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Cited by 357

The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.

Crystal structure of Escherichia coli TEM1 β‐lactamase at 1.8 Å resolution

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Jelsch, Christian, Mourey, Lionel, Masson, Jean‐Michel, Samama, Jean‐Pierre·1993·Proteins: Structure, Function, and Bioinformatics

Abstract

The X‐ray structure of Escherichia coli TEM1β‐lactamase has been refined to a crystallorgphic R‐factor of 16.4% for 22,510 reflections between 5.0 and 1.8 Å resolution; 199 water molecules and 1 sulphate ion were included in refinement. Except for the tips of a few solvent‐exposed side chains, all protein atoms have clear electron density and refined to an average atomic temperature factor of 11 Å 2. The estimated coordinates error is 0.17 Å. The substrate binding site is located at the interface of the two domains of the protein and contains 4 water molecules and the sulphate anion. One of these solvent molecules is found at hydrogen bond distance from S70 and E166. S70 and S130 are hydrogen bonded to K73 and K234, respectively. It was found that the E. coli TEM1 and Staphylococcus aureus PC1 β‐lactamases crystal structures differ in the relative orientations of the two domains composing the enzymes, which result in a narrowed substrate binding cavity in the TEM1 enzyme. Local but significant differences in the vicinity of this site may explain the occurrence of TEM1 natural mutants with extended substrate specificities. © 1993 Wiley‐Liss, Inc.

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Metadata

Authors
Jelsch, C., Mourey, L., Masson, J., & Samama, J.
Venue
Proteins: Structure, Function, and Bioinformatics
Publisher
Wiley
Published
1993-08
Volume
16
Issue
4
Pages
364-383
ISSN
  • 0887-3585 (ISSN-L)
  • 1097-0134
OpenAlex
W2147872249
Cited by
357
References
30
FWCI
10.11
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Crystal structure of Escherichia coli TEM1 β‐lactamase at 1.8 Å resolution. https://app.cochat.ai/papers/10.1002/prot.340160406
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Jelsch, C., Mourey, L., Masson, J., & Samama, J. (1993). Crystal structure of Escherichia coli TEM1 β‐lactamase at 1.8 Å resolution. Proteins: Structure, Function, and Bioinformatics. https://doi.org/10.1002/prot.340160406

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