The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 1996
Filed:
Nov. 14, 1994
Applicant:
Inventors:
George R Pettit, Paradise Valley, AZ (US);
Jayaram K Srirangam, Tempe, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07K / ;
U.S. Cl.
CPC ...
514 11 ; 530317 ; 514-9 ;
Abstract
The cytostatic cycloheptapeptide stylostatin 2 was isolated respectively, from the South and Western Pacific Ocean sponges Stylotella sp. and Phakellia costata. Structural determination was accomplished by utilizing high-field (500 MHz) 2D-NMR experiments and confirmed by an X-ray crystal structure determination to provide the assignment cyclo(Pro-Leu-Ile-Phe-Ser-Pro-Ile). The absolute configuration was established by chiral gas chromatographic analytical technique. The cyclic heptapeptide backbone was found to include a .beta.-turn, type VIa, incorporating a cis peptide bond, at -Ser-Pro.