Proteins II

Frage	Antworten
What amino acids are silk fibroin high in?	Long stretches of Gly Ala sequences
What is the arrangement of silk?	Antiparallel B-sheets Will not stretch longitudinally much, very flexible laterally
Show some examples of hydrophobic sidechains (3)	Valine, Leuine, Phenylalanine
Show some examples of hydrophilic sidechains (3)	Aspartate Lysine Serine
What type of bonding is the most important in determining 3' structure?	Hydrophobic effect: Hydrophobic collapse is where hydrophilic sidechains are sequestered within the centre of the structure, with hydrophobic groups facing outwards
What is the entropic effect of hydrophobic molecules?	Makes water molecules form a shell around the molecule, the water molecules are more orderly than if hydrophobic molecules were absent More order=less entropy

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