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Record W4242957513 · doi:10.1128/9781555817954.ch20

Transposon Tn<i>10</i>

2007· other· he· W4242957513 on OpenAlexaff
David B. Haniford

Bibliographic record

Venuenot available
Typeother
Languagehe
FieldBiochemistry, Genetics and Molecular Biology
TopicCRISPR and Genetic Engineering
Canadian institutionsWestern University
Fundersnot available
KeywordsTransposable elementTransposition (logic)DNAMutantResolution (logic)StereoselectivityGeneticsStereochemistryInverted repeatChemistryBiologyMolecular biologyBiophysicsGeneBiochemistryGenome

Abstract

fetched live from OpenAlex

This chapter summarizes one's current understanding of the molecular mechanism of Tn 10 /IS 10 transposition and describes how double-strand cleavages are made in other complex systems including V(D)J recombination. Additional information regarding the precise role of integration host factor (IHF) in transpososome assembly has come from experiments conducted with use of the short, linear outside-end fragment assay in which transpososomes are easily detected. A mutational study on a particular insertion hotspot called HisG1 demonstrated that only the first 5 to 6 bp of the flanking sequence influenced target site utilization. Mutants of this class exhibit an altered target specificity (ATS) phenotype. Stereoselectivity was observed for each of the four chemical steps in Tn 10 transposition. First, strand nicking, hairpin formation, hairpin resolution, and target strand transfer exhibited Rp, Sp, Rp, and Rp stereoselectivities, respectively. The stereoselectivity of hairpin resolution (Rp) has only been worked out in the Tn 10 system. Finally, target strand transfer in Mu transposition and HIV integration exhibits Rp-Ps stereoselectivity. From the stereochemical model, predictions for the organization of DNA binding determinants in the active site can be made. In addition, in Tn 10 transposition hairpin resolution must necessarily precede target strand transfer to expose a 3'-OH terminus for joining to the target DNA.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation 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 score0.011
Threshold uncertainty score0.036

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0110.004

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 head0.290
Teacher spread0.284 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations12
Published2007
Admission routes1
Has abstractyes

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Same topicCRISPR and Genetic EngineeringFrench-language works237,207