releech at TELUSPLANET.NET
Fri Jan 14 20:42:02 CST 2005
Keep in mind that it was over 1 billion years ago when
the former bacterium became symbiont chloroplasts in the
larger cell (just as mitochondria and nuclei became
symbionts), and agreed to convert sunlight to usable
chemical energy in order to live in a nice cushy cell.
No "faster" protein was needed cuz its abundance
filled the need. There has been no selection for a faster
enzyme in nature cuz it is not needed.
It is the human mind that puts grades or quality on things,
not nature. In nature, if it isn't competing, it dies out.
----- Original Message -----
From: "Curtis Clark" <jcclark-lists at EARTHLINK.NET>
To: <TAXACOM at LISTSERV.NHM.KU.EDU>
Sent: Friday, January 14, 2005 8:13 PM
Subject: Re: ID musings
>I was giving a guest lecture about photosynthesis last quarter, and I
> pointed out that one of the best arguments against intelligent design is
> RuBisCO, the enzyme that fixes CO2 in photosynthesis. It is one of the
> most abundant proteins, and the most abundant enzyme, in nature, it has
> a reaction rate ten to a hundred times slower than your average enzyme,
> and it will give up on the reaction, and even run backwards, if the
> substrate concentration runs low. If RuBisCo were an employee, it would
> be the boss's idiot nephew. RuBisCo makes sense in the evolutionary
> context of using what you've got, but if I were an intelligent designer,
> I'd be ashamed to have created RuBisCO.
> Curtis Clark http://www.csupomona.edu/~jcclark/
> Web Coordinator, Cal Poly Pomona +1 909 979 6371
> Professor, Biological Sciences +1 909 869 4062
More information about the Taxacom