5- Imagine a fully folded protein in tertiary structure- It looks like.docx

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5. Imagine a fully folded protein in tertiary structure. It looks like the image to the right where it is lots of beta-strands with one alpha helix interacting on those beta-strands. The interaction between the beta-strands and the alpha helix are held there by van der Waals interactions forming a hydrophobic core between the two types of secondary structure in the cytoplasm. Circle the amino acids that are involved in that interaction. WENQWKQELDTRYRNALQ 6. In the sequence below, circle those residues that would not be involved in the hydrophobic core and would rather interact with water. WENQWKQELDTRYRNALQ 7. The polypeptide below forms a beta-hairpin, consisting of two antiparallel betastrands connected by a beta-turn. You have found that the amide nitrogen of phenylalanine forms a hydrogen bond with the carbonyl oxygen of threonine. Mark the peptide sequence below to indicate which residues belong to the two beta-strands and which to the beta-turn. Explain your reasoning. .

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74 Igmeouss Rocks Vilmene rexis ane moks that have on wallind frum lass - Fiyen 45 - d tieler cuer uat a compenelte velcanu C4.1s Buanew ia the arrial phesograph in ficure 4.8 . Hy if the erater ham been bexacbet ly a marrew dark. Moumt St. Melens, Wrashington Aerial photo made bofore 1900 eruption Igneous Rocks it ile iruter has bere breached by a Mount St. Helens, Washington Aerial photo made before 1960 eruption .

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