000255491 001__ 255491 000255491 005__ 20240619091807.0 000255491 0247_ $$2doi$$a10.1063/1.4928512 000255491 0247_ $$2ISSN$$a0021-9606 000255491 0247_ $$2ISSN$$a1089-7690 000255491 0247_ $$2WOS$$aWOS:000360440400051 000255491 0247_ $$2Handle$$a2128/18992 000255491 0247_ $$2altmetric$$aaltmetric:4410541 000255491 0247_ $$2pmid$$apmid:26298156 000255491 037__ $$aFZJ-2015-05653 000255491 041__ $$aEnglish 000255491 082__ $$a540 000255491 1001_ $$0P:(DE-Juel1)130849$$aMonkenbusch, M.$$b0$$eCorresponding author$$ufzj 000255491 245__ $$aFast internal dynamics in alcohol dehydrogenase 000255491 260__ $$aMelville, NY$$bAmerican Institute of Physics$$c2015 000255491 3367_ $$2DRIVER$$aarticle 000255491 3367_ $$2DataCite$$aOutput Types/Journal article 000255491 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1457095626_14707 000255491 3367_ $$2BibTeX$$aARTICLE 000255491 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000255491 3367_ $$00$$2EndNote$$aJournal Article 000255491 520__ $$aLarge-scale domain motions in alcohol dehydrogenase (ADH) have been observed previously by neutron spin-echo spectroscopy (NSE). We have extended the investigation on the dynamics of ADH in solution by using high-resolution neutron time-of-flight (TOF) and neutron backscattering (BS) spectroscopy in the incoherent scattering range. The observed hydrogen dynamics were interpreted in terms of three mobility classes, which allowed a simultaneous description of the measured TOF and BS spectra. In addition to the slow global protein diffusion and domain motions observed by NSE, a fast internal process could be identified. Around one third of the protons in ADH participate in the fast localized diffusive motion. The diffusion coefficient of the fast internal motions is around two third of the value of the surrounding D2O solvent. 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