Contacts Between Gamma Delta Resolvase and the Gamma Delta Res Site

Overview

Journal EMBO J

Specialties Biotechnology
Molecular Biology

Date 1987 Mar 1

PMID 3034611

Citations 15

Authors

E Falvey

N D Grindley

Affiliations

Soon will be listed here.

Abstract

We have investigated the interaction between resolvase and the res site of the transposon gamma delta by methylation and ethylation interference experiments. We have examined the effect of these DNA modifications both on binding and resolution in vitro. Major groove methylations within a 9 bp sequence that borders each site inhibit binding of resolvase to that site. Ethylation of certain phosphates within, and adjacent to, this border sequence inhibits binding. Together, these interference points define a contact region, present at all three res sites. In vitro resolution is inhibited only by modifications within site I. Inhibition of resolution by methylation of adenines at the center of site I suggests that minor groove contacts near the crossover may be required for resolution activity.

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