Question

19 Proteins can move laterally in biomembranes and the lateral distance (r) traveled in a given time (o) is given by, r= (4D1): The diffusion constant for (D) for the membrane protein fibronectin is approximately 0.7 x 10 cm2 sec 1, whereas that for rhodopsin is about 3.0 x 10" cm,secs_ a calculate the distance (r) traveled by each of these proteins in 10 msec (answer in nm, be sure to circle your answers) b. what can you reasonably assume about the interactions of these two proteins with other membrane components? Your answer should be 1-4 sentences.

Answer 1

B) membrane proteins are part of cell membrane which are in interaction with the lipid layers . Lipid bilayer has a hydrophobic inner and hydrophilic outer part .so protein will be in interaction with the hydrophobic part of lipid .

Here fibronectin will be having stronger interaction thus it is uh unable to move a larger distance whereas rhodospi will have smaller interaction.