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Dive into the research topics where David G. Osterman is active.

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Featured researches published by David G. Osterman.


Analytical Biochemistry | 1990

A fluorometric assay for HIV-protease activity using high-performance liquid chromatography

Paul P. Tamburini; Robert N. Dreyer; Jutta Hansen; Jack Letsinger; Jim Elting; Ann Gore-Willse; Robert Dally; Rudolf Dr. Hanko; David G. Osterman; Michael E. Kamarck; Heeja Yoo-Warren

A rapid sensitive method for the quantification of in vitro HIV-protease activity has been developed on the basis of the endoproteolytic conversion of N-Dns-SQ-NYPIV to N-Dns-SQNY. The use of the N-dansyl group as a fluorescence label was shown to not significantly alter the apparent kinetic parameters for the peptide-enzyme interaction. Using fluorescence detection, the dansylated product and unconverted substrate are detected in a single rapid (3 min) isocratic reverse-phase HPLC separation in quantities as low as 0.2 pmol. The method is highly reproducible and suited to a variety of applications including the analysis of large sample numbers and rigorous enzymological studies.


Archive | 1993

2-oxoethyl derivatives as immunosuppressants

Richard D. Connell; David G. Osterman; Michael E Katz


Archive | 1993

Aminomethylene-peptides as immunosuppressants

Richard D. Connell; David G. Osterman; Michael E Katz; Rudolf H. Hanko; Stephan Schneider


Archive | 1994

Sulfonamide aminomethylene derivatives as immunosuppressants

Richard D. Connell; David G. Osterman; Michael E Katz; Robert D. Dally


Archive | 1994

Aminomethylene derivatives as immunosuppressants

Richard D. Connell; David G. Osterman; Michael E Katz; Robert Dally


Archive | 1994

Novel aminomethylene-peptides as immunosuppressants

Richard D. Connell; David G. Osterman; Michael E Katz; Rudolf H. Hanko; Stephan Schneider


Archive | 1994

Derives de l'aminomethylene utilises comme immunosuppresseurs

Richard D. Connell; David G. Osterman; Michael E Katz; Robert Dally


Archive | 1994

New aminomethylene derivative as immunosuppressant

Richard D. Connell; Robert Dally; Michael E Katz; David G. Osterman; デイビツド・ジー・オスターマン; マイケル・イー・カツツ; リチヤード・デイ・コンネル; ロバート・デイ・ダリー


Archive | 1994

Sulfonamidaminomethylenderivate als Immunsuppressiva Sulfonamidaminomethylenderivate as immunosuppressants

Richard D. Connell; David G. Osterman; Michael E Katz; Robert Dally


Archive | 1994

Aminomethylene derivatives sulfonamide as immunosuppressants.

Richard D. Connell; David G. Osterman; Michael E Katz; Robert Dally

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