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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Crystal structure of RecBCD enzyme reveals a machine for processing DNA breaks

Article Abstract:

The crystal structure of RecBCD bound to a DNA substrate is presented. The DNA duplex is split across the RecC subunit to create a fork with the separated strands each heading towards different helicase motor subunits. The strands pass along tunnels within the complex, both emerging adjacent to the nuclease domain of RecB.

Author: Kowalczykowski, Stephen C., Singleton, Martin R., Wigley, Dale B., Dillingham, Mark S., Gaudier, Martin
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
DNA polymerases

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Structure of Escherichia coli RNase E catalytic domain and implications for RNA turnover

Article Abstract:

The crystal structures of the catalytic domain of Escherichia coli RNase E are reported as trapped allosteric intermediates with RNA substrates. The subdomain encompassing the active site is structurally congruent to a deoxyribonuclease that makes an unexpected link in the evolutionary history of RNA and DNA nucleases.

Author: Callaghan, Anastasia J., Marcaida, Maria Jose, Stead, Jonathan A., McDowall, Kenneth J., Scott, William G., Luisi, Ben F.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
RNA, Crystals, Crystal structure

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RecBCD enzyme is a bipolar DNA helicase

Article Abstract:

Experiments are performed to find the relation between the RecBCD enzyme and DNA helicases. The reasons why RecB and RecD are both active in intact RecBCD are mentioned.

Author: Dillingham, M.S., Spies, M., Kowalczykowski, S.C.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
DNA synthesis

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Subjects list: Research, United States, Nucleases, Escherichia coli
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