Term
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Definition
| Thiol groups (SH) can form disulfide bonds. lose 2H + 2 e- (oxidation reaction). only see in extracellular proteins because intercellular environment has reducing agents. |
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Term
| polar, charged amino acids |
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Definition
| Lysine, Arginine: positive and basic. amino groups NH3+. Histidine: acts as acid or base. Aspartate, Glutamate: negative and acidic. |
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Term
| electrostatic interactions |
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Definition
| aka salt bridges. Form b/w + and - amino acids |
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Term
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Definition
| form at neutral pH. contain a dual charge at amino and carboxyl groups. ionization varies w/ pH. |
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Term
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Definition
| pH at which a molecule contains no charge. find by taking average of pka values of different ions around the zwitterion |
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