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Lecture 2 Bio 320 - Strong bonds=covalent bonds Weak...

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9/1/09 Lecture 2 Biology 320 The homochirality problem Amino acids can exist as D and L but only the L form exists in proteins If you always make a mixture of both how do you get only one? Enantiomeric Cross Inhibition: if you have D template you need to put D nucleotides if you put L nucleotides, template transcription stops. So the problem is even when they are present, how do they only get one? How cells use energy Chemical bonds
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Unformatted text preview: Strong bonds=covalent bonds Weak bonds=binding interactions To measure the bonds strength you look at how much energy is required to make or break a bond. When there isn’t much water around, ionic bonds are very strong Dielectric property of water: ions dissolved in water remove charge. Weak bonds: hydrogen bonds, van der waals Hydrophobic interactions All protein bonds are weak bonds: ionic and hydrogen At...
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