identify the presence of a peptide bonds in your structure by putting a star/highlighting at the appropriate bond(s). If you have none explain why?

Hello I need the answer of question attached. Thanks

Not sure how to do the expanded structure for these… (if you can only answer one, can you do letter E?) All of them would be awesome though! Thank you!

Draw the protein given by the sequence TIP and circle any chiral carbons. 6

Imagine the main chain of a protein bends back on itself, so that two amino acid residues R₁ and R₂ come close to each other. In the table below are four possibilities for what R₁ and R2 might be. In each case, decide whether a specific interaction could form between the residues. If a specific interaction could form, give the name of the interaction. R₁ R₂ specific interaction? name of specific interaction x yes alanine valine O no isoleucine asparagine ○ yes O no yes lysine glutamate ☐ O no yes threonine asparagine O no

(Anyone) Can you please help me with this Chemistry problems? (all of them)

Give detailed Solution with explanation needed

Which peptides is more likely to take up on alpha-helical structure? Explain. Top: Leu-Lys-Ala-Glu-Asn-Asp-Glu-Ala-Ala-Arg-Ala-Met-Ser-Glu-Ala Bottom: Cys-Arg-Ala-Gly-Gly-Phe-Pro-Trp-Asp-Gln-Pro-Gly-Tyr-Ser-Asn

Only typed solution

Refer to the bar graph below, Explain why the n→π* interactions contributes more to the overall stabilization of the protein than all the other interactions(C-H-O hydrogen bond,π-π interactions, C5 Hydrogen Bonds, Cation-π interactions, Sulfur-arene interactions, Anion-π interactions, Chalcogen bonds, X-H-π interactions) even though  n→π* is the weaker interaction. Explain why that's the case for EACH of the bonds.  I.e Why n→π* interactions contribute more to the overall stabilization of the protein than C-H-O hydrogen bonds, even though  n→π* is the weaker interaction. Why n→π* interactions contribute more to the overall stabilization of the protein than π-π interactions even though  n→π* is the weaker interaction. Why n→π* interactions contribute more to the overall stabilization of the protein than C5 Hydrogen Bonds, even though  n→π* is the weaker interaction. Why n→π* interactions contribute more to the overall stabilization of the protein than Cation-π interactions, even though…