. The structure of certain porin proteins isorganized into an interesting beta-barrel, in which each beta strand spans the lipidbilayer at an ~45° angle. Using this information, together with general dimensions of thelipid bilayer, what would be the approximate number of amino acids found within a betastrand in an aquaporin protein complex? Explain how you arrive at your answer.

IntroductionStructureAquaporin have structure consisting of 6 member helical structure forming…

Answered: . The structure of certain porin…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

Lipid bilayers form spontaneously in a process driven by the hydrophobic effect. Explain how the hydrophobic effect drives bilayer formation from individual lipids in an aqueous environment. Describe how the physical properties of the lipid bilayer are determined by the chemical properties of the membrane lipid components. Diagrams are encouraged for both parts of the question.
Explain why each option is incorrect and also explain the correct option
Integral membrane proteins... Choose all that could apply are bound to the membrane by only interacting with the phospholipid's polar head O contain many amino acids with hydrophobic residues O contain alpha-helical membrane spanning domains O would not be digested by trypsin in a permeabilized cell O interact with the phospholipid core of the phospholipid bilayer
List two differences you would expect to see in the composition of lipids in the E. coli membrane when the cells are incubated at 25 °C compared to incubation at 37 °C.
Mutations of Lysine to Alanine residues near the membrane water interface disrupts binding to the lipids. Which portion of the lipid does the protein bind to, the head group or the acyl chain, given the mutation?
Proteins that span the biological membrane bilayers often contain α-helices and b-barrels. (a) Given that the insides of membranes are highly hydrophobic, predict what type of amino acyl residues would be found in a single alpha-helix that is spanning a membrane – draw a diagram to illustrate the arrangement of the R-groups within the membrane bilayer. (b) Using a drawing, illustrate the R-group arrangement in the membrane-spanning region of a channel protein for water transport if the channel was made of: six alpha-helices six beta-strands
Although we tend to think of the cell membrane as a smooth covering for a cell, the membrane can undergo dramatic shape changes as the cell contents (the cytosol) oozes around underneath the membrane. As a result, the cell membrane can curve abruptly to allow a projection or an indentation in the cell surface (see photo). Cells facilitate the curving of the membrane by swapping out the acyl chains of membrane phospholipids. Which would have a greater effect on the ability of the membrane to curve: replacing saturated acyl chains with unsaturated acyl chains or replacing unsaturated acyl chains with saturated acyl chains? (. 6.
Please help me with this question. More than one answer may be correct. Elastin _______. Options: A) has a repeating structure of 3 amino acids such as Gly-Pro-X B) crosslinks with numerous other elastin peptides to make an elastic fiber C) is physically attached to the smooth endoplasmic reticulum D) is physically attached to ribosomes E) is rich in hydrophobic residues
Please answer
Select all answers that apply

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