Fitting a right hand in a left-handed mitten

Many biomolecules come in two versions that are each other's mirror image, like a left and a right hand. Cells generally use the left-hand version of amino acids to produce proteins, and uptake mechanisms were thought to ...

How proteins are assigned to specific transporters

A fundamental cellular mechanism ensures that proteins are transported to the places they are needed in the cells. So-called vesicles are responsible for that transport. Determining their composition has been difficult up ...

New insight into unique sugar transport in plants

Sugar transport through sugar transport proteins (STP) is unique to plants, and is important for the proper development of plant organs such as pollen. STPs are also used to concentrate sugars in specific tissues like fruit, ...

Sea slug study illuminates how mitochondria move

Your cells have an amazing ability—they can build their own energy factories, called mitochondria. Once built, mitochondria must move where needed in the cell. Defects in mitochondrial transport are a suspected cause of ...

Electrical wire properties of DNA linked to cancer

One of the biggest helpers in our bodies' ongoing efforts to prevent DNA mutations—mutations that can lead to cancer—is actually rather tiny. Electrons, as it turns out, can signal proteins that repair DNA to patch up ...

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