Increasingly, however, his work began to reflect a deeply held interest in stereochemistry of plant pigments, especially polyenes. ❋ Unknown (2010)
The affinities acheived by virtue of its stereochemistry is not a given, because the stereochemistry of the nucleotide could have been different. ❋ Unknown (2008)
As E.L. Eliel pointed out, stereochemistry is not so much a branch of chemistry but rather a way of looking at chemistry. ❋ Unknown (1976)
According to a prominent fellow scientist, your paper represents the first real advance in stereochemistry since the theory of Van 't Hoffand Le ❋ Unknown (1970)
In each of the 19 pathways for the generation of chiral amino acids, the stereochemistry at the α-carbon atom is established by a transamination reaction that involves pyridoxal phosphate. ❋ Unknown (2010)
Hoffmann formulated in 1965, together with Robert B. Woodward (see Section 3.8), rules based on the conservation of orbital symmetry, for the reactivity and stereochemistry in chemical reactions. ❋ Unknown (2010)
Prelog of ETH in Zürich was also based on research in stereochemistry. ❋ Unknown (2010)
This thread is about stereochemistry and Art/Yarus/Meyer on codon-amino acid relationships. ❋ Unknown (2010)
Not only can a compound have more than one geometric form, but chemical reactions can also have specificity in their stereochemistry, thereby forming a product with a particular three-dimensional arrangement of the atoms. ❋ Unknown (2010)
It's right there, Meyers says the words "genetic code" and talks about the codon-amino acid correspondence, and asserts (wrongly, as Art/Yarus show) that stereochemistry can't explain it. ❋ Unknown (2010)
The extreme stereochemical hypothesis is an overstatement, but the evidence thus far seems to support a role for stereochemistry in the origin of the genetic code. ❋ Unknown (2008)
There is some support for stereochemistry in the code's early development, followed by optimization and expansion. ❋ Unknown (2008)
We have presented comprehensive evidence that the standard genetic code is a product of natural selection to minimize the phenotypic impact of genetic error; the arrangement of codon assignments meets, to an extraordinarydegree, the predictions of the adaptive hypothesisand cannot be explained as an artifact of stereochemistry, biosynthetically mediated code expansion, or analytical methodology. ❋ Unknown (2008)
In particular, the adaptive hypothesis, which suggests that optimization has improved the code's error-minimizing properties, is still plausible given a broad range of amino acids whose coding was predetermined by stereochemistry (Figure 2). ❋ Unknown (2008)
It was * your* cite that assumed stereochemistry as part of its working hypothesis. ❋ Unknown (2008)
Fitness was determined with regards to random codes given the * historical* constraints imposed due to the evolution of the genetic code from the affinity of codons and amino acids (stereochemistry). ❋ Unknown (2008)
Zachriel: Fitness was determined with regards to random codes given the * historical* constraints imposed due to the evolution of the genetic code from the affinity of codons and amino acids (stereochemistry). ❋ Unknown (2008)
There are several hypotheses of concern on the origin of the genetic code; frozen accident, stereochemistry, coevolution, and translation-error. ❋ Unknown (2008)
When you rule out "stereochemistry, biosynthetically mediated code expansion, or analytical methodology", there is only one a priori Darwinian alternative left. ❋ Unknown (2008)
Early Fixation of an Optimal Genetic Code: We have presented comprehensive evidence that the standard genetic code is a product of natural selection to minimize the phenotypic impact of genetic error; the arrangement of codon assignments meets, to an extraordinary degree, the predictions of the adaptive hypothesis and cannot be explained as an artifact of stereochemistry, biosynthetically mediated code expansion, or analytical methodology. ❋ Unknown (2007)
