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The Area Between Exchange Curves as a Measure of Conformational Differences in Hydrogen-Deuterium Exchange Mass Spectrometry Studies.

ABSTRACT: Hydrogen-deuterium exchange mass spectrometry (HDX-MS) provides information about protein conformational mobility under native conditions. The area between exchange curves, A bec , a functional data analysis concept, was adapted to the interpretation of HDX-MS data and provides a useful measure of exchange curve dissimilarity for tests of significance. Importantly, for most globular proteins under native conditions, A bec values provide an estimate of the log ratio of exchange-competent fractions in the two states, and thus are related to differences in the free energy of microdomain unfolding. Graphical Abstract ?.

SUBMITTER: Mazur SJ

PROVIDER: S-EPMC5907500 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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The Area Between Exchange Curves as a Measure of Conformational Differences in Hydrogen-Deuterium Exchange Mass Spectrometry Studies.

Mazur Sharlyn J SJ Weber Daniel P DP

Journal of the American Society for Mass Spectrometry 20170224 5

Hydrogen-deuterium exchange mass spectrometry (HDX-MS) provides information about protein conformational mobility under native conditions. The area between exchange curves, A <sub>bec</sub> , a functional data analysis concept, was adapted to the interpretation of HDX-MS data and provides a useful measure of exchange curve dissimilarity for tests of significance. Importantly, for most globular proteins under native conditions, A <sub>bec</sub> values provide an estimate of the log ratio of excha ...[more]

PMID: 28236290

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