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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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The contribution of Ca+ calmodulin activation of human erythrocyte AMP deaminase (isoform E) to the erythrocyte metabolic dysregulation of familial phosphofructokinase deficiency.

Erythrocyte membrane leakage of Ca2+ in familial phosphofructokinase deficiency results in a compensatory increase of Ca2+-ATPase activity that depletes ATP and leads to diminished erythrocyte deformability and a higher rate of hemolysis. Lowered ATP levels in circulating erythrocytes are accompanied by increased IMP, indicating that activated AMP deaminase plays a role in this metabolic dysregulation. Exposure to a calmodulin antagonist significantly slows IMP accumulation during experimental energy imbalance in patients' cells to levels that are similar to those in untreated controls, implying that Ca2+-calmodulin is involved in erythrocyte AMP deaminase activation in familial phosphofructokinase deficiency. Therapies directed against activated isoform E may be beneficial in this compensated anemia.[1]

References

  1. The contribution of Ca+ calmodulin activation of human erythrocyte AMP deaminase (isoform E) to the erythrocyte metabolic dysregulation of familial phosphofructokinase deficiency. Sabina, R.L., Waldenström, A., Ronquist, G. Haematologica (2006) [Pubmed]
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