Cited by 100Redox biology and oxidative stressBacterial Genetics and BiotechnologyMicrobial metabolism and enzyme function

Adaptive Responses to Oxygen Stress in Obligatory Anaerobes Clostridium acetobutylicum and Clostridium aminovalericum

Open access
Kawasaki, Shinji, Watamura, Yusuke, Ono, Masaki, Watanabe, Toshihiro, Takeda, Kouji, Niimura, Youichi·2005·Applied and Environmental Microbiology

Abstract

Clostridium acetobutylicum and Clostridium aminovalericum, both obligatory anaerobes, grow normally after growth conditions are changed from anoxic to microoxic, where the cells consume oxygen proficiently. In C. aminovalericum, a gene encoding a previously characterized H2O-forming NADH oxidase, designated noxA, was cloned and sequenced. The expression of noxA was strongly upregulated within 10 min after the growth conditions were altered to a microoxic state, indicating that C. aminovalericum NoxA is involved in oxygen metabolism. In C. acetobutylicum, genes suggested to be involved in oxygen metabolism and genes for reactive oxygen species (ROS) scavenging were chosen from the genome database. Although no clear orthologue of C. aminovalericum NoxA was found, Northern blot analysis identified many O2-responsive genes (e.g., a gene cluster [CAC2448 to CAC2452] encoding an NADH rubredoxin oxidoreductase-A-type flavoprotein-desulfoferrodoxin homologue-MerR family-like protein-flavodoxin, an operon [CAC1547 to CAC1549] encoding a thioredoxin-thioredoxin reductase-glutathione peroxidase-like protein, an operon [CAC1570 and CAC1571] encoding two glutathione peroxidase-like proteins, and genes encoding thiol peroxidase, bacterioferritin comigratory proteins, and superoxide dismutase) whose expression was quickly and synchronously upregulated within 10 min after flushing with 5% O2. The corresponding enzyme activities, such as NAD(P)H-dependent peroxide (H2O2 and alkyl hydroperoxides) reductase, were highly induced, indicating that microoxic growth of C. acetobutylicum is associated with the expression of a number of genes for oxygen metabolism and ROS scavenging.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1128/aem.71.12.8442-8450.2005

Cites

70 of 70 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. [59]59. Sambrook, J., E. F. Fritsch, and T. Maniatis. 1989. Molecular cloning: a laboratory manual, 2nd ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y.

Cited by

Sorted by citations

Authors
Kawasaki, S., Watamura, Y., Ono, M., Watanabe, T., Takeda, K., & Niimura, Y.
Affiliations
Tokyo University of Agriculture (JP)
Corresponding author
Kawasaki, Shinji
Venue
Applied and Environmental Microbiology
Published
2005-12
Volume
71
Issue
12
Pages
8442-8450
ISSN
  • 0099-2240 (ISSN-L)
  • 1098-5336
OpenAlex
W2134231923
Cited by
100
References
70
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 4 · 2022: 3 · 2021: 6 · 2020: 5 · 2019: 8 · 2018: 4 · 2017: 2 · 2016: 6 · 2015: 3 · 2014: 6 · 2013: 3 · 2012: 4
FWCI
2.76
Type
journal article
Language
en
Open access
Locations
  • Applied and Environmental Microbiology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Tokyo University of Agriculture
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial metabolism and enzyme function
Keywords
Clostridium acetobutylicum, oxygen stress, oxygen metabolism, reactive oxygen species scavenging, Noxa, NADH oxidase, gene expression regulation, superoxide dismutase, glutathione peroxidase, flavodoxin, bacterioferritin, adaptive response
MeSH terms
Acclimatization, Amino Acid Sequence, Bacteria, Anaerobic, Base Sequence, Cloning, Molecular, Clostridium, Molecular Sequence Data, Multienzyme Complexes, NADH, NADPH Oxidoreductases, Oxygen, Oxygen Consumption, Peptide Fragments, RNA, Bacterial, Polymerase Chain Reaction, Sequence Alignment, Sequence Homology, Amino Acid, DNA Primers, Clostridium acetobutylicum

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review