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Prostaglandin E Synthase, a Terminal Enzyme for Prostaglandin E2 Biosynthesis

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Kudo, Ichiro, Murakami, Makoto·2005·BMB Reports

Abstract

Biosynthesis of prostanoids is regulated by three sequential enzymatic steps, namely phospholipase A2 enzymes, cyclooxygenase (COX) enzymes, and various lineagespecific terminal prostanoid synthases. Prostaglandin E synthase (PGES), which isomerizes COX-derived PGH2 specifically to PGE2, occurs in multiple forms with distinct enzymatic properties, expressions, localizations and functions. Two of them are membrane-bound enzymes and have been designated as mPGES-1 and mPGES-2. mPGES-1 is a perinuclear protein that is markedly induced by proinflammatory stimuli, is down-regulated by antiinflammatory glucocorticoids, and is functionally coupled with COX-2 in marked preference to COX-1. Recent gene targeting studies of mPGES-1 have revealed that this enzyme represents a novel target for anti-inflammatory and anti-cancer drugs. mPGES-2 is synthesized as a Golgi membrane-associated protein, and the proteolytic removal of the N-terminal hydrophobic domain leads to the formation of a mature cytosolic enzyme. This enzyme is rather constitutively expressed in various cells and tissues and is functionally coupled with both COX-1 and COX-2. Cytosolic PGES (cPGES) is constitutively expressed in a wide variety of cells and is functionally linked to COX-1 to promote immediate PGE2 production. This review highlights the latest understanding of the expression, regulation and functions of these three PGES enzymes.

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Metadata

Authors
Kudo, I., & Murakami, M.
Venue
BMB Reports
Published
2005-11-30
Volume
38
Issue
6
Pages
633-638
ISSN
1976-6696 (ISSN-L)
OpenAlex
W1996733510
Cited by
165
References
4
FWCI
5.74
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Prostaglandin E Synthase, a Terminal Enzyme for Prostaglandin E2 Biosynthesis. https://app.cochat.ai/papers/10.5483/bmbrep.2005.38.6.633
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Kudo, I., & Murakami, M. (2005). Prostaglandin E Synthase, a Terminal Enzyme for Prostaglandin E2 Biosynthesis. BMB Reports. https://doi.org/10.5483/bmbrep.2005.38.6.633

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