Scations to the substrate. These pathways be regulated so that the small molecules are ent in appropriate amounts. Part A Which of the following statements is most likely to be true in the case of the feedback-regulated enzymatic pathway shown? PO P1 > View Available Hint(s) E2 P2 O PO binds E3 and activates it. E3 P3 O P2 binds E2 and activates it. O P3 binds E1 and deactivates it. O P2 binds E1 and activates it. O P3 binds E2 and deactivates it. Submit

Let's try similar things with another enzyme! Here's one with a cool mechanism that makes an interesting product. Cys157 Cys157 Cys157 His296 His296 His296 OH HNN: HN, HN -CO2 CH2 Asn329 Asn329 Asn329- Cys157 His296 OH OH HNNH HC. Asn329 N Note that this figure is typical of those found in the biochemical literature in that it provides a somewhat abbreviated view of what is happening. For example, the arrows I have circled in red above for the fırst step need some sorting out. What mechanism is represented by these arrows? O a two step, addition/elimination reaction O an SN2 reaction O an SN1 reaction O nucleophilic aromatic substitution O electrophilic aromatic substitution

Show the conversion of the intermediate to the target molecule (reaction 2). Find a commercial source and report the names and CAS-numbers of the reagents you need to synthesize the target molecule from the intermediate. Show the mechanism of this reaction and all isomers of the target molecule that can form; discuss why they form or why not. Determine the configurations of all chiral centers. I included the molecule, the retrosynthesis of the molecule, and reaction 2 to help solve this question.

l don't really understand how to draw the mechanism for this acid-catalyzed hydrolysis.