Membrane-associated proteins can be distinguished by the types of interactions they have with the lipid bilayer and their structural motifs. Match each statement to the category of membrane-associated protein it describes. Membrane-spanning ? helix Membrane-spanning ? strands Lipid-anchored membrane protein Peripheral membrane protein Answer Bank often contain a residue with covalently attached glycosyl phosphatidylinositol amino acid sequence pattern: nonpolar R group, polar R group (repeats) composed of about 20 hydrophobic residues membrane attachment depends upon electrostatic interactions with membrane phospholipid head groups can usually be released from membrane by concentrated salt solutions
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" Step 2: For the membrane-spanning Ī± helix, the statement that matches is "Amino acid sequence pattern: nonpolar R group; polar R group (repeats)." Step 3: For the membrane-spanning Ī² strands, the statement that matches is "Composed of about 20 hydrophobic Show moreā¦
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Membrane proteins are sometimes covalently attached to lipid moieties. are sometimes covalently attached to carbohydrate moieties. are composed of the same 20 amino acids found in soluble proteins. diffuse laterally in the membrane unless they are anchored. have all of the properties listed above.
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