Cell Membrane flash cards

Phosphatidic Acid

Phosphoglyceride(phospatic acid and glyceride base)

PA(no head group), PG(glycerol), PE(ethanolamine), PC(choline), PS( serine), and PI(Inositol).

Sphingolipids

Sphingolipids= FA w/ amine bond

Glycosphingolipid(has sugar molecule)

Sphingomyelin(choline or serine as alc)

Glycolipids

mostly sphingolipids w/ an oligosaccharide esterified

glycerol glycolipids w/ an oligosaccharide esterified

glycosylphosphatidylinositols w/ an oligosaccharide esterified

Peripheral membrane protein

are anchored to the bilayer

Integral Membrane proteins(A)

Cross lipid bilayer one or more times

Most have a single alpha helix transmembrane part and two globular regions, one in the cytoplasm and the other in the extracellular

ex: glycophorin, receptors

Integral Membrane Protein(B)

Many are globular proteins w/ mult transmembrane helices with hydrophobic chains facing toward the bilayer and hydrophillic chains in the core to form pores.

ex: channels, carriers, and 7-helix receptors

Integral Membrane Protein(C)

A couple consists of mult transmembrane beta-strands wrapped into a barrel w/ polar/hydrophilic side inward.

ex: porins of mitochondrial and bacterial outer membranes

Integral Membrane Protein(D)

many proteins consist of mult subunits, resulting in the formation of polar pores.

ex: ion channels, neurotransmitter receptors