You have a peptide with the sequence: Asp, His, Pro, Ala, Ile, Val. Which amino acids substitution should I make to increase flexibility? a. Asp to Glu b. His to Thr c. Val to Gly d. Pro to Gly e. Val to Ala Question 4 In the image, arginine 79 is shown to be important for the stabilisation of the quaternary protein complex. What will happen if the arginine is substituted for a glutamine? a. The mutation is more hydrophobic and will make the interaction tighter. b. There will be no change. c. The mutation will allow more water molecules to bind and disrupt the interaction causing the complex to break. d. The negative charge of the R group will repel against the negative charge opposite causing the complex to break. e. Some hydrogen bonding will be possible and the quaternary complex will be weaker but still form