1. phospholipid molecules are derived from glycerol except for sphingomyelin, which is derived
a. this information does not match the diagram on slide
i. serine is the PRECURSOR, but choline is in the final product.
2. what are linkers
a. proteins that attach cells together, attach membrane to cytoskeleton, and cells to
i. e.g. desmosomes
3. how does the beta barrel transverse the membrane?
a. its not entirely hydrophobic
4. what you see for beta sheet structure is each amino acid is in an adjacent position
a. what does this mean?
i. amino acids arranged on beta sheets are rolled up to make a barrel
ii. dual layered
1. by alternating the hydrophobic and hydrophilic elements, creates this
a. hydrophobic facing outward
b. hydrophilic facing inward
i. facing inward to create hydrophilic environment