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 accessAbstract
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.
Integrity signals
Registry
Cites
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.
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
PROTEIN MEASUREMENT WITH THE FOLIN PHENOL REAGENT
Lowry, O., Rosebrough, N., Farr, A. L., & Randall, R. (1951) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(19)52451-6 · Cited by 317,331
Ellman, G. L. (1959) · Archives of Biochemistry and Biophysics · doi:10.1016/0003-9861(59)90090-6 · Cited by 26,311
McCord, J. M., & Fridovich, I. (1969) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(18)63504-5 · Cited by 12,952
Spectroscopic Determination of Tryptophan and Tyrosine in Proteins*
Edelhoch, H. (1967) · Biochemistry · doi:10.1021/bi00859a010 · Cited by 3,436
Equilibrium Ultracentrifugation of Dilute Solutions*
Yphantis, D. A. (1964) · Biochemistry · doi:10.1021/bi00891a003 · Cited by 3,384
On the Determination of Cystine as Cysteic Acid
Moore, S. (1963) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(19)83985-6 · Cited by 3,012
Proteins, amino acids and peptides
Oppermann, R. H. (1943) · Journal of the Franklin Institute · doi:10.1016/s0016-0032(43)91372-9 · Cited by 2,168
Spectrophotometric Study of the Reaction of Protein Sulfhydryl Groups with Organic Mercurials
Boyer, P. D. (1954) · Journal of the American Chemical Society · doi:10.1021/ja01646a025 · Cited by 1,667
Mitochondrial Superoxide Dismutase
Weisiger, R. A., & Fridovich, I. (1973) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(19)43735-6 · Cited by 958
Weisiger, R. A., & Fridovich, I. (1973) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(19)43969-0 · Cited by 895
Cited by
Superoxide radical and superoxide dismutases
Fridovich, I. (1995) · Annual Review of Biochemistry · doi:10.1146/annurev.bi.64.070195.000525 · Cited by 3,455
Biotechnological approach of improving plant salt tolerance using antioxidants as markers
Ashraf, M. (2009) · Biotechnology Advances · doi:10.1016/j.biotechadv.2008.09.003 · Cited by 1,137
Superoxide dismutases and superoxide reductases
Sheng, Y., Abreu, I. A., Cabelli, D. E., Maroney, M. J., Miller, A.-F., Teixeira, M., & Valentine, J. S. (2014) · Chemical Reviews · doi:10.1021/cr4005296 · Cited by 1,081
Lavelle, F., McAdam, M. E., Fielden, E. M., Roberts, P. B., Puget, K., & Michelson, M. (1977) · Biochemical Journal · doi:10.1042/bj1610003 · Cited by 94
Valderas, M. W., & Hart, M. E. (2001) · Journal of Bacteriology · doi:10.1128/jb.183.11.3399-3407.2001 · Cited by 77
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.