Microbiology

Aeromonas hydrophila CobQ is a new type of NAD+- and Zn2+-independent protein lysine deacetylase

1. Yuqian Wang
2. Guibin Wang
3. Lishan Zhang
4. Qilan Cai
5. Meizhen Lin
6. Dongping Huang
7. Yuyue Xie
8. Wenxiong Lin
9. Xiangmin Lin

• Curated by eLife

  eLife Assessment

  In this valuable study, the authors studied a novel Zn2+- and NAD+-independent KDAC protein, AhCobQ, in Aeromonas hydrophila, which lacks homology with eukaryotic counterparts, thus underscoring its unique evolutionary trajectory within the bacterial domain. They attempt to demonstrate deacetylase activity, however, whilst the revised manuscript has been improved, significant aspects of the data are still incomplete and require further refinement. The work will be of interest to microbiologists studying metabolism and post-translational modifications.

Reviewed by eLife

MftG is crucial for ethanol metabolism of mycobacteria by linking mycofactocin oxidation to respiration

1. Ana Patrícia Graça
2. Vadim Nikitushkin
3. Mark Ellerhorst
4. Cláudia Vilhena
5. Tilman E Klassert
6. Andreas Starick
7. Malte Siemers
8. Walid K Al-Jammal
9. Ivan Vilotijevic
10. Hortense Slevogt
11. Kai Papenfort
12. Gerald Lackner

• Curated by eLife

  eLife Assessment

  Graca et al. reports a fundamental missing link in the ethanol metabolism of mycobacteria and illuminates the role of a flavoprotein dehydrogenase that acts as an electron shuttle between an uncommon redox cofactor and the electron transport chain. Overall, the data presented are compelling, supported by a range of well designed and meticulous experiments. The findings will be of broad interest to researchers investigating bacterial metabolism.

Reviewed by eLife

Coordinated regulation of chemotaxis and resistance to copper by CsoR in Pseudomonas putida

1. Meina He
2. Yongxin Tao
3. Kexin Mu
4. Haoqi Feng
5. Ying Fan
6. Tong Liu
7. Qiaoyun Huang
8. Yujie Xiao
9. Wenli Chen

• Curated by eLife

  eLife Assessment

  Data presented in this useful report suggest a potentially new model for chemotaxis regulation in the gram-negative bacterium P. putida. Data supporting interactions between CheA and the copper-binding protein CsoR, reveal potential mechanisms for coordinating chemotaxis and copper resistance. There was, however, concern about the large number of CheA interactors identified in the initial screen and it was felt that the study was incomplete without a substantial number of additional experiments to test the model and bolster the authors' conclusions.

Reviewed by eLife

Validation of DXS as an attractive drug target in mycobacteria

1. T Maila
2. M Nicolaai
3. R.D Mbau
4. G.T.M Mashabela

Reviewed by Rapid Reviews Infectious Diseases

Persistent cross-species transmission systems dominate Shiga toxin-producing Escherichia coli O157:H7 epidemiology in a high incidence region: A genomic epidemiology study

1. Gillian AM Tarr
2. Linda Chui
3. Kim Stanford
4. Emmanuel W Bumunang
5. Rahat Zaheer
6. Vincent Li
7. Stephen B Freedman
8. Chad R Laing
9. Tim A McAllister

• Curated by eLife

  eLife Assessment

  This valuable study revealed numerous distinct lineages that evolved within a local human population in Alberta, Canada, leading to persistent cases of E. coli O157:H7 infections for over a decade and highlighting the ongoing involvement of local cattle in disease transmission, as well as the possibility of intermediate hosts and environmental reservoirs. This study also showed a shift towards more virulent stx2a-only strains becoming predominant in the local lineages. The evidence supporting the role played by cattle in the transmission system of human cases of E. coli O157:H7 in Alberta is solid.

Reviewed by eLife

A secreted helminth microRNA suppresses gastrointestinal cell differentiation required for innate immunity

1. Matias G. Perez
2. Victoria Gillan
3. William M. Anderson
4. François Gerbe
5. Fabien Herbert
6. Tom N. McNeilly
7. Rick M. Maizels
8. Philippe Jay
9. Eileen Devaney
10. Collette Britton

Reviewed by Arcadia Science

Viro3D: a comprehensive database of virus protein structure predictions

1. Ulad Litvin
2. Spyros Lytras
3. Alexander Jack
4. David L Robertson
5. Joe Grove
6. Joseph Hughes

Reviewed by Arcadia Science

Altering the redox status of Chlamydia trachomatis directly impacts its developmental cycle progression

1. Vandana Singh
2. Scot P Ouellette

• Curated by eLife

  eLife Assessment

  In this valuable study, the authors propose a model wherein the bacterial redox state plays a crucial role in the differentiation of Chlamydia trachomatis into elementary and reticulate bodies. They provide solid evidence to argue that a highly oxidising environment favours the formation of elementary bodies while a reducing condition slows down development. Overall, the study convincingly demonstrates that Chlamydial redox states play a role in differentiation, an observation that may have implications for the study of other bacterial systems.

Reviewed by eLife

Immunogenicity and safety of a live-attenuated SARS-CoV-2 vaccine candidate based on multiple attenuation mechanisms

1. Mie Suzuki Okutani
2. Shinya Okamura
3. Tang Gis
4. Hitomi Sasaki
5. Suni Lee
6. Akiho Kashiwabara
7. Simon Goto
8. Mai Matsumoto
9. Mayuko Yamawaki
10. Toshiaki Miyazaki
11. Tatsuya Nakagawa
12. Masahito Ikawa
13. Wataru Kamitani
14. Shiro Takekawa
15. Koichi Yamanishi
16. Hirotaka Ebina

• Curated by eLife

  eLife Assessment

  This is a valuable study on the efficacy of a live attenuated vaccine that was tested in different animal models and the evidence is convincing. The study has been strengthened after revisions.

Reviewed by eLife

Maintenance of cell wall remodeling and vesicle production are connected in Mycobacterium tuberculosis

1. Vivian C Salgueiro-Toledo
2. Jorge Bertol
3. Claude Gutierrez
4. Jose L Serrano-Mestre
5. Noelia Ferrer-Luzon
6. Lucia Vázquez-Iniesta
7. Ainhoa Palacios
8. Laia Pasquina-Lemonche
9. Akbar Espaillat
10. Laura Lerma
11. Brian Weinrick
12. Jose L Lavin
13. Felix Elortza
14. Mikel Azkargorta
15. Alicia Prieto
16. Pilar Buendía-Nacarino
17. Jose L Luque-García
18. Olivier Neyrolles
19. Felipe Cava
20. Jamie K Hobbs
21. Joaquín Sanz
22. Rafael Prados-Rosales

• Curated by eLife

  eLife Assessment

  In this important study, the authors investigate the biogenesis of extracellular vesicles in mycobacteria and provide several observations to link VirR with vesiculogenesis, peptidoglycan metabolism, lipid metabolism, and cell wall permeability. The authors have done a commendable job of comprehensively examining the phenotypes associated with the VirR mutant using various techniques. The evidence presented in the revised manuscript is convincing and creates several avenues for further research.

Reviewed by eLife