Which peptide contains amino acids with side chains such that the peptide would exhibit predominantly London dispersion forces? Tyr-Asp-Leu-Lys-His O Phe-Asn-Leu-Leu-Met X S

After treatment with peroxyformic acid, the peptide hormone vasopressin is partially hydrolyzed. The following fragments are recovered. Propose a primary structure for vasopressin. Phe-Gin-Asn Pro-Arg-Gly NH2 Cys-Tyr-Phe Asn-Cys-Pro-Arg Tyr-Phe-Gin-Asn

sars-coV-2 spike protien what is the isoelectric point of this peptide? VGIYLQKTSDHRPEFALAMN

Use the following peptides to answer the questions below:  (They are in the image). Which peptide is most negatively charged at pH 7?                                                                                                        Which peptide is the most nonpolar?                                                                                                        Which peptide contains sulfur?                                                                                                        Which peptide will would be most easily detected at 280 nm?                                                                                                        Which peptide is the most positively charged at pH 5?