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Cited by 403

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Crystal structure of bovine Cu,Zn superoxide dismutase at 3 A resolution: chain tracing and metal ligands.

Open access
Richardson, J, Thomas, K A, Rubin, B H, Richardson, D C·1975·Proceedings of the National Academy of Sciences

Abstract

An electron density map at 3 angstrom resolution has been calculated for Cu2+, Zn2+ superoxide dismutase from bovine erythrocytes, and the course of the main chain has been traced. The dominant structural feature is an 8-stranded barrel of antiparallel beta-pleated sheet. There is one very short helical section and two long loops of non-repetitive structure. The Cu and Zn are bound between the loops and one side of the beta barrel and are about 6 Angstrom apart, with a common histidine ligand. The Cu has four histidine ligands in a somewhat distorted square plane, and the Zn has three histidines and an aspartate in approximately tetrahedral arrangement. The two coppers of a dimer are about 34 Angstrom apart. The two subunits have essentially the same conformation and have an extensive contact area that mainly involves hydrophobic side chain interactions. The overall folding pattern of the polypeptide chain is very similar to that of an immunoglobulin domain.

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Metadata

Authors
Richardson, J., Thomas, K. A., Rubin, B. H., & Richardson, D. C.
Venue
Proceedings of the National Academy of Sciences
Published
1975-04
Volume
72
Issue
4
Pages
1349-1353
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2145315612
Cited by
403
References
1
FWCI
30.59
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Crystal structure of bovine Cu,Zn superoxide dismutase at 3 A resolution: chain tracing and metal ligands. https://app.cochat.ai/papers/10.1073/pnas.72.4.1349
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Richardson, J., Thomas, K. A., Rubin, B. H., & Richardson, D. C. (1975). Crystal structure of bovine Cu,Zn superoxide dismutase at 3 A resolution: chain tracing and metal ligands. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.72.4.1349

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