Neuro biology class notes 3

Neuro biology class notes 3 - 4° 2 aa chains o Lipid...

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o Name Charge [x] in [x] out Na Sodium +1 15milimol 150milimol K Potassium +1 150 milimol 5milimol Ca Calcium +2 0.0002milimol 2milimol Cl Chloride -1 130milimol 150milimiol o Biomolecules o Amino acids: building blocks of protiens NH3 and COO- group (amine+carboxyl acid) Differ because of side chain o Phospholipid: Polar head and 2 nonpolar hydrophobic fatty acid chains o Proteins: Made up of amino acid units R groups are not part of back bone- stick out Length can vary from 2 thousand aa long 1°:Protiens each have unique folding patteren dictated by sewuence of aa and interacting chains 2°- depends on side chains Alpha helix- cylindrical, h bonds form back bone Beta sheet 3°- 3-Dsturcutre formed by separate aa chains of alpha or beta and refold
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Unformatted text preview: 4°- 2+ aa chains o Lipid Bilayer o Formed by phospholipids to make membrane o Non covalent o Double sheet of lipids o Heads stick to hydrophilic outside o Tails stick to hydrophobic inside o Protiens: Transmembrame- span outside to inside of cell Peripheral- attached to intracellular membrane only Surface- attached to surface of lipis o Properties Exclusively selescts some molecules • Ex: charged molecules/ions; large; polar CANT pass o Na K aa glucose and nucletides CANT pass • Glycerol ethanol H2O CO2 O2 N2 can pass (small hydrophobic or small uncharged polar...
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