Orgel’s Second Rule: “Evolution is cleverer than you are.”
Mankind has evolved to believe in religion, not understand science.
“Man masters nature not by force but by understanding. This is why science has succeeded where magic failed: because it has looked for no spell to cast on nature.” – Jacob Bronowski (1908 – 1974)
Histone deacetylase enzymes
at Science and Reason
Cancer: Genes, Chromosomes or both
at Omics! Omics!
Pseudomonas aeruginosa: Versatile Pathogen and Drug Addict?
at Small Things Considered
Centrosome Structure and Duplication
here at Migrations
And some ScienceDaily picks, below the fold:
Sea Anemone Genome Provides New View Of Our Multi-celled Ancestors
The genome of the starlet sea anemone is nearly as complex as the human genome, according to researchers who have completed the first analysis of the animal’s genes. Because of this similarity, it is providing major insights into the common ancestor of eumetazoans, a group that includes not only humans and sea anemones, but nearly all multi-celled animals.
Cooperative single-celled amoebae rely on family ties to keep cheaters from undermining the health of their colonies, researchers say. In a study combining careful field work with painstaking laboratory research, biologists examined thousands of spores of the soil microbe Dictyostelium discoideum. Field studies revealed high-relatedness in wild colonies, and laboratory studies showed that cheating mutants couldn’t gain a foothold in highly related colonies.
Scientists have discovered that adult neural stem cells, which exist in the brain throughout life, are not a single, homogeneous group. Instead, they are a diverse group of cells, each capable of giving rise to specific types of neurons. The finding, the team says, significantly shifts the perspective on how these cells could be used to develop cell-based brain therapies.
A chemically-modified version of a mitochondrial toxin long used to control species of invasive fish in lakes has been found to selectively inhibit two “survival proteins” in cancer cells.
Researchers present a new model of early biological evolution — the first that directly relates the fitness of a population of evolving model organisms to the properties of their proteins. The results of the study suggest a plausible comprehensive scenario of emergence and growth of the protein universe in early biological evolution.
A recent article reports on a new understanding of the growth of human stem cells. It had been thought previously that stem cells are directly influenced by cells in the local environment or ‘niche’, but the situation may be more complex. Human embryonic stem cells can be seen as perpetual machines that generate fuel for life.