The Alternate Origin of Pyrrole Rings in Purple Bacteria Consists

question 69

Multiple Choice

The alternate origin of pyrrole rings in purple bacteria consists of:

• A) the condensation of glycine and succinyl-CoA to produce 5-aminolevulinic acid
• B) reduction of glutamate (in tRNA-glutamate), which is rearranged to 5-aminolevulinic acid
• C) an unknown reaction
• D) demetalation of coenzyme B₁₂
• E) none of the above

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