An insect ecdysis inhibitor from the African medicinal plant, Plumbago capensis (Plumbaginaceae); A naturally occurring chitin synthetase inhibitor.
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چکیده
منابع مشابه
Stability of a Naturally Occurring Virus Inhibitor
We recently described a virus inhibitor (contact-blocking virus inhibitor) which was produced spontaneously by untransformed human and murine cells in tissue culture (S. Baron and L. McKerlie, Infect. Immun. 32:449-453, 1981). This contact-blocking virus inhibitor was characterized by broad antiviral activity, high potency, and reversible inhibition of viral attachment. Unlike interferon, the a...
متن کاملAnhydroretinol: a naturally occurring inhibitor of lymphocyte physiology
Vitamin A (retinol) is an essential cofactor for growth of B lymphocytes in culture and for activation of T lymphocytes by antigen receptor-mediated signals. 14-hydroxy-4,14-retro-retinol (14-HRR) a metabolite of retinol, has been implicated as the intracellular mediator of this effect. Anhydroretinol (AR) is a retinol derivative with retro structure produced in activated human B lymphocytes an...
متن کاملA Naturally Occurring Inhibitor of Mitochondrial Adenosine Triphosphatase.
Freshly prepared mitochondria have little or no adenosine triphosphatase (ATPase) activity (1). On aging, or in the presence of uncoupling agents such as 2,4-dinitrophenol, considerable activity develops (l-4). The striking similarities between conditions which evoke ATPase activity and those which uncouple oxidative phosphorylation have led to the assumption that the ATPase activity is a refle...
متن کاملActin is the naturally occurring inhibitor of deoxyribonuclease I.
Various tissues and cells in culture contain a specific inhibitor of DNase I (EC 3.1.4.5). In this paper evidence is presented that this inhibitor is actin, one of the major structural proteins of muscle and nonmuscle cells. (a) The inhibitor is a major cellular component constituting 5-10% of the soluble protein. (b) It migrates with actin on sodium dodecyl sulfate-polyacrylamide gel electroph...
متن کاملAn examination of methods used to assay potato tuber invertase and its naturally occurring inhibitor.
Confirming an earlier report, it was shown that the endogenous inhibitor of potato tuber invertase forms an essentially undissociable complex with the enzyme. Consequently, several previous analyses of potato tuber invertase which were based on equations derived for highly dissociable enzyme-inhibitor complexes are presumed to be in serious error. The complex formation proceeded slowly, requiri...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1983
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.47.911