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image: Ciliates Are Genetic-Code Deviants

Ciliates Are Genetic-Code Deviants

By | October 1, 2016

Traditional stop codons have a double meaning in the protozoans' mRNA, sometimes calling for an amino acid during translation.

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image: Protozoans Found With No Dedicated Stop Codons

Protozoans Found With No Dedicated Stop Codons

By | October 1, 2016

Some ciliates use the same trio of nucleotides to code for an amino acid and to stop translation.

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image: How Plants Evolved Different Ways to Make Caffeine

How Plants Evolved Different Ways to Make Caffeine

By | September 21, 2016

Caffeine-producing plants use three different biochemical pathways and two different enzyme families to make the same molecule.

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image: Stingrays Chew Too

Stingrays Chew Too

By | September 15, 2016

Researchers observe stingrays moving their jaws to grind up prey, a behavior thought to be restricted to mammals.

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image: Week in Review: September 5–9

Week in Review: September 5–9

By | September 9, 2016

Environmental magnetite in the human brain; prion structure takes shape; watching E. coli evolve in real time; learning from others’ behavior 

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image: Giant Petri Dish Displays Evolution in Space and Time

Giant Petri Dish Displays Evolution in Space and Time

By | September 8, 2016

As E. coli bacteria spread over increasingly concentrated antibiotics, researchers discover novel evolutionary pathways that confer resistance.

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image: Promoting Protein Partnerships

Promoting Protein Partnerships

By | September 1, 2016

Scientists generate new protein-protein interactions at an impressive PACE.

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image: Protein or Perish

Protein or Perish

By | September 1, 2016

A bacteriophage must evolve certain variants of a protein or die.

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image: Streamlining the <em>E. coli</em> Genetic Code

Streamlining the E. coli Genetic Code

By | August 18, 2016

Scientists design a bacterial genome with only 57 codons.

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image: Extinct River Dolphin Species Discovered

Extinct River Dolphin Species Discovered

By | August 16, 2016

Overlooked for half a century, a skull in the Smithsonian collection points to a dolphin species that lived 25 million years ago, according to a study.

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