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Eleri Hughes 《Biochemical and biophysical research communications》2010,401(3):370-375
The association between the cardiac transmembrane proteins phospholamban and sarcoplasmic reticulum Ca2+ ATPase (SERCA2a) regulates the active transport of Ca2+ into the sarcoplasmic reticulum (SR) lumen and controls the contraction and relaxation of the heart. Heart failure (HF) and cardiac hypertrophy have been linked to defects in Ca2+ uptake by the cardiac SR and stimulation of calcium transport by modulation of the PLB-SERCA interaction is a potential therapy. This work is part of an effort to identify compounds that destabilise the PLB-SERCA interaction in well-defined membrane environments. It is shown that heparin-derived oligosaccharides (HDOs) interact with the cytoplasmic domain of PLB and consequently stimulate SERCA activity. These results indicate that the cytoplasmic domain of PLB is functionally important and could be a valid target for compounds with drug-like properties. 相似文献
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