New Ideas on the Evolution of Photosynthesis Reaction Centers
Evolutionists do not have a clear understanding of how photosynthesis arose, as evidenced by a new paper from Kevin Redding’s laboratory at Arizona State University which states:
After the Type I/II split, an ancestor to photosystem I fixed its quinone sites and then heterodimerized to bind PsaC as a new subunit, as responses to rising O2 after the appearance of the oxygen-evolving complex in an ancestor of photosystem II. These pivotal events thus gave rise to the diversity that we observe today.
That may sound like hard science to the uninitiated, but it isn’t.
The Type I/II split is a hypothetical event for which the main evidence is the belief that evolution is true. In fact, according to the science, it is astronomically unlikely that photosynthesis evolved, period.
And so, in typical fashion, the paper presents a teleological (“and then structure X evolved to achieve Y”) narrative to cover over the absurdity:
and then heterodimerized to bind PsaC as a new subunit, as responses to rising O2 …
First, let’s reword that so it is a little clearer: The atmospheric oxygen levels rose and so therefore the reaction center of an early photosynthesis system heterodimerized in order to bind a new protein (which helps with electron transfer).
This is a good example of the Aristotelianism that pervades evolutionary thought. This is not science, at least in the modern sense. And as usual, the infinitive form (“to bind”) provides the telltale sign. In other words, a new structure evolved as a response to X (i.e., as a response to the rising oxygen levels) in order to achieve Y (i.e., to achieve the binding of a new protein, PsaC).
But it gets worse. Note the term: “heterodimerized.” A protein machine that consists of two identical proteins mated together is referred to as a “homodimer.” If two different proteins are mated together it is a “heterodimer.” In some photosynthesis systems, at the core of the reaction center is a homodimer. More typically, it is a heterodimer.
The Redding paper states that the ancient photosynthesis system “heterodimerized.” In other words, it switched, or converted, the protein machine from a homodimer to a heterodimer (in order to bind PsaC). The suffix “ize,” in this case, means to cause to be or to become. The ancient photosynthesis system caused the protein machine to become a heterodimer.
Such teleology reflects evolutionary thought and let’s be clear — this is junk science. From a scientific perspective there is nothing redeeming here. It is pure junk.
But it gets even worse.
These pivotal events thus gave rise to the diversity that we observe today.
Or as the press release described it:
Their [reaction centers’] first appearance and subsequent diversification has allowed photosynthesis to power the biosphere for over 3 billion years, in the process supporting the evolution of more complex life forms.
So evolution created photosynthesis which then, “gave rise to” the evolution of incredibly more advanced life forms. In other words, evolution climbed an astronomical entropic barrier and created incredibly unlikely structures which were crucial for the amazing evolutionary history to follow.
The serendipity is deafening.
Cross-posted at Darwin’s God.