Structured abstracts and text mining

A letter in today's Nature calls for journals to move to structured abstracts. These would allow text-mining software to access articles. The abstract would include:

1. list of entities (genes, proteins etc)
2. list of main results described using controlled vocabulary (eg "Protein A binds to Protein B")
3. Evidence codes to show how obtained (eg "affinity purification")

For an example of text mining see Textpresso.