Control over the sequence specificity of DNA alkylation: syntheses and reactions with 32P-end-labelled DNA of N-alkyl-N-nitrosoureas linked to minor groove binding lexitropsins

Autor: B, Gold, K M, Church, R L, Wurdeman, Y, Zhang, F X, Chen
Rok vydání: 1991
Předmět:
Zdroj: IARC scientific publications. (105)
ISSN: 0300-5038
Popis: The syntheses of N-2-chloroethyl-N-nitrosoureas (Cl-ENU) that are covalently linked to a series of minor groove binding lexitropsins related to distamycin A are reported. The lexitropsins of 2-Cl-ENU show a sequence specificity for alkylating an adenine toward the ends of its DNA affinity binding domains. The reaction of DNA with 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea does not yield these products. Therefore, the linking of the 2-Cl-ENU to the minor groove binder qualitatively and quantitatively alters the DNA observed.
Databáze: OpenAIRE