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Denaturated proteine----> amino acid??

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Denaturated proteine----> amino acid??

Postby victor » Thu Jul 14, 2005 1:09 pm

Hey, when we eat ommelets, we eat denaturated proteine right? can it converted again into amino-acids so those amino-acids can be reconverted again into functional proteine?
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Postby mith » Thu Jul 14, 2005 2:05 pm

That's how digestion works
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Postby Poison » Thu Jul 14, 2005 2:11 pm

I remember writing this before but i will write it again for you. When a protein is denaturated, its structure changes. Aminoacids stay the same. The body breaks down proteins into aminoacids and synthesizes its own proteins. I mean, it is broken down even if you eat uncooked protein.
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Re: Denaturated proteine----> amino acid??

Postby Dr.Stein » Fri Jul 15, 2005 2:55 am

victor wrote:Hey, when we eat ommelets, we eat denaturated proteine right? can it converted again into amino-acids so those amino-acids can be reconverted again into functional proteine?

Denaturation is an irreversible reaction. It seems like you chop a cloth randomly and angrily. Then finally you realize that you cannot do anything with the cloth anymore. You destroy the structure, the protein chain in this case, though the amino acids are still there, but as a chain it will not functional anymore. It is already broken.
Whereas in digestion, in this case is protein digestion, seems like you cut that cloth properly into patches, so every patch will function as you want them to be, and nothing, or only few things, will not be used. In this case the amin waste that will be excreted out of the body.
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Postby victor » Sat Jul 16, 2005 11:46 am

Ok I got it...only few things broken from that....thanks :lol:
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Postby Jelanen » Mon Jul 18, 2005 2:25 pm

Denaturation DOES NOT alter or sever the the primary protein structure (amino acid sequence). It does, however, alter the secondary, tertiary and quarternary structure. Digestion on the other hand, breaks a protein into the constituent amino acids. There is a difference, it is a big deal, and we need to get it right and stop confusing people.

From the dictionary on this website:
denaturation
Reversible or irreversible loss of function in proteins and nucleic acids resulting from loss of higher order secondary, tertiary or quaternary structure) produced by nonphysiological conditions of pH, temperature, salt or organic solvents.
'It is futile to pretend to the public that we understand how an amoeba evolved into a man, when we cannot tell our students how a human egg produces a skin cell or a brain cell!'

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Postby Dr.Stein » Tue Jul 19, 2005 1:01 am

Did I make people confused with posting a wrong answer? Well, I should blame on my professorto tell me that way then :lol:
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Postby jasonkit » Sat Jul 23, 2005 2:05 pm

i remember that there is an enzyme digest potein to amino acid
(breaking polypetide bond)
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Postby Poison » Sat Jul 23, 2005 2:49 pm

Yes there are. They are called proteases.
PS: Name of that bond is peptide bond.
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Postby b_d_41501 » Sat Jul 23, 2005 10:08 pm

The wonders of the human digestive system. lol. Yes, this is done through various cycles in the digestion process.
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Postby victor » Mon Jul 25, 2005 11:35 am

That's why I can said that human is the most complicated machine that world ever have. :lol:
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Postby chemistry_freako » Tue Jul 26, 2005 4:40 am

Yea - complications and more complications. great to be part of the 'human bean' population =p
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