Fatty-acid substrate interactions with cyclo-oxygenases.
Fatty-acid substrate interactions with cyclo-oxygenases.
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DOI：
10.1007/978-3-662-04047-8_3
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
W. Smith;C. Rieke;E. Thuresson;A. Mulichak;R. Garavito
中科院分区：
文献类型：
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作者：
W. Smith;C. Rieke;E. Thuresson;A. Mulichak;R. Garavito
Prostaglandin endoperoxide H synthases 1 and -2 (PGHS-1 and -2) convert arachidonic acid and O2(along with two reducing equivalents) to PGH2— the committing step in the formation of prostanoids (Smith and DeWitt 1996; Smith et al. 1996). PGHS-1 is often referred to as the constitutive enzyme, whereas PGHS-2 is known as the inducible isoform. They differ from one another mainly with respect to their temporal patterns of expression. The reason for the existence of the two PGHS isozymes is still unknown. One possibility is that PGHS-2 is induced and then functions at relatively low fatty-acid substrate and hydroperoxide-activator concentrations to generate prostanoid products during early stages of cell replication or differentiation, whereas PGHS-1 forms products that are involved in “housekeeping” functions when circulating hormones act on cells acutely to cause the release of higher concentrations of arachidonate (Capdevila et al. 1995; Kulmacz and Wang 1995; Kulmacz 1998; So et al. 1998).
