Evidence map›Paper›PMID 23382230›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2013

Intrinsic evolutionary constraints on protease structure, enzyme acylation, and the identity of the catalytic triad.

Andrew R Buller, Craig A Townsend

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
–field-weighted citation impact
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

71 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Language models reveal a complex sequence basis for adaptive convergent evolution of protein functions.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Article
  7. Computational design of serine hydrolases.Science (New York, N.Y.) · 2025
    Article
  8. Article
  9. Article
  10. Advances in the Search for SARS-CoV-2 MPathogens (Basel, Switzerland) · 2024
    Review
  11. Computational design of serine hydrolases.bioRxiv : the preprint server for biology · 2024
    Article
  12. Article
  13. Review
  14. Article
  15. The PNPLA family of enzymes: characterisation and biological role.Arhiv za higijenu rada i toksikologiju · 2023
    Article
  16. Review
  17. Article
  18. The Nϵ-Rule for Serine, but Not Cysteine Catalytic Triads.Angewandte Chemie (International ed. in English) · 2022
    Article
  19. Article
  20. Article

11 more citing papers are in PubMed but not listed here.

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

2 authors.

Andrew R BullerDepartment of Biophysics, The Johns Hopkins University, Baltimore, MD 21218, USA.
Craig A Townsend

Funding

Biosynthesis of Beta-Lactam AntibioticsR37AI014937 · NIAID · JOHNS HOPKINS UNIVERSITY · PI TOWNSEND, CRAIG ARTHUR · 2004 to 2013
$5.2M
B LACTAM AND AMINO ACID DERIVED ANTIBIOTIC BIOSYNTHESISR01AI014937 · NIAID · JOHNS HOPKINS UNIVERSITY · PI TOWNSEND, CRAIG A · 1985 to 2003
$1.5M
NIAID NIH HHS R01 AI014937NIAID NIH HHS R37 AI014937
6 · The paper itself

Abstract

The study of proteolysis lies at the heart of our understanding of biocatalysis, enzyme evolution, and drug development. To understand the degree of natural variation in protease active sites, we systematically evaluated simple active site features from all serine, cysteine and threonine proteases of independent lineage. This convergent evolutionary analysis revealed several interrelated and previously unrecognized relationships. The reactive rotamer of the nucleophile determines which neighboring amide can be used in the local oxyanion hole. Each rotamer-oxyanion hole combination limits the location of the moiety facilitating proton transfer and, combined together, fixes the stereochemistry of catalysis. All proteases that use an acyl-enzyme mechanism naturally divide into two classes according to which face of the peptide substrate is attacked during catalysis. We show that each class is subject to unique structural constraints that have governed the convergent evolution of enzyme structure. Using this framework, we show that the γ-methyl of Thr causes an intrinsic steric clash that precludes its use as the nucleophile in the traditional catalytic triad. This constraint is released upon autoproteolysis and we propose a molecular basis for the increased enzymatic efficiency introduced by the γ-methyl of Thr. Finally, we identify several classes of natural products whose mode of action is sensitive to the division according to the face of attack identified here. This analysis of protease structure and function unifies 50 y of biocatalysis research, providing a framework for the continued study of enzyme evolution and the development of inhibitors with increased selectivity.

Indexed as

Biological EvolutionAcylationBiocatalysisEnzyme InhibitorsModels, MolecularPeptide HydrolasesProteolysisProtonsEnzyme InhibitorsPeptide HydrolasesProtons

Identifiers

PMID23382230
PMCPMC3581919

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.