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A Bacterial Toxin That Controls Cell Cycle Progression as a Deoxyribonuclease I-Like Protein

Lara-Tejero, Maria, Galán, Jorge E.·2000·Science

Abstract

Many bacterial pathogens encode a multisubunit toxin, termed cytolethal distending toxin (CDT), that induces cell cycle arrest, cytoplasm distention, and, eventually, chromatin fragmentation and cell death. In one such pathogen, Campylobacter jejuni , one of the subunits of this toxin, CdtB, was shown to exhibit features of type I deoxyribonucleases. Transient expression of this subunit in cultured cells caused marked chromatin disruption. Microinjection of low amounts of CdtB induced cytoplasmic distention and cell cycle arrest. CdtB mutants with substitutions in residues equivalent to those required for catalysis or magnesium binding in type I deoxyribonucleases did not cause chromatin disruption. CDT holotoxin containing these mutant forms of CdtB did not induce morphological changes or cell cycle arrest.

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Metadata

Authors
Lara-Tejero, M., & Galán, J. E.
Venue
Science
Published
2000-10-13
Volume
290
Issue
5490
Pages
354-357
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2050515087
Cited by
549
References
0
FWCI
43.60
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A Bacterial Toxin That Controls Cell Cycle Progression as a Deoxyribonuclease I-Like Protein. https://app.cochat.ai/papers/10.1126/science.290.5490.354
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Lara-Tejero, M., & Galán, J. E. (2000). A Bacterial Toxin That Controls Cell Cycle Progression as a Deoxyribonuclease I-Like Protein. Science. https://doi.org/10.1126/science.290.5490.354

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