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- W4302308709 abstract "Data for voltage-activation of a potassium channel (Matulef et al. Proc Natl Acad Sci USA 110: 17886-17891. 2013) were, as conventionally done, fitted by the authors by a Boltzmann function, i.e. by a curvilinear profile. Reanalysis of the data reveals however that this interpretation must be rejected in favor of a multiphasic profile, a series of straight lines separated by discontinuous transitions, quite often in the form of noncontiguities (jumps). In contrast to the generally very poor fits to the Boltzmann profiles, the fits to multiphasic profiles are very good. (For the four replicates, the average deviations from the Boltzmann curves were 10- to 100-fold larger than the deviations from the multiphasic profiles.) The difference in the median values was statistically highly significant, P<0.001 in most cases. For the mean values the deviations from the Boltzmann curve were 20-fold larger than the deviations from the multiphasic profile, and the difference in the median values was also highly significant. The curvilinear interpretation must be rejected also because of the uneven distribution of the points around the Boltzmann curves. The combined probability for the four replicates that this uneven distribution is due to chance is less than 0.002. In addition to activation of ion channels, a wide variety of biological as well as non-biological processes and phenomena involving binding, pH, folding/unfolding and effect of chain length can be well represented by multiphasic profiles (Nissen 2015a,b. Posted on arXiv.org with Paper ID arXiv: 1511.06601 and 1512.02561)." @default.
- W4302308709 created "2022-10-06" @default.
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- W4302308709 date "2016-03-16" @default.
- W4302308709 modified "2023-09-27" @default.
- W4302308709 title "Profiles for voltage-activated currents are multiphasic, not curvilinear" @default.
- W4302308709 doi "https://doi.org/10.48550/arxiv.1603.05144" @default.
- W4302308709 hasPublicationYear "2016" @default.
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