Question

@ +168 SA +84 +168 $ +84 MM MM MAA Hydropathy index Hydropathy index Hydropathy index -84 L 260 20 LILLE 200 168 u 400 First amino acid residue in window Graph 1 -16850 20 First amino acid residue in window Graph 2 First amino acid residue in window Graph 3 contains a 8 barrel contains no transmembrane motifs contains four transmembrane helices represents a porin protein Solved
Assign each statement to the hydropathy plot

Answer 1

Graph 1- shows beta barrel protein as they contain both non polar and polar residue so that non polar amino acid can form hydrophobic core and par amino acid exterior hydrophilic environment . Secondly , porins are an example of beta barrel. Graph 2 shows no transmembrane motif as no significant high number of either type of amino acid present. Graph 3 shows 5 transmembrane motifs as in transmembrane domains hydrophobic domains are presemt and there are four peaks showing significant positive values