Oligomerization of the plasma membrane calcium pump involves two regions with different thermal stability

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Abstract

Ca2+ pump dimerization was studied by using a combined approach of thermal denaturation and fluorescence resonance energy transfer. The measurement of calcium pump ability to dimerize after the unfolding of individual functional domains of the enzyme demonstrated the existence of two different regions involved in the self-association process. One of these regions is highly susceptible to thermal unfolding and was identified as the calmodulin (CaM)-binding domain. The other region whose thermal stability is higher than those of the catalytic and CaM-binding domains could be related with the previously found C28W-binding regions. (C) 2000 Federation of European Biochemical Societies.

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Levi, V., Rossi, J. P. F. C., Castello, P. R., & Flecha, L. G. (2000). Oligomerization of the plasma membrane calcium pump involves two regions with different thermal stability. FEBS Letters, 483(2–3), 99–103. https://doi.org/10.1016/S0014-5793(00)02093-7

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