Linked Life Data

20303845

Source:http://linkedlifedata.com/resource/pubmed/id/20303845

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2010-3-22
pubmed:abstractText
We introduce proteolytic scanning calorimetry, a modification of the differential scanning calorimetry approach to the determination of protein stability in which a proteolytic enzyme (thermolysin) is used to mimic a harsh environment. This methodology allows the straightforward calculation of the rate of irreversible denaturation as a function of temperature and concentration of proteolytic enzyme and, as a result, has the potential to probe efficiently the fundamental biophysical features of protein kinetic stability. In the particular case of Escherichia coli thioredoxin (used as an illustrative example in this article), we find that the rate of irreversible denaturation is determined by 1), the global unfolding mechanism at low thermolysin concentrations, indicating that thermodynamic stability may contribute directly to the kinetic stability of thioredoxin under moderately harsh conditions and 2), the rate of unfolding at high thermolysin concentrations, indicating that the free-energy barrier for unfolding may act as a safety mechanism that ensures significant kinetic stability, even in very harsh environments. This thioredoxin picture, however, is by no means expected to be general and different proteins may show different patterns of kinetic stabilization. Proteolytic scanning calorimetry is particularly well-suited to probe this diversity at a fundamental biophysical level.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-10813831, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-11231301, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-11797014, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-12560553, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-15491624, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-15751972, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-15782190, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-16891314, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-16935299, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-17376875, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-17400245, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-18992756, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-19431826, http://linkedlifedata.com/resource/pubmed/commentcorrection/20303845-3365417
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1542-0086
pubmed:author
pubmed:copyrightInfo
Copyright 2010 Biophysical Society. Published by Elsevier Inc. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
17
pubmed:volume
98
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
L12-4
pubmed:dateRevised
2011-7-26
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Proteolytic scanning calorimetry: a novel methodology that probes the fundamental features of protein kinetic stability.
pubmed:affiliation
Departamento de Quimica Fisica, Facultad de Ciencias, Universidad de Granada, Granada, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't