What is a folate trap?

plz add details if u know ne.......plz answer dis as soon as possible
Answers:
The folate trap involves the 'folate cycle'.

Here is the 'folate cycle' (which is typically drawn contained by a circle):

Tetrahydrofolate (TH4) -> 5,10 Methylene-TH4 -> Methyltetrahydrofolate -> Tetrahydrofolate (TH4)

This is a 'cycle' because TH4 (the starting point) is regenerated.

The problem that can head to the 'folate trap' is that the last step of the cycle, the conversion of methytetrahydrolfolate to TH4 (the enzyme is methylene - tetrahydro - folate - reductase - MTHFR), requires Vitamin B12. In the non-attendance of B12 (Vitamin B12 deficiency is pretty common, especially surrounded by the elderly), the folate cycle gets 'trapped' at methyltetrahydrofolate and can't verbs to regenerate TH4.

High doses of supplemental folate can 'mask' the effects of B12 deficiency by compensating for the trapped folate (as methyltetrahydrofolate). So, high-ranking doses of folate can mask the anemia that would result from a severe B12 not as much as. Chronic B12 deficiency have serious consequences (even without the anemia) such as wound to the nervous system and the creation of a at a tangent neuropathy.

Hope this was positive. Best wishes.
basically to put it simply folate comes contained by from the diet and is needed to make a molecule for example purine within dna..however the pathway to use folate goes through a pathway from folate contained by the diet which then united to a hydorxymethyl group (CH2OH) of serine to make N5,N10 hydroxymethylene FH4. This substrate however instead of carrying on and making N5,N10 methenyl-FH4 and consequently N10-formyl FH4 to incorporate into purine it is instead a substrate for an irreversible recoil to make N5-methyl FH4. The common sense this N5-methyl FH4 is made is to convert a potentially toxic substrate homocysteine in the cell subsidise to methionine and uses an enzyme (methionine synthase) which requires vitiman B12 as a cofactor. . (This homocysteine is a product of S-adenosylmethionine which is an essential methylation reagent for several critical reactions including the methylation of nucleic acids, protein residues and epinephrine). So the folate trap in consequence is that the reaction that creates the substrate is irreversible and the conversion of homocystiene to methionine requires a cofactor (Vitiman B12) that may not be availableto convert this so the folate remains trapped as N5-methyl FH4.
If the cofactor Vit B12 is present next all is right, methionine can be made and FH4 is released and can be incorporated into serine to become the N5,N10-methylene FH4.
I hope this answers your question..:D appropriate luck!


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