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Article

ATR-FTIR study of the protonation states of the Glu residue in the multicopper oxidases, CueO and bilirubin oxidase.

FEBS letters - 24 Sept 2010

Iwaki Masayo, Kataoka Kunishige, Kajino Tsutomu, Sugiyama Ryosuke, Morishita Hirotoshi, Sakurai Takeshi

Abstract excerpt

Redox-induced protonation state changes of the Glu residue in the multicopper oxidases, CueO and bilirubin oxidase (BO), were studied by attenuated total reflectance-Fourier transform infrared spectroscopy. By monitoring IR bands of the carboxylic acid C=O stretch in the wild-type and Glu-to-Gln mutant enzymes the Glu506 of CueO (Glu463 of BO) was found to be unprotonated in the oxidised and protonated in the...

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PMID: 20727354
DOI: 10.1016/j.febslet.2010.08.018

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ATR

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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