Evidence map›Paper›PMID 19181808›Full record

ArticleJournal of bacteriology2009

Roles of germination-specific lytic enzymes CwlJ and SleB in Bacillus anthracis.

Jared D Heffron, Benjamin Orsburn, David L Popham

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

28 citing papers in PubMed, 51 citations in OpenAlex.

  1. Article
  2. Structural and functional analysis ofMicrobiology (Reading, England) · 2025
    Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Lytic transglycosylases: concinnity in concision of the bacterial cell wall.Critical reviews in biochemistry and molecular biology · 2017
    Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Bacterial cell-wall recycling.Annals of the New York Academy of Sciences · 2013
    Review
  19. Article
  20. Article
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

3 authors at 1 institution in 1 country.

Jared D HeffronDepartment of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, USA.
Benjamin Orsburn
David L Popham
Virginia Tech · US

Funding

SPORE PEPTIDOGLYCAN DEGRADATION IN BACILLUS ANTHRACISR21AI060726 · NIAID · VIRGINIA POLYTECHNIC INST AND ST UNIV · PI POPHAM, DAVID L · 2004 to 2005
$492k
NIAID NIH HHS AI060726NIAID NIH HHS R21 AI060726
6 · The paper itself

Abstract

The structural characteristics of a spore enable it to withstand stresses that typically kill a vegetative cell. Spores remain dormant until small molecule signals induce them to germinate into vegetative bacilli. Germination requires degradation of the thick cortical peptidoglycan by germination-specific lytic enzymes (GSLEs). Bacillus anthracis has four putative GSLEs, based upon sequence similarities with enzymes in other species: SleB, CwlJ1, CwlJ2, and SleL. In this study, the roles of SleB, CwlJ1, and CwlJ2 were examined. The expression levels of all three genes peak 3.5 h into sporulation. Genetic analysis revealed that, similar to other known GSLEs, none of these gene products are individually required for growth, sporulation, or triggering of germination. However, later germination events are affected in spores lacking CwlJ1 or SleB. Compared to the wild type, germinating spores without CwlJ1 suffer a delay in optical density loss and cortex peptidoglycan release. The absence of SleB also causes a delay in cortex fragment release. A double mutant lacking both SleB and CwlJ1 is completely blocked in cortex hydrolysis and progresses through outgrowth to produce colonies at a frequency 1,000-fold lower than that of the wild-type strain. A null mutation eliminating CwlJ2 has no effect on germination. High-performance liquid chromatography and mass spectroscopy analysis revealed that SleB is required for lytic transglycosylase activity. CwlJ1 also clearly participates in cortex hydrolysis, but its specific mode of action remains unclear. Understanding the lytic germination activities that naturally diminish spore resistance can lead to methods for prematurely inducing them, thus simplifying the process of treating contaminated sites.

Indexed as

AmidohydrolasesBacillus anthracisBacterial ProteinsCell WallHydrolasesHydrolysisMass SpectrometrySpores, BacterialAmidohydrolasesBacterial ProteinsHydrolasesSleB protein, Bacillus

Identifiers

PMID19181808
PMCPMC2655533
OpenAlexW2171219873

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.