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References in periodicals archive ?
The ability of MTX to inhibit dihydrofolate reductase gives rise to reduced production of tetrahydrofolate and methyltetrahydrofolate, which are methyl donors in chemical reactions resulting in the production of methionine and S-adenosylmethionine and ultimately polyamines.
Second is the fact that some women may not have all the enzymes necessary to convert the synthetic form into tetrahydrofolate.
In an experiment by Idrees et al (44) NO donors decreased [14C] methyl tetrahydrofolate incorporation into protein; and homocysteine reduced the effectiveness of PAPA-NONOate (propylamine prompylamine NONOate) as an inhibitor of de novo purine nucleotide synthesis.
Rima Rozen & Philippe Goyette, "Methods for detecting methylene tetrahydrofolate reductase allelic variants" U.
The metabolite 5, 10 methylene tetrahydrofolate is not formed, and this is specifically required for conversion of deoxyuridylate to thymidy-late, one of the four essential bases in DNA synthesis.
12] is a necessary cofactor for the conversion of 5-methyl-tetrahydrofolate to tetrahydrofolate, which can then reenter the pathway necessary for purine and thymine synthesis.
Assays involved the use of the 96-well microplate technique with standard 5-formyl tetrahydrofolate and assayed plasma.
Extensive analysis for an underlying hypercoagulable state only revealed combined heterozygosity for G20210A gene expression and C677T methylene tetrahydrofolate reductase (MTHFR) mutation.
One form of the present invention is a fused gene encoding for methylene tetrahydrofolate reductase (MTHFR) made up of an N-terminal domain from a yeast organism and a C-terminal domain from a plant species.
4% of the population, or by a thermolabile variant mutation in methylene tetrahydrofolate reductase (MTHFR).
MTHFR is a key enzyme in the folate pathway that reduces the 5,10-methylene derivative of tetrahydrofolate to the 5-methyl form.
Increasing interest in molecular defects in coagulation and fibrinolysis and in hematological malignancies will provide an impetus for the development of a lab-on-a-chip that can study a variety of molecular defects simultaneously, such as those in factor V, prothrombin, and the enzyme methyl tetrahydrofolate reductase gene.