cyclopeptide

cy·clo·pep·tide

(sī'klō-pep'tīd),
One of a group of cyclic peptides that inhibit RNA polymerase and thus block protein synthesis. Used as topical antimicrobials, but toxic if ingested. Constituent in mushrooms that causes toxicity (amatoxin).
See also: polymyxin, amatoxin.

cy·clo·pep·tide

(sī'klō-pep'tīd)
A polypeptide lacking terminal -NH2 and -COOH groupsby virtue of their combination to form another peptide link, forming a ring.
References in periodicals archive ?
Antiplasmodial and antimycobacterial cyclopeptide alkaloids have been reported from roots of the plant [24].
Ziziphine N, 0, P and Q, new antiplasmodial cyclopeptide alkaloids from Ziziphus oenoplia var.
Genetic localization of a bruchid resistance gene and its relationship to insecticidal cyclopeptide alkaloids, the vignatic acids, in mungbean (Vigna radiata L.
The present study reports on the antioxidant potential of five cyclopeptide alkaloids isolated from Zizyphus oxyphylla including Oxyphylline-D 1, Nummularin-C 2, Nummularin-R 3, Oxyphylline-B 4, Oxyphylline C 5 using DPPH free radical assay, nitric oxide radical assay and reducing power assay.
RonaCare[R] Cyclopeptide - 5 is a peptide that helps to make skin appear younger and fresher
Include a wide variety of technologies such as Class Flakes, Silica Flakes, Alumina Flakes, Mica and Synthetic Mica, Bismuth Oxychloride, Eusolex UV Pearls, RonaCare[R] Cyclopeptide -5 and many other unique products
Cyclopeptide alkaloid fraction from Zizyphi Spinosi Semen enhances pentobarbital-induced sleeping behaviors.
Arch Personal Care Products; "A New Lipoaminoacid Able to Restore Aging-Induced Modifications in Biomechanical Properties of Human Dermal Fibroblasts and in Functional Properties of Preadipocytes," Carla Perez, Seppic; "Skincare Application for a Novel Cyclopeptide," Howard Epstein, Ph.
Some of the species are reported to have bioactive constituents of different classes, such as lignans [5, 6], cyclopeptides [7, 8], flavonoids [9], flavone glycosides, and phenyl propanoid glycosides [10].