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Unformatted text preview: methyl tetrahydrofolate 11) The main dietary source of 1-carbon units are: 12) What is unique about Vitamin B12? 13) What are the two reactions that require Vitamin B12? 14) If a developing embryo lacks folate, what class of defect occurs? 15) What disorder arises from lack of “intrinsic factor”? Where is intrinsic factor synthesized? 16) Can methionine be synthesized de novo ? 17) Pyridoxal phosphate plays a mysterious role in the synthesis of which amino acid?...
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- Winter '10
- Folic acid, Vitamin B12, Methionine, individual methyl groups, reduced one-carbon units