Calcium buffering in the heart in health and disease

GL Smith, DA Eisner - Circulation, 2019 - Am Heart Assoc
Changes of intracellular Ca2+ concentration regulate many aspects of cardiac myocyte
function. About 99% of the cytoplasmic calcium in cardiac myocytes is bound to buffers, and …

Designing proteins to combat disease: Cardiac troponin C as an example

JP Davis, V Shettigar, SB Tikunova, SC Little… - Archives of biochemistry …, 2016 - Elsevier
Throughout history, muscle research has led to numerous scientific breakthroughs that have
brought insight to a more general understanding of all biological processes. Potentially one …

Structural changes beyond the EF-hand contribute to apparent calcium binding affinities: insights from parvalbumins

K Immadisetty, B Sun… - The Journal of Physical …, 2021 - ACS Publications
Members of the parvalbumin (PV) family of calcium (Ca2+) binding proteins (CBPs) share a
relatively high level of sequence similarity. However, their Ca2+ affinities and selectivities …

Engineered troponin C constructs correct disease-related cardiac myofilament calcium sensitivity

B Liu, RS Lee, BJ Biesiadecki, SB Tikunova… - Journal of Biological …, 2012 - ASBMB
Aberrant myofilament Ca 2+ sensitivity is commonly observed with multiple cardiac
diseases, especially familial cardiomyopathies. Although the etiology of the …

In search for globally disordered apo-parvalbumins: Case of parvalbumin β-1 from coho salmon

AA Vologzhannikova, PA Khorn, AS Kazakov… - Cell calcium, 2017 - Elsevier
Parvalbumin (PA) is a classical EF-hand calcium-binding protein of muscle, neuronal, and
other tissues, and a major fish allergen. Although certain apo-PAs lack tertiary structure …

Magnesium Ions Moderate Calcium-Induced Calcium Release in Cardiac Calcium Release Sites by Binding to Ryanodine Receptor Activation and Inhibition Sites

B Iaparov, I Baglaeva, I Zahradník… - Frontiers in …, 2022 - frontiersin.org
Ryanodine receptor channels at calcium release sites of cardiac myocytes operate on the
principle of calcium-induced calcium release. In vitro experiments revealed competition of …

Understanding ion binding affinity and selectivity in β-parvalbumin using molecular dynamics and mean spherical approximation theory

AN Kucharski, CE Scott, JP Davis… - The Journal of …, 2016 - ACS Publications
Parvalbumin (PV) is a globular calcium (Ca2+)-selective protein expressed in a variety of
biological tissues. Our computational studies of the rat β-parvalbumin (β-PV) isoform seek to …

Effects of modified parvalbumin EF-hand motifs on cardiac myocyte contractile function

ML Asp, FV Sjaastad, JK Siddiqui, JP Davis… - Biophysical journal, 2016 - cell.com
Cardiac gene delivery of parvalbumin (Parv), an EF-hand Ca 2+ buffer, has been studied as
a therapeutic strategy for diastolic heart failure, in which slow Ca 2+ reuptake is an important …

Divergent soybean calmodulins respond similarly to calcium transients: Insight into differential target regulation

SD Walton, H Chakravarthy, V Shettigar… - Frontiers in Plant …, 2017 - frontiersin.org
Plants commonly respond to stressors by modulating the expression of a large family of
calcium binding proteins including isoforms of the ubiquitous signaling protein calmodulin …

Comprehensive analysis of the roles of 'black'and 'gray'clusters in structure and function of rat β-parvalbumin

SE Permyakov, AA Vologzhannikova, PA Khorn… - Cell Calcium, 2018 - Elsevier
Recently we found two highly conserved structural motifs in the proteins of the EF-hand
calcium binding protein family. These motifs provide a supporting scaffold for the Ca 2+ …