"Villain-Tines"

Poster Ex (CH) chris at hancock.karoo.co.uk
Sun Apr 1 19:39:04 EST 2001


> This is completely wrong; that's not what catalyst means.

Indeed, I supposed that a catalyst as used in chemistry ( EG. Haber
Process? )
might be different from enzymes?

> >So the question is, not does acid contribute to the breakdown of protein,
> >but is it the ONLY ingredient that does this,
> >or do enzymes do the actual process w/o the "help" of acid...
>
> Pepsin does the digestion without the help of acid: the role of acid is to
> activate it.
>
> Pepsin might be a confusing example: if it helps clarify things, there are
> many, many other digestive enzymes which do not requre acid for activation
> or function.

No, Pepsin is an excellent example :>
It is the most extreme example of WHY an enzyme might require an acidic
condition to operate,
in fact, I think I already posted a site to this thread which explained how
pepsin is "activated"...

I am pretty sure you have just confirmed my point, which, to be frank, is
what the objective of this thread is,
I doubt my opponent is interested greatly in biology...





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