BME 83 HW9

BME 83 HW9 - BME HW#8 1) a) Nigel Chou Hydroxyproline polar...

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BME HW#8 Nigel Chou 1) a) Hydroxyproline – polar (contains an –OH group) Asparginine –polar Glutamic acid, Aspartic acid – acidic (contain –ve charge) Lysine, Arginine, Histidine – basic (contain +ve charge) Glycine, Proline, Alanine, Valine, Leucine, Isoleucine, Phenylalanine – nonpolar/hydrophobic Tyrosine - polar b) Collagen – left handed alpha helix, right handed triple-coil Elastin - c) Collagen has some polar and some nonpolar amino acids along the chain, which protrude out from the axis of the alpha helix structure. The hydrophobic residues interact with hydrophobic residues of the adjacent chains, while the polar amino acids interact with the aqueous environment. In elastin, all the amino acids are nonpolar. 2) a) They are linear polymers of sugar subunits b) They have multiple OH groups and O atoms along the chain that can form hydrogen bonds to water. Thus they have a strong affinity for water and imbibe water c) Viscoelastic, not able to support large loads (e.g. gut wall)
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BME 83 HW9 - BME HW#8 1) a) Nigel Chou Hydroxyproline polar...

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