CHAPTER 9: Structure, Function and Regulation of Human Heme-based Dioxygenases

Ariel Lewis-Ballester, Khoa N. Pham, Mingxiang Liao, Maria Almira Correia, Syun-Ru Yeh

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Dioxygenases belong to one of the three major classes of heme-based enzymes that utilize atmospheric O2 as a substrate. Oxidases, such as cytochrome c oxidase, reduce O2 to two water molecules by utilizing four electrons and four protons, and harness the redox energy to pump four protons across the protein matrix. Monooxygenases, such as P450, convert one atom of dioxygen to a water by consuming two electrons and two protons, and exploit the redox energy to insert the other oxygen atom into an organic substrate. Dioxygenases, including tryptophan dioxygenase (TDO) and indoleamine 2,3-dioxygenase 1 (IDO1), are unique, and least understood, as they are capable of inserting both atoms of O2 into Trp without using any electrons and protons. In Part A of this chapter, we review the structure and function relationships of human TDO and IDO1 and compare them with those of bacterial TDOs and two dioxygenase analogs, PrnB and MarE. In Part B we outline the mechanisms by which the TDO and IDO1 functions are regulated in vivo by a variety of effectors under various (patho)physiological conditions.

LanguageEnglish (US)
Title of host publicationDioxygen-dependent Heme Enzymes
EditorsMasao Ikeda-Saito, Emma Raven
PublisherRoyal Society of Chemistry
Pages181-221
Number of pages41
Edition13
DOIs
StatePublished - Jan 1 2019

Publication series

NameRSC Metallobiology
No.13
Volume2019-January
ISSN (Print)2045-547X

Fingerprint

Dioxygenases
Indoleamine-Pyrrole 2,3,-Dioxygenase
Heme
Protons
Tryptophan
Atoms
Electrons
Oxidation-Reduction
Oxygen
Tryptophan Oxygenase
Water
Electron Transport Complex IV
Substrates
Proton Pumps
Mixed Function Oxygenases
Oxidoreductases
Pumps
Molecules
Enzymes
Proteins

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology (miscellaneous)

Cite this

Lewis-Ballester, A., Pham, K. N., Liao, M., Correia, M. A., & Yeh, S-R. (2019). CHAPTER 9: Structure, Function and Regulation of Human Heme-based Dioxygenases. In M. Ikeda-Saito, & E. Raven (Eds.), Dioxygen-dependent Heme Enzymes (13 ed., pp. 181-221). (RSC Metallobiology; Vol. 2019-January, No. 13). Royal Society of Chemistry. https://doi.org/10.1039/9781788012911-00181

CHAPTER 9 : Structure, Function and Regulation of Human Heme-based Dioxygenases. / Lewis-Ballester, Ariel; Pham, Khoa N.; Liao, Mingxiang; Correia, Maria Almira; Yeh, Syun-Ru.

Dioxygen-dependent Heme Enzymes. ed. / Masao Ikeda-Saito; Emma Raven. 13. ed. Royal Society of Chemistry, 2019. p. 181-221 (RSC Metallobiology; Vol. 2019-January, No. 13).

Research output: Chapter in Book/Report/Conference proceedingChapter

Lewis-Ballester, A, Pham, KN, Liao, M, Correia, MA & Yeh, S-R 2019, CHAPTER 9: Structure, Function and Regulation of Human Heme-based Dioxygenases. in M Ikeda-Saito & E Raven (eds), Dioxygen-dependent Heme Enzymes. 13 edn, RSC Metallobiology, no. 13, vol. 2019-January, Royal Society of Chemistry, pp. 181-221. https://doi.org/10.1039/9781788012911-00181
Lewis-Ballester A, Pham KN, Liao M, Correia MA, Yeh S-R. CHAPTER 9: Structure, Function and Regulation of Human Heme-based Dioxygenases. In Ikeda-Saito M, Raven E, editors, Dioxygen-dependent Heme Enzymes. 13 ed. Royal Society of Chemistry. 2019. p. 181-221. (RSC Metallobiology; 13). https://doi.org/10.1039/9781788012911-00181
Lewis-Ballester, Ariel ; Pham, Khoa N. ; Liao, Mingxiang ; Correia, Maria Almira ; Yeh, Syun-Ru. / CHAPTER 9 : Structure, Function and Regulation of Human Heme-based Dioxygenases. Dioxygen-dependent Heme Enzymes. editor / Masao Ikeda-Saito ; Emma Raven. 13. ed. Royal Society of Chemistry, 2019. pp. 181-221 (RSC Metallobiology; 13).
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