A Claw Of 4

a: Chelation ~
b: a crab claw pinching a mineral

What: Except that with many molecules that bind to minerals, the claw has 4 points and not 2. A 4 pointed claw it is. It looks something like the linked picture.

Writer: Not Stated
Where: Reference Link Has Evaporated
Date: Jul 24 2013 6:40 PM

A Molecular Claw....

a: Chelation ~
b: claw

What: "A lot of bacteria produce organic chelating compounds called siderophores. Chelation is like a claw; it is how the compound binds to metals such as iron, providing necessary nutrients that help bacteria survive," Bullen said. This is fundamental scientific research that hasn't been examined much before, she added, explaining, "What we had proposed was that these compounds might contribute to why bacteria want to stick to a surface. If they're on the outside of the bacteria, they could kind of act like a claw and grab on to a surface..."

Writer: Dr. Heather Bullen, assistant professor of chemistry
Date: Jul 24 2013 6:32 PM

Green Venn Diagram

METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.