Methylation Cycle Flashcards
1
Q
what activates the enzyme Methionine Synthase
A
B12
2
Q
Methionine->homocysteine
A
demethylation
3
Q
homocystein-> methionine
A
methylation
4
Q
what does B12 give to homocysteine
A
methyl group
5
Q
what does a B9 deficiency affect
A
B12 and vice versa
6
Q
B12 deficiency causes which anemia
A
pernicious (lacking intrinsic factor)
megaloblastic (vegetarian)
7
Q
what happens if you are deficient in b-vitamins during remethylation cycle
A
you will create a methionine deficiency
