ArticleActa crystallographica. Section F, Structural biology communications2019
Crystal structure of the putative peptide-binding protein AppA from Clostridium difficile.
Article in Acta crystallographica. Section F, Structural biology communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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.
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.
Who cites it
6 citing papers in PubMed.
- An oligopeptide permease, OppABCD, requires an iron-sulfur cluster domain for functionality.Nature structural & molecular biology · 2024Article
- Structure and ligand binding in the putative anti-microbial peptide transporter protein, YejA.Microbiology (Reading, England) · 2024Article
- Biochemical studies highlight determinants for metal selectivity in the Escherichia coli periplasmic solute binding protein NikA.Metallomics : integrated biometal science · 2022Article
- Genetic mechanisms governing sporulation initiation in Clostridioides difficile.Current opinion in microbiology · 2022Review
- The repertoire of ABC proteins inComputational and structural biotechnology journal · 2021Article
- Crystal structures of the GH18 domain of the bifunctional peroxiredoxin-chitinase CotE from Clostridium difficile.Acta crystallographica. Section F, Structural biology communications · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
Peptides play an important signalling role in Bacillus subtilis, where their uptake by one of two ABC-type oligopeptide transporters, Opp and App, is required for efficient sporulation. Homologues of these transporters in Clostridium difficile have been characterized, but their role, and hence that of peptides, in regulating sporulation in this organism is less clear. Here, the oligopeptide-binding receptor proteins for these transporters, CdAppA and CdOppA, have been purified and partially characterized, and the crystal structure of CdAppA has been determined in an open unliganded form. Peptide binding to either protein could not be observed in Thermofluor assays with a set of ten peptides of varying lengths and compositions. Re-examination of the protein sequences together with structure comparisons prompts the proposal that CdAppA is not a versatile peptide-binding protein but instead may bind a restricted set of peptides. Meanwhile, CdOppA is likely to be the receptor protein for a nickel-uptake system.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.