Site-specific modification of the lactose operator with acetylaminofluorene.
AUTOR(ES)
Stöhrer, G
RESUMO
We have synthesized the tetradecamer GAGCXGATAACAAG containing a part of the sequence of the lactose operator. A guanine base in the sequence is replaced by the adduct of the carcinogen 2-acetylaminofluorene with guanine. Under the standard conditions of de-protection, the fluorene moiety is lost, leaving behind a guanine oxidation product. New conditions of de-protection have been developed which allow the isolation of an oligonucleotide containing the adduct of 2-aminofluorene with guanine. The presence of the aminofluorene adduct greatly increases retention on reverse phase chromatography and produces a unique pattern of sequencing bands.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=326239Documentos Relacionados
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