypeptides are derived? How does that make sense? I don't understand.

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JackBean
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Post by JackBean » Thu Sep 15, 2011 10:29 am

what's that?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

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Adz795
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Post by Adz795 » Thu Sep 15, 2011 1:55 pm

Derived proteins are a type of proteins, others being simple proteins and conjugated proteins.
I don't quite understand this group of proteins called derived proteins. I read about them but I would like to hear it from someone who knows better about this type.

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Re: Derived proteins

Post by merv » Sun Oct 02, 2011 4:29 pm

Adz795 wrote:Can anyone explain me about 'Derived proteins'?
I have read a lot but the concept doesn't quite fit in.
First of all, proteoses are simple proteins, right? and polypeptides are derived? How does that make sense? I don't understand.

i have never heard of proteoses in >10 years in the industry. Much more likely is you mean proteases. These are enzymes (usually proteins themselves) which snip or chew proteins. Enzymes in the stomach are good examples (e.g. trypsin, pepsin).

I don't know what you mean by "simple" proteins- small proteins are usually termed peptides (2-15 amino acids or so), although more accurately they are polypeptides.

In answer to you main question then, derived usually refers to the source of the protein. Human derived proteins are sourced from human tissue, and so on. Recombinant Human proteins (e.g. cloned genes with the same sequence as the human gene, but put experimentally put into bacteria, or yeast or insect cells etc) may be bacterially derived etc.

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