Consider the first reaction of TCA cycle.
Acetyl `CoA + OA A +H_(2)O overset("Citrate")underset("synthase")rarr A + CoA` What is true about compound A?

Options

A. First product of TCA cycle
B. Tricarboxylic acid and six carbon compound
C. It undergoes reorganisation in the presence of enzyme aconitase to form cis-aconitate
D. All of these

Answer

D

Explanation

The TCA cycle starts with the condensation of acetyl group with oxaloacetic acid and water to yield citric acid. It is tricarboxylic 6-carbon compound and undergoes reorganisation in the presence of iron containing enzyme aconitase first forming cis aconitrate and releasing water
`"Citrate" underset(Fe^(2+))overset("Aconitase")(hArr) cis-"aconitate" +H_(2)O`