2017
Exploration of Protein Unfolding by Modelling Calorimetry Data from Reheating
MAZURENKO, Stanislav, Antonín KUNKA, Koen BEERENS, Christopher M. JOHNSON, Jiří DAMBORSKÝ et. al.Základní údaje
Originální název
Exploration of Protein Unfolding by Modelling Calorimetry Data from Reheating
Autoři
MAZURENKO, Stanislav (643 Rusko, domácí), Antonín KUNKA (203 Česká republika, domácí), Koen BEERENS (56 Belgie, domácí), Christopher M. JOHNSON (826 Velká Británie a Severní Irsko), Jiří DAMBORSKÝ (203 Česká republika, garant, domácí) a Zbyněk PROKOP (203 Česká republika, domácí)
Vydání
Scientific Reports, London, NATURE PUBLISHING GROUP, 2017, 2045-2322
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10700 1.7 Other natural sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.122
Kód RIV
RIV/00216224:14310/17:00095387
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000416137700009
Klíčová slova anglicky
DIFFERENTIAL SCANNING CALORIMETRY; THERMAL-DENATURATION; THEORETICAL-ANALYSIS; AGGREGATION; STABILITY; LYSOZYME; STABILIZATION; SPECTROSCOPY; TRANSITIONS; PROFILES
Změněno: 3. 4. 2018 15:36, Ing. Nicole Zrilić
Anotace
V originále
Studies of protein unfolding mechanisms are critical for understanding protein functions inside cells, de novo protein design as well as defining the role of protein misfolding in neurodegenerative disorders. Calorimetry has proven indispensable in this regard for recording full energetic profiles of protein unfolding and permitting data fitting based on unfolding pathway models. While both kinetic and thermodynamic protein stability are analysed by varying scan rates and reheating, the latter is rarely used in curve-fitting, leading to a significant loss of information from experiments. To extract this information, we propose fitting both first and second scans simultaneously. Four most common single-peak transition models are considered: (i) fully reversible, (ii) fully irreversible, (iii) partially reversible transitions, and (iv) general three-state models. The method is validated using calorimetry data for chicken egg lysozyme, mutated Protein A, three wild-types of haloalkane dehalogenases, and a mutant stabilized by protein engineering. We show that modelling of reheating increases the precision of determination of unfolding mechanisms, free energies, temperatures, and heat capacity differences. Moreover, this modelling indicates whether alternative refolding pathways might occur upon cooling. The Matlab-based data fitting software tool and its user guide are provided as a supplement.
Návaznosti
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