Certain microorganisms with a modified citric acid cycle decar-boxylate a-ketoglutarate to...

Certain microorganisms with a modified citric acid cycle decar-boxylate a-ketoglutarate to produce succinate semialdehyde:

(a) Succinate semialdehyde is then converted to succinate, which is further metabolized by standard citric acid cycle enzymes. What kind of reaction is required to convert succinate semialdehyde to succinate? Show any coenzymes that might be involved.

(b) Based on your answer in part (a), how does this pathway compare to the standard citric acid cycle in energy yield?