3 rezultatus
During the onset of transformation, Rous sarcoma virus-infected cells undergo characteristic morphological changes that reflect the biochemical events induced by the viral src gene. Temperature downshift experiments using chick embryo cells infected with transformation-defective
Astins, antitumour cyclic pentapeptides, were isolated from the Aster tataricus. Their chemical structures, consist of a 16-membered ring system containing a unique beta,gamma-dichlorinated proline [Pro(Cl)2], other non-coded amino acid residues and a cis conformation in one of the peptide bonds.
Astins, a family of cyclopentapeptides, isolated from the roots of a medicinal plant Aster tataricus (Compositae), show antitumour activity. Their chemical structures consist of a 16-membered ring system containing a unique beta,gamma-dichlorinated proline [Pro(Cl2)], other non-coded amino acid