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Prostaglandins (PGs) of the J2 series form in vivo and exert effects on a variety of biological processes. While most of PGs mediate their effects through G protein-coupled receptors, the mechanism of action for the J2 series of PGs remains unclear. Here, we report the PGJ2 and its derivatives are efficacious activators of peroxisome proliferator-activated(More)
Tetracyclines (doxycycline and minocycline) inhibit inducible NO synthase expression and augment cyclooxygenase (COX)-2 expression and PGE2 production. In contrast, chemically modified tetracyclines (CMTs), such as CMT-3 and -8 (but not CMT-1, -2, and -5), that lack antimicrobial activity, inhibit both NO and PGE2 production in LPS-stimulated murine(More)
The replication initiator protein of the plasmid R6K binds to seven contiguous 22 bp direct repeats that form an indispensable part of the three replication origins alpha, beta, and gamma. Binding of the initiator to the direct repeats induced a marked bending of the region of gamma replication origin. Binding of the initiator also promoted unwinding of the(More)
The replication origin gamma of plasmid R6K in certain miniplasmids is kept silent by a silencer RNA. We have identified a major and three minor transcripts that are synthesized in a direction antiparallel and complementary to the silencer RNA. The major RNA, called the activator, is essential for replication from ori gamma. The complementary nature of the(More)
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