Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Heparin-derived oligosaccharides interact with the phospholamban cytoplasmic domain and stimulate SERCA function
AU - Hughes, Eleri
AU - Edwards, Rachel
AU - Middleton, David A
N1 - Copyright © 2010 Elsevier Inc. All rights reserved.
PY - 2010/10/22
Y1 - 2010/10/22
N2 - The association between the cardiac transmembrane proteins phospholamban and sarcoplasmic reticulum Ca(2+) ATPase (SERCA2a) regulates the active transport of Ca(2+) 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 Ca(2+) 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.
AB - The association between the cardiac transmembrane proteins phospholamban and sarcoplasmic reticulum Ca(2+) ATPase (SERCA2a) regulates the active transport of Ca(2+) 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 Ca(2+) 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.
KW - Animals
KW - Calcium-Binding Proteins
KW - Cytoplasm
KW - Heparin
KW - Oligosaccharides
KW - Protein Structure, Tertiary
KW - Rabbits
KW - Sarcoplasmic Reticulum Calcium-Transporting ATPases
U2 - 10.1016/j.bbrc.2010.09.056
DO - 10.1016/j.bbrc.2010.09.056
M3 - Journal article
C2 - 20851101
VL - 401
SP - 370
EP - 375
JO - Biochemical and Biophysical Research Communications
JF - Biochemical and Biophysical Research Communications
SN - 0006-291X
IS - 3
ER -