High-pressure chemical biology and biotechnology

JL Silva, AC Oliveira, TCRG Vieira… - Chemical …, 2014 - ACS Publications
In his memorable book published in 1949, The Physics of High Pressure, 1 Bridgman states
that “it is a well-known result of thermodynamics that a substance is only completely …

Cardiac troponin and tropomyosin: structural and cellular perspectives to unveil the hypertrophic cardiomyopathy phenotype

MA Marques, GAP De Oliveira - Frontiers in physiology, 2016 - frontiersin.org
Inherited myopathies affect both skeletal and cardiac muscle and are commonly associated
with genetic dysfunctions, leading to the production of anomalous proteins. In …

A hypothesis to reconcile the physical and chemical unfolding of proteins

GAP de Oliveira, JL Silva - Proceedings of the National …, 2015 - National Acad Sciences
High pressure (HP) or urea is commonly used to disturb folding species. Pressure favors the
reversible unfolding of proteins by causing changes in the volumetric properties of the …

Amide hydrogens reveal a temperature-dependent structural transition that enhances site-II Ca2+-binding affinity in a C-domain mutant of cardiac troponin C

T Veltri, GAP de Oliveira, EA Bienkiewicz, FL Palhano… - Scientific reports, 2017 - nature.com
The hypertrophic cardiomyopathy-associated mutant D145E, in cardiac troponin C (cTnC) C-
domain, causes generalised instability at multiple sites in the isolated protein. As a result …

Probing conformational and functional substates of calmodulin by high pressure FTIR spectroscopy: influence of Ca 2+ binding and the hypervariable region of K …

N Erwin, S Patra, R Winter - Physical Chemistry Chemical Physics, 2016 - pubs.rsc.org
The ubiquitous Ca2+-sensing protein calmodulin (CaM) interacts with more than 300
diverse target proteins that are involved in numerous signaling pathways in eukaryotic cells …

Allosteric transmission along a loosely structured backbone allows a cardiac troponin C mutant to function with only one Ca2+ ion

MA Marques, JR Pinto, AH Moraes, A Iqbal… - Biophysical …, 2017 - cell.com
Hypertrophic cardiomyopathy (HCM) is one of the most common cardiomyopathies, and a
major cause of sudden death in young athletes. The Ca 2+ sensor of the sarcomere, cardiac …

Intramolecular Dynamics within the N-Cap-SH3-SH2 Regulatory Unit of the c-Abl Tyrosine Kinase Reveal Targeting to the Cellular Membrane*♦

GAP de Oliveira, EG Pereira, GDS Ferretti… - Journal of Biological …, 2013 - ASBMB
c-Abl is a key regulator of cell signaling and is under strict control via intramolecular
interactions. In this study, we address changes in the intramolecular dynamics coupling …

The missing links within troponin

MA Marques, MS Parvatiyar, W Yang… - Archives of biochemistry …, 2019 - Elsevier
The cardiac contraction-relaxation cycle is controlled by a sophisticated set of machinery. Of
particular interest, is the revelation that allosteric networks transmit effects of binding at one …

Conformational thermodynamics guided structural reconstruction of biomolecular fragments

S Sikdar, J Chakrabarti, M Ghosh - Molecular BioSystems, 2016 - pubs.rsc.org
Computational prediction of structure for macromolecular fragments is a formidable
challenge. Here we show that the differences in conformational thermodynamics, computed …

High pressure studies on the misfolding and aggregation of p53 in cancer and of α-synuclein in Parkinson's disease

GAP de Oliveira, MA Marques, MM Pedrote… - High Pressure …, 2019 - Taylor & Francis
High pressure research can be used to aid in answering why some polypeptide chains
reversibly unfold and others adopt a misfolding conformation culminating in aggregation …