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Record W1124372794 · doi:10.1128/9781555818395.ch4

Host Receptors of Bacterial Origin

2014· book-chapter· en· W1124372794 on OpenAlex

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.

Bibliographic record

VenueASM Press eBooks · 2014
Typebook-chapter
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicEscherichia coli research studies
Canadian institutionsUniversity of British Columbia
Fundersnot available
KeywordsIntiminBiologyBacterial adhesinMicrobiologyBacterial outer membraneReceptorPathogenicity islandOperonBacteriaEscherichia coliEnteropathogenic Escherichia coliGeneticsCell biologyGeneEnterobacteriaceae

Abstract

fetched live from OpenAlex

This chapter illustrates how specific pathogenic bacteria participate in a sophisticated cross talk with their host by highlighting recent advances in the understanding of the structure and function of the first identified host receptor of bacterial origin—the translocated intimin receptor (Tir) from enteropathogenic Escherichia coli (EPEC) and its cognate adhesin intimin. EPEC, an extracellular bacterial pathogen which infects humans by colonizing the intestinal mucosa, is a major cause of infantile diarrhea in developing countries and continues to be a major health threat worldwide. The locus of enterocyte effacement (LEE)5/Tir operon contains three important genes directly involved in the intimate attachment of bacteria to host: eae, which encodes the outer membrane adhesion molecule known as intimin; tir, which encodes the translocated intimin receptor (Tir); and cesT, which encodes the type III chaperone of Tir. Recent structural and biochemical studies have provided further insights into the molecular details of the Tir-intimin interaction with respect to intimate attachment; and this chapter reviews some of these aspects. Since the discovery of EPEC Tir, bacterially derived receptors have been identified only in the attaching and effacing (A/E) family of pathogens, and all of them are Tir orthologues. It is still puzzling why similar types of receptors have not been identified in other bacterial pathogens. The chapter speculates that a number of reasons contribute to the difficulty in identifying other receptors of bacterial origin.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.823
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

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 integrity0.0000.000
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 head0.028
GPT teacher head0.273
Teacher spread0.245 · 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