Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 278

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.

Superoxide dismutases from a blue-green alga, Plectonema boryanum.

Open access
Asada, K, Yoshikawa, K, Takahashi, M, Maeda, Y, Enmanji, K·1975·Journal of Biological Chemistry

Abstract

Iron-containing and manganese-containing superoxide dismutases were found in Plectonema boryanum. The Mn-enzyme occupies about 10% of total activity. The Fe-enzyme was purified to near homogeneity. It contains 2 atoms of iron per mol. Its molecular weight is 41,700 and it is composed of two subunits of identical molecular weight without disulfide linkage. Amino acid composition is presented. Electron paramagnetic resonance spectrum revealed that iron occurs in a high spin ferric form and in some anisotropic environment. The absorption spectrum and the absence of acid-labile enzymes are insensitive to cyanide. Although the Fe-enzyme is sensitive to hydrogen peroxide, the Mn-enzyme is not.

Overview

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 · 10.1016/s0021-9258(19)41561-5

Cites

36 of 36 references verified0 citation errors · 0 not checkable

Statistics

Verification

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

Self-check

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

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

Citations

Cites

Show all 36 references

Cited by

See all 278

Metadata

Authors
Asada, K., Yoshikawa, K., Takahashi, M., Maeda, Y., & Enmanji, K.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1975-04
Volume
250
Issue
8
Pages
2801-2807
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1533514289
Cited by
278
References
36
FWCI
12.71
Type
journal article
Language
en
Open access
hybrid

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

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Superoxide dismutases from a blue-green alga, Plectonema boryanum. https://app.cochat.ai/papers/10.1016/s0021-9258(19)41561-5
The paper
Asada, K., Yoshikawa, K., Takahashi, M., Maeda, Y., & Enmanji, K. (1975). Superoxide dismutases from a blue-green alga, Plectonema boryanum. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(19)41561-5

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.