The primordial advantage of linking some amino acids (most likely glycine and alanine) to the ancestral acceptor stem may have been selective retention in a protocell surrounded by a leaky membrane for use in nucleotide and coenzyme synthesis.
An analysis of π-helices in the diverse ferritin-like superfamily illustrates their tendency to be conserved in protein families and identifies a putative π-helix-containing primordial precursor, a "missing link" intermediary form of the ribonucleotide reductase family, vestigial π-helices, and a novel function for π-helices that we term a "peristaltic-like shift".
Gozani and colleagues identified the BAH domain in Orc1 (the largest subunit of the origin recognition complex and previously implicated in primordial dwarfism) as the link between H4K20me2, Orc1 and primordial dwarfism.
Usually beginning with the creation of the world from primordial elements, they attempt to link the Indian and Tibetan rulers with the house of Genghis Khan.
But, even if it was, does this link Zn to primordial stages of evolution?
We are faced with geopolitical choices, which are always linked to the primordial wagers of metaphysics.
Gestational DES exposure is linked to fewer primordial follicles in pups, resulting in fewer ovulated ova (McLachlan et al. 1982).
Thus, the Eumetazoa ancestor likely possessed a Sp gene cluster linked to the primordial Hox gene cluster (Fig. 10, "eumetazoan grade").
By itself, Bax deficiency has been linked to increased primordial germ cell survival, resulting in an increase in follicular endowment and extended ovarian function to advanced chronological age.
But the link of life to primordial chemistry was already evident to Darwin, who in 1871 corresponded with Joseph Dalton Hooker: "it is often said that all the conditions for the first production of a living being are now present, which could ever have been present.
