Evidence map›Paper›PMID 27849600›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2016

Mapping membrane activity in undiscovered peptide sequence space using machine learning.

Ernest Y Lee, Benjamin M Fulan, Gerard C L Wong, Andrew L Ferguson

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
11.5field-weighted citation impact, top 1% 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

78 citing papers in PubMed, 182 citations in OpenAlex.

  1. Artificial intelligence catalyzes antimicrobial peptide design.Synthetic and systems biotechnology · 2027
    Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. SARS-CoV-2 peptide fragments selectively dysregulate specific immune cell populations via Gaussian curvature targeting.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  8. Article
  9. Article
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  11. Biosourced Functional Hydroxybenzoate-Journal of the American Chemical Society · 2025
    Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Novel technologies uncover novel 'anti'-microbial peptides inPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Article

18 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

4 authors at 2 institutions in 1 country.

Ernest Y LeeDepartment of Bioengineering, University of California, Los Angeles, CA 90095.ORCID 0000-0001-5144-2552
Benjamin M FulanDepartment of Mathematics, University of Illinois at Urbana-Champaign, Urbana, IL 61801.
Gerard C L WongDepartment of Bioengineering, University of California, Los Angeles, CA 90095; gclwong@seas.ucla.edu alf@illinois.edu.
Andrew L FergusonDepartment of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801; gclwong@seas.ucla.edu alf@illinois.edu.ORCID 0000-0002-8829-9726
University of California, Los Angeles · USUniversity of Illinois Urbana-Champaign · US

Funding

UCLA-Caltech Medical Scientist Training ProgramT32GM008042 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI AJIJOLA, OLUJIMI A, DAWSON, DAVID WAYNE · 1985 to 2023
$29.9M
Systems in Integrative BiologyT32GM008185 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI CHOU, TOM · 1987 to 2022
$4.6M
Glyco-therapeutics for Treating Persistent S. aureus Infections of Skin and Soft TissueR21AI122212 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KASKO, ANDREA MARIE, WONG, GERARD C · 2016 to 2017
$399k
NIAID NIH HHS R21 AI122212NIGMS NIH HHS T32 GM008042NIGMS NIH HHS T32 GM008185
6 · The paper itself

Abstract

There are some ∼1,100 known antimicrobial peptides (AMPs), which permeabilize microbial membranes but have diverse sequences. Here, we develop a support vector machine (SVM)-based classifier to investigate ⍺-helical AMPs and the interrelated nature of their functional commonality and sequence homology. SVM is used to search the undiscovered peptide sequence space and identify Pareto-optimal candidates that simultaneously maximize the distance σ from the SVM hyperplane (thus maximize its "antimicrobialness") and its ⍺-helicity, but minimize mutational distance to known AMPs. By calibrating SVM machine learning results with killing assays and small-angle X-ray scattering (SAXS), we find that the SVM metric σ correlates not with a peptide's minimum inhibitory concentration (MIC), but rather its ability to generate negative Gaussian membrane curvature. This surprising result provides a topological basis for membrane activity common to AMPs. Moreover, we highlight an important distinction between the maximal recognizability of a sequence to a trained AMP classifier (its ability to generate membrane curvature) and its maximal antimicrobial efficacy. As mutational distances are increased from known AMPs, we find AMP-like sequences that are increasingly difficult for nature to discover via simple mutation. Using the sequence map as a discovery tool, we find a unexpectedly diverse taxonomy of sequences that are just as membrane-active as known AMPs, but with a broad range of primary functions distinct from AMP functions, including endogenous neuropeptides, viral fusion proteins, topogenic peptides, and amyloids. The SVM classifier is useful as a general detector of membrane activity in peptide sequences.

Indexed as

Amino Acid SequenceAnti-Bacterial AgentsAnti-Infective AgentsAntimicrobial Cationic PeptidesCell MembraneMachine LearningMicrobial Sensitivity TestsModels, TheoreticalPeptidesSupport Vector MachineX-Ray DiffractionAnti-Bacterial AgentsAnti-Infective AgentsAntimicrobial Cationic PeptidesPeptidesantimicrobial peptidescell-penetrating peptidesmachine learningmembrane curvaturemembrane permeation

Identifiers

PMID27849600
PMCPMC5137689
OpenAlexW2555630365

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.