Transmembrane protein: Difference between revisions
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A [[Transmembrane|transmembrane]] protein is an [[Amphiphatic|amphiphatic]] protein with [[Hydrophilic|hydrophilic]] and [[Hydrophobic|hydrophobic]] regions which span the [[Lipid bilayer|lipid bilayer]]. The [[Hydrophobic|hydrophobic]] regions of a transmembrane protein are buried inside the [[Lipid bilayer|lipid bilayer]] whereas its [[Hydrophillic|hydrophillic]] regions are exposed on the outside<ref>Alberts, B., et al. Molecular Biology of The Cell. 6th ed. New York: Garland Science; 2015.</ref>. These proteins can either be 'single-pass' meaning it crosses the membrane once or 'multipass' and therefore crosses the bilayer more than once. Transmembrane proteins are usually either a single [[Alpha helix|alpha helix]], multiple alpha helices or a [[Beta-sheet|beta sheet]] that has been rolled and is referred to as a beta barrel<ref>Alberts et al (2008) Molecular Biology of the Cell, 5th edition, New York Garland Science, Chapter 10, pages 629-630</ref>. <br> | |||
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Latest revision as of 16:09, 4 December 2016
A transmembrane protein is an amphiphatic protein with hydrophilic and hydrophobic regions which span the lipid bilayer. The hydrophobic regions of a transmembrane protein are buried inside the lipid bilayer whereas its hydrophillic regions are exposed on the outside[1]. These proteins can either be 'single-pass' meaning it crosses the membrane once or 'multipass' and therefore crosses the bilayer more than once. Transmembrane proteins are usually either a single alpha helix, multiple alpha helices or a beta sheet that has been rolled and is referred to as a beta barrel[2].