Evidence map›Paper›PMID 11316870›Full record

ArticleProtein science : a publication of the Protein Society2001

Crystal structure of E. coli beta-carbonic anhydrase, an enzyme with an unusual pH-dependent activity.

J D Cronk, J A Endrizzi, M R Cronk, J W O'neill, K Y Zhang

Open access · bronzeAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
1.7field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

50 citing papers in PubMed, 155 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Serendipitous high-resolution structure of Escherichia coli carbonic anhydrase 2.Acta crystallographica. Section F, Structural biology communications · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Investigation of the presence of Capnophilic bacteria in routine urine cultures.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2023
    Article
  9. Review
  10. The gram-negative bacteriumJournal of enzyme inhibition and medicinal chemistry · 2022
    Article
  11. Activation studies with amino acids and amines of a β-carbonic anhydrase fromJournal of enzyme inhibition and medicinal chemistry · 2022
    Article
  12. Article
  13. Article
  14. Review
  15. Biochemical and structural characterisation of a protozoan beta-carbonic anhydrase fromJournal of enzyme inhibition and medicinal chemistry · 2020
    Article
  16. Journal of enzyme inhibition and medicinal chemistry · 2020
    Article
  17. Activation studies of the β-carbonic anhydrases fromJournal of enzyme inhibition and medicinal chemistry · 2020
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

J D CronkDivision of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109-1024, USA.
J A Endrizzi
M R Cronk
J W O'neill
K Y Zhang
Fred Hutch Cancer Center · USUniversity of California, Berkeley · US

Funding

TRAINING IN MOLECULAR AND CELLULAR BIOLOGYT32GM007270 · NIGMS · UNIVERSITY OF WASHINGTON · PI RAIBLE, DAVID W · 1985 to 2020
$21.0M
NIGMS NIH HHS T32 GM007270NIGMS NIH HHS T32 GM07270
6 · The paper itself

Abstract

Carbonic anhydrases fall into three distinct evolutionary and structural classes: alpha, beta, and gamma. The beta-class carbonic anhydrases (beta-CAs) are widely distributed among higher plants, simple eukaryotes, eubacteria, and archaea. We have determined the crystal structure of ECCA, a beta-CA from Escherichia coli, to a resolution of 2.0 A. In agreement with the structure of the beta-CA from the chloroplast of the red alga Porphyridium purpureum, the active-site zinc in ECCA is tetrahedrally coordinated by the side chains of four conserved residues. These results confirm the observation of a unique pattern of zinc ligation in at least some beta-CAS: The absence of a water molecule in the inner coordination sphere is inconsistent with known mechanisms of CA activity. ECCA activity is highly pH-dependent in the physiological range, and its expression in yeast complements an oxygen-sensitive phenotype displayed by a beta-CA-deletion strain. The structural and biochemical characterizations of ECCA presented here and the comparisons with other beta-CA structures suggest that ECCA can adopt two distinct conformations displaying widely divergent catalytic rates.

Indexed as

Amino Acid SequenceBinding SitesCarbonic AnhydrasesCrystallography, X-RayEscherichia coliGene DeletionGenetic Complementation TestHydrogen-Ion ConcentrationModels, MolecularMolecular Sequence DataProtein FoldingProtein Structure, QuaternaryProtein Structure, SecondarySaccharomyces cerevisiaeStructure-Activity RelationshipZincCarbonic AnhydrasesZinc

Identifiers

PMID11316870
PMCPMC2374203
OpenAlexW2057327357

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.