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@ARTICLE{Artmann:1043688,
author = {Artmann, Gerhard M. and Weiergräber, Oliver H. and
Damiati, Samar and Firat, Ipek Seda and Artmann, Aysegül
Temiz},
title = {{T}he molecular origin of body temperature in homeothermic
species},
journal = {American journal of physiology / Regulatory, integrative
and comparative physiology},
volume = {329},
number = {4},
issn = {0363-6119},
address = {Bethesda, Md.},
publisher = {American Physiological Society},
reportid = {FZJ-2025-02986},
pages = {R509-R597},
year = {2025},
abstract = {We propose the Interfacial Water Quantum-transition model
(IWQ model) as a novel paradigm explaining
temperature-dependent structural and functional transitions
(discontinuities) observed in proteins. The central
postulate states that experimentally measured critical
temperatures, TC, are related to physical reference
temperatures, TW, defined by rotational quantum transitions
of temporarily free water molecules in the protein-water
interface. Applicability of this concept is demonstrated
using transitions observed in two disparate model systems,
viz., hemoglobin and thermosensitive TRP channels. We
propose that the same mechanism underlies the definition of
basal body temperatures in homeotherms, the reference
temperature for humans being TW=36.32°C. Specifically, we
demonstrate that the body temperatures of both human and
chicken (representing the two classes of homeothermic
vertebrates) not only coincide with quantum-transition
reference temperatures but are also related to pronounced
transitions in hemoglobin oxygen saturation. This suggests
that the evolution of body temperatures in different
homeothermic species might involve an interplay between
critical parameters of oxygen supply on the one hand and
quantum-physical rotational transition temperatures of water
on the other. Casting the IWQ-model concept into a concise
formula: Proteins sense and water sets critical
physiological temperatures.},
cin = {IBI-7},
ddc = {610},
cid = {I:(DE-Juel1)IBI-7-20200312},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5241},
typ = {PUB:(DE-HGF)16},
doi = {10.1152/ajpregu.00236.2024},
url = {https://juser.fz-juelich.de/record/1043688},
}