Frozen, but no accident – why the 20 standard amino acids were selected

Temporary anion states of selected amino acids

Why nature chose a - amino acids *

The autocatalytic system, N-phospho-a-amino acids, could not only self-assemble into oligo-peptides but also act as the phosphorylation reagents to phosphorylate the nucleosides into nucleotides and oligo-nucleotides, in aqueous medium. While, the b-amino acids did not have such properties.

When All of the Oceans Were Frozen

Science is the most fun when it makes things simple. And it is at the best when we find a theory that makes many previously-unrelated observations fit together like a puzzle, and which then leads to new predictions and discoveries. During the midto late 1960s, Plate-Tectonics did this in grand style for most of the Earth sciences, allowing an entire host of observations from paleontology to pet...

Not if but when; no longer why but how

There is accruing evidence that information technology can improve patient health care, with several trials of technology showing smaller numbers of medication errors, or can provide earlier detection of adverse events. Critics of this type of research point out that better resolution of events is of no value unless their direct management influences clinical outcome. Nevertheless, indirect evi...

Release of selected amino acids from zinc carriers.

The paper deals with the results of an investigation of the release of selected amino acids (histidine, tryptophan, tyrosine) from model suspensions prepared by co-precipitation with zinc chloride. It has been proven that the influence of the Zn(II)/amino acid molar ratio on dissolution profiles of the tested amino acids and dissolution half-life (t1/2) of histidine or tryptophan is significant...