The University of Southampton
University of Southampton Institutional Repository

Sequence-specific binding of luzopeptin to DNA

Sequence-specific binding of luzopeptin to DNA
Sequence-specific binding of luzopeptin to DNA

We have examined the binding of luzopeptin, an antitumour antibiotic, to five DNA fragments of varying base composition. The drug forms a tight, possibly covalent, complex with the DNA causing a reduction in mobility on nondenaturing polyacrylamide gels and some smearing of the bands consistent with intramolecular cross-linking of DNA duplexes. DNAaseI and micrococcal nuclease footprinting experiments suggest that the drug binds best to regions containing alternating A and T residues, although no consensus di- or trinucleotide sequence emerges. Binding to other sites is not excluded and at moderate ligand concentrations the DNA is almost totally protected from enzyme attack. Ligand-induced enhancement of DNAaseI cleavage is observed at both AT and GC-rich regions. The sequence selectivity and characteristics of luzopeptin binding are quite different from those of echinomycin, a bifunctional intercalator of related structure.

0305-1048
2489-2507
Fox, Keith R.
9da5debc-4e45-473e-ab8c-550d1104659f
Davies, Heather
c20a0942-d5e1-4afe-8c68-e014204e65dc
Adams, Gill R.
111cc629-b206-45ef-bd6c-07e0a806ff53
Portugal, Jose
03a5b877-a1c2-4125-9897-0fe34426c386
Waring, Michael J.
778971c0-a442-4808-ad80-b333f3dc1597
Fox, Keith R.
9da5debc-4e45-473e-ab8c-550d1104659f
Davies, Heather
c20a0942-d5e1-4afe-8c68-e014204e65dc
Adams, Gill R.
111cc629-b206-45ef-bd6c-07e0a806ff53
Portugal, Jose
03a5b877-a1c2-4125-9897-0fe34426c386
Waring, Michael J.
778971c0-a442-4808-ad80-b333f3dc1597

Fox, Keith R., Davies, Heather, Adams, Gill R., Portugal, Jose and Waring, Michael J. (1988) Sequence-specific binding of luzopeptin to DNA. Nucleic Acids Research, 16 (6), 2489-2507. (doi:10.1093/nar/16.6.2489).

Record type: Article

Abstract

We have examined the binding of luzopeptin, an antitumour antibiotic, to five DNA fragments of varying base composition. The drug forms a tight, possibly covalent, complex with the DNA causing a reduction in mobility on nondenaturing polyacrylamide gels and some smearing of the bands consistent with intramolecular cross-linking of DNA duplexes. DNAaseI and micrococcal nuclease footprinting experiments suggest that the drug binds best to regions containing alternating A and T residues, although no consensus di- or trinucleotide sequence emerges. Binding to other sites is not excluded and at moderate ligand concentrations the DNA is almost totally protected from enzyme attack. Ligand-induced enhancement of DNAaseI cleavage is observed at both AT and GC-rich regions. The sequence selectivity and characteristics of luzopeptin binding are quite different from those of echinomycin, a bifunctional intercalator of related structure.

This record has no associated files available for download.

More information

Published date: 25 March 1988
Additional Information: Funding Information: ACKNOWLEDGMENTS This work was supported by grants from the Cancer Research Campaign the Medical Research Council and the Royal Society. Ue thank Mark Freeman and Dean Gentle for technical assistance.

Identifiers

Local EPrints ID: 475572
URI: http://eprints.soton.ac.uk/id/eprint/475572
ISSN: 0305-1048
PURE UUID: 05edbe48-787a-4b04-bedf-5339d010f8e1
ORCID for Keith R. Fox: ORCID iD orcid.org/0000-0002-2925-7315

Catalogue record

Date deposited: 21 Mar 2023 17:51
Last modified: 18 Mar 2024 02:32

Export record

Altmetrics

Contributors

Author: Keith R. Fox ORCID iD
Author: Heather Davies
Author: Gill R. Adams
Author: Jose Portugal
Author: Michael J. Waring

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×