>In reply to article <CB8sFI.Hy6 at news.cis.umn.edu>, djs1539 at cc.utah.edu (SEGAL,
>The molecule you quest for is psoralen. Psoralen is a very well characterized
>intercalator which, upon UV (apx. 650nm) irradiation, forms mono- and
>di-adducts primarily with pyrimidine bases, in fact primarily thymidines.
I think you mean apx. _250_ nm for UV irradiation; 650 nm is obviously in
the visible light range.
William R. Morgan
The College of Wooster
Department of Biology
931 College St.
Wooster, OH 44691
E-mail: wmorgan at acs.wooster.edu