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The Role of Hemoproteins: Hemoglobin, Myoglobin and Neuroglobin in Endogenous Thiosulfate Production Processes

Chair of Medical Biochemistry, Jagiellonian University Collegium Medicum ,7 Kopernika Street, Kraków 31-034, Poland
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Int. J. Mol. Sci. 2017, 18(6), 1315; https://doi.org/10.3390/ijms18061315
Received: 5 May 2017 / Revised: 14 June 2017 / Accepted: 16 June 2017 / Published: 20 June 2017
(This article belongs to the Special Issue Metalloproteins 2017)
Thiosulfate formation and biodegradation processes link aerobic and anaerobic metabolism of cysteine. In these reactions, sulfite formed from thiosulfate is oxidized to sulfate while hydrogen sulfide is transformed into thiosulfate. These processes occurring mostly in mitochondria are described as a canonical hydrogen sulfide oxidation pathway. In this review, we discuss the current state of knowledge on the interactions between hydrogen sulfide and hemoglobin, myoglobin and neuroglobin and postulate that thiosulfate is a metabolically important product of this processes. Hydrogen sulfide oxidation by ferric hemoglobin, myoglobin and neuroglobin has been defined as a non-canonical hydrogen sulfide oxidation pathway. Until recently, it appeared that the goal of thiosulfate production was to delay irreversible oxidation of hydrogen sulfide to sulfate excreted in urine; while thiosulfate itself was only an intermediate, transient metabolite on the hydrogen sulfide oxidation pathway. In the light of data presented in this paper, it seems that thiosulfate is a molecule that plays a prominent role in the human body. Thus, we hope that all these findings will encourage further studies on the role of hemoproteins in the formation of this undoubtedly fascinating molecule and on the mechanisms responsible for its biological activity in the human body. View Full-Text
Keywords: hemoglobin; hydrogen sulfide; myoglobin; neuroglobin; thiosulfate hemoglobin; hydrogen sulfide; myoglobin; neuroglobin; thiosulfate
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MDPI and ACS Style

Bilska-Wilkosz, A.; Iciek, M.; Górny, M.; Kowalczyk-Pachel, D. The Role of Hemoproteins: Hemoglobin, Myoglobin and Neuroglobin in Endogenous Thiosulfate Production Processes. Int. J. Mol. Sci. 2017, 18, 1315.

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