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Record W1979187940 · doi:10.1002/psc.1289

Nanopore analysis of tethered peptides

2010· article· en· W1979187940 on OpenAlex
Howard Meng, Dielle Detillieux, Christian Baran, Besnik Krasniqi, Christopher Christensen, Claudia Madampage, Radu I. Stefureac, Jeremy S. Lee

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueJournal of Peptide Science · 2010
Typearticle
Languageen
FieldEngineering
TopicNanopore and Nanochannel Transport Studies
Canadian institutionsUniversity of Saskatchewan
FundersNatural Sciences and Engineering Research Council of CanadaMinistry of Agriculture - Saskatchewan
KeywordsPeptideNanoporeChemistryIntercalation (chemistry)MoleculeBiophysicsCysteineStereochemistryNanotechnologyBiochemistryMaterials scienceBiologyOrganic chemistry

Abstract

fetched live from OpenAlex

Peptides of 12 amino acids were tethered via a terminal cysteine to mono-, di-, tri-, and tetrabromomethyl-substituted benzene to produce bundles of one to four peptide strands (CY12-T1 to CY12-T4, respectively). The interaction of the bundles with the α-hemolysin pore was assessed by measuring the blockade currents (I) and times (T) at an applied potential of - 50, - 100, and - 150 mV. Three types of events could be distinguished: bumping events, with small I and short T where the molecule transiently interacts with the pore before diffusing away; translocation events, where the molecule threads through the pore with large I and the value of T decreases with increasing voltage; and intercalation events, where the molecule transiently enters the pore but does not translocate with large I and the value of T increases with increasing voltage. CY12-T1 and CY12-T2 gave only bumping and translocation events; CY12-T3 and CY12-T4 also gave intercalation events, some of which were of very long duration. The results suggest that three uncoiled peptide strands cannot simultaneously thread through the α-hemolysin pore and that proteins must completely unfold in order to translocate.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.250
Threshold uncertainty score0.327

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.002
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.006
GPT teacher head0.227
Teacher spread0.221 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it