- Killing for DNA: A predatory device in the cholera bacterium
- Defying textbook science, study finds new role for proteins
- Unique Sulawesi frog gives birth to tadpoles
- Patterns of RNA regulation in nuclei of plants identified
Posted: 01 Jan 2015 01:36 PM PST
Scientists have uncovered the unconventional way that the cholera bacterium stabs and kills other bacteria to steal their DNA, making it potentially more virulent. Cholera is caused when the bacterium Vibrio cholerae infects the small intestine. The disease is characterized by acute watery diarrhea resulting in severe dehydration.
Posted: 01 Jan 2015 11:23 AM PST
Results from a new study defy textbook science, showing for the first time that the building blocks of a protein, called amino acids, can be assembled without blueprints – DNA and an intermediate template called messenger RNA (mRNA). A team of researchers has observed a case in which another protein specifies which amino acids are added.
Posted: 31 Dec 2014 12:39 PM PST
Frogs exhibit an amazing variety of reproductive behaviors, ranging from brooding their eggs in their mouths to carrying tadpoles on their backs. Fewer than a dozen species of 6,000+ worldwide have developed internal fertilization, and some of these give birth to froglets instead of eggs. One species that has internal fertilization, a fanged frog from the island of Sulawesi in Indonesia, has been observed to give direct birth to tadpoles, which is unique among amphibians.
Posted: 31 Dec 2014 11:04 AM PST
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