When MTHFR diverts 5,10-MTHF to 5-MTHF production, less 5,10-MTHF is available for TYMS reducing dTMP synthesis and causing the intracellular dUTP/dTTP ratio to shift toward excess dUTP
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We believe that this limited contribution and non-essentiality of caspase-3 for the execution of eryptosis is associated with the absence of the upstream mitochondrial pathways in mature erythrocytes linked with the expulsion of this particular organelle at the terminal stages of erythropoiesis, as well as downstream effectors
32,33,35 The lack of accumulation of intermediary metabolites suggests that the defect is located in the initial step of methionine transformation regulated by SAM synthe-tase
Blesa S, Cortijo J, Mata M, Serrano A, Closa D, et al: Oral N-acetylcysteine attenuates the rat pulmonary inflammatory response to antigen
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