Technique: cartoon of how ammonium sulfate precipitation works

a cartoon about how ammonium sulfate precipitation works

This is a story about a boy, who doesn't have a lot of friends, so he plays by himself. 

Water molecules interact with each other via hydrogen bonding.

One day, he makes a new friend. They become best buddies.

Rubisco has some positive and negative charges that allows it to interact well with water; therefore, it is very soluble in water.
UC Davis Chemiwiki. Ribulose 1,5-bisphosphate carboxylase (rubisco). http://chemwiki.ucdavis.edu/Wikitexts/UCD_Chem_124A%3A_Berben/Ribulose_1,5-bisphosphate_carboxylase_%28rubisco%29/Rubisco_1 (accessed date 3/22/2011)

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They are good friends, who sticks by each other.Until one day, the boy meets a girl. The girl takes the boy's attention away from his best friend. 

Ammonium sulfate has more appealing charges to water when compared to Rubsico.
chemexper. ammonium sulfate. http://www.chemexper.com/chemicals/supplier/cas/7783-20-2.html (accessed date 3/22/2011)

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The girl (intentionally or unintentionally, the jury is still out) ruins a good friendship. The boy chooses her over his best friend, and his best friend is left out in the cold, ALONE.

Water interacts with ammonium sulfate more instead of with Rubisco; therefore, Rubsico falls out of solution with the extra help of the centrifuge.