✦ LIBER ✦

Direct electrochemical characterization of Vitreoscilla sp. hemoglobin entrapped in organic films

✍ Scribed by Chunhai Fan; Jun Zhong; Rong Guan; Genxi Li

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 149 KB
Volume: 1649
Category: Article
ISSN: 1570-9639
DOI: 10.1016/s1570-9639(03)00162-6

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✦ Synopsis

The redox properties of a prokaryotic, Vitreoscilla sp. hemoglobin (VHb) in fuzzy organic films are studied with electrochemistry. This VHb exhibits irreversible electrochemical response at bare pyrolytic graphite (PG) electrode surfaces. However, upon being entrapped in organic films, the heterogeneous electron transfer rate of VHb will be sufficiently high to produce a quasi-reversible electrochemical response. The observation of electrocatalysis (reduction of O2) by hemes suggests that the protein can retain its biological activity under these conditions.

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