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dvunkannon



Posts: 1377
Joined: June 2008

(Permalink) Posted: Jan. 12 2012,11:49   

Quote (Starbuck @ Jan. 12 2012,11:17)
Where does it say that?

 
Quote
In contrast, despite their early appearance, most (>60%) Zn-binding FSFs evolve after 0.6 nd, a pattern shared by Cu- and Ca-binding FSFs (Fig.3). Most of the late evolving Zn-FSFs use Zn as a structural molecule (Fig S2B).


My bolding. My point was that small, single domain proteins using metal ions are effective answers to two creationist claims:

1 - proteins have to be long (150 AAs) to show function
2 - catalytic activity comes from big proteins

I'm sorry if I overstepped the evidence in my enthusiasm for zinc fingers as an example. However, as OgreMkV points out, if Eukaryotes use them a lot, they must have picked up the trick from somewhere. The interesting point is the age, not the relative frequency of different metals.

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Iím referring to evolution, not changes in allele frequencies. - Cornelius Hunter
Iím not an evolutionist, Iím a change in allele frequentist! - Nakashima

  
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