Unraveling DNA helicases from plant cells*

Unraveling DNA helicases from plant cells* Plant Molecular Biology 33: 947–952, 1997. 947 c 1997 Kluwer Academic Publishers. Printed in Belgium. Mini-review Narendra Tuteja International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110 067, India Received 31 December 1996; accepted in revised form 14 January 1997 Key words: DNA helicase, DNA-dependent ATPase, unwinding enzyme, DNA replication, chloroplasts Introduction since this field is almost untouched by plant biologists. A biochemical technique to determine the unwinding Green plant cells contain three types of organelles, nuc- activity is described first. leus, mitochondria and chloroplasts, which have their own genomes. Each genome replicates, transcribes and expresses its genetic information independent of each Biochemical assay other though there is (probably yet unknown) coordin- ation between them. DNA present in these genomes The helicase assay measures the displacement of is in the double-stranded (ds) form. However, for labelled DNA from a partial duplex molecule as many important DNA transactions, such as replica- described [19, 42]. The biochemical reaction for DNA tion, repair, recombination and in some cases transcrip- helicase catalyzed unwinding is shown in Fig. 1A. tion, the duplex DNA has to be partially unwind for Briefly, the P-labelled partial duplex DNA substrate a short time http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Unraveling DNA helicases from plant cells*

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 1997 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1005769613728
Publisher site
See Article on Publisher Site

Abstract

Plant Molecular Biology 33: 947–952, 1997. 947 c 1997 Kluwer Academic Publishers. Printed in Belgium. Mini-review Narendra Tuteja International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110 067, India Received 31 December 1996; accepted in revised form 14 January 1997 Key words: DNA helicase, DNA-dependent ATPase, unwinding enzyme, DNA replication, chloroplasts Introduction since this field is almost untouched by plant biologists. A biochemical technique to determine the unwinding Green plant cells contain three types of organelles, nuc- activity is described first. leus, mitochondria and chloroplasts, which have their own genomes. Each genome replicates, transcribes and expresses its genetic information independent of each Biochemical assay other though there is (probably yet unknown) coordin- ation between them. DNA present in these genomes The helicase assay measures the displacement of is in the double-stranded (ds) form. However, for labelled DNA from a partial duplex molecule as many important DNA transactions, such as replica- described [19, 42]. The biochemical reaction for DNA tion, repair, recombination and in some cases transcrip- helicase catalyzed unwinding is shown in Fig. 1A. tion, the duplex DNA has to be partially unwind for Briefly, the P-labelled partial duplex DNA substrate a short time

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 14, 2004

References

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