Biochemistry

Identification of the Regulatory Elements and Protein Substrates of Lysine Acetoacetylation

1. Qianyun Fu
2. Terry Nguyen
3. Bhoj Kumar
4. Parastoo Azadi
5. Y George Zheng

• Curated by eLife

  eLife Assessment

  This useful study reports a method to detect and analyze a novel post-translational modification, lysine acetoacetylation (Kacac), finding it regulates protein metabolism pathways. The study unveils epigenetic modifiers involved in placing this mark, including key histone acetyltransferases such as p300, and concomitant HDACs, which remove the mark. Proteomic and bioinformatics analysis identified many human proteins with Kacac sites, potentially suggesting broad effects on cellular processes and disease mechanisms. The data presented are solid and the study will be of interest to those studying protein and metabolic regulation.

Reviewed by eLife

A simplified and highly efficient cell-free protein synthesis system for prokaryotes

1. Xianshengjie Lang
2. Changbin Zhang
3. Jingxuan Lin
4. Zhe Zhang
5. Wenfei Li

• Curated by eLife

  eLife Assessment

  The study presents valuable findings of an optimized E. coli cell-free protein synthesis (eCFPS) system that has been simplified by reducing the number of core components from 35 to 7; furthermore, the findings communicate a simplified 'fast lysate' preparation that eliminates the need for traditional runoff and dialysis steps. This study is an advance towards simplifying protein expression workflows, and the evidence provided is solid, starting with nanoluc, a protein that expresses readily in many systems, to applications to more challenging proteins like the functional self-assembling vimentin and the active restriction endonuclease Bsal. Data on the underlying mechanisms and efficiency of the presented system in terms of protein yield relative to other known cell-free systems would greatly enhance the findings' significance and the strength of the evidence. The paper remains of interest to scientists in microbiology, biotechnology and protein synthesis.

Reviewed by eLife

Cryo-EM structure of the bicarbonate receptor GPR30

1. Shota Kaneda
2. Airi Jo-Watanabe
3. Hiroaki Akasaka
4. Hidetaka S Oshima
5. Takehiko Yokomizo
6. Wataru Shihoya
7. Osamu Nureki

• Curated by eLife

  eLife Assessment

  This study resolves a cryo-EM structure of the GPCR, human GPR30, which responds to bicarbonate and regulates cellular responses to pH and ion homeostasis. Understanding the ligand and the mechanism of activation is important to the field of receptor signaling and potentially facilitates drug development targeting this receptor. Structures and functional assays provide solid evidence for a potential bicarbonate binding site.

Reviewed by eLife

Vitamin B12 supports skeletal muscle oxidative phosphorylation capacity in male mice

1. Luisa F. Castillo
2. Katarina E. Heyden
3. Abigail R. Williamson
4. Wenxia Ma
5. Olga V. Malysheva
6. Nathaniel M. Vacanti
7. Anna E. Thalacker-Mercer
8. Martha S. Field

Reviewed by preLights

Engineered Transdermal Peptide-Recombinant Type III Collagen Hydrogel with Biological Efficacy in Cell Proliferation and Wound Healing

1. Wansen Tan
2. Yue Liu
3. Jingjun Hong

Reviewed by PREreview

RNF13 is a novel interactor of iduronate 2-sulfatase that modifies its glycosylation and maturation

1. Valérie C. Cabana
2. Antoine Y. Bouchard
3. Audrey M. Sénécal
4. Laurent Cappadocia
5. Marc P. Lussier

Reviewed by Arcadia Science

Aspartate transaminases are required for blood development

1. Narges Pourmandi
2. Greggory Myers
3. Arjun Jha
4. Kelsey Temprine
5. Amanda Sankar
6. Nupur K. Das
7. Ridwana Khan
8. Siva Kumar Natarajan
9. Cristina Castillo
10. Peter Sajjakulnukit
11. Noah S. Nelson
12. Matthew D. Perricone
13. Indrani Talukder
14. Aaron D. denDekker
15. Lin Lin
16. Dominik Awad
17. Wesley Huang
18. Lei Yu
19. Navdeep S. Chandel
20. Rami Khoriaty
21. Yatrik M. Shah
22. Costas A. Lyssiotis

Reviewed by preLights

Gut microbe-derived trimethylamine shapes circadian rhythms through the host receptor TAAR5

1. Kala K Mahen
2. William J Massey
3. Danny Orabi
4. Amanda L Brown
5. Thomas C Jaramillo
6. Amy Burrows
7. Anthony J Horak
8. Sumita Dutta
9. Marko Mrdjen
10. Nour Mouannes
11. Venkateshwari Varadharajan
12. Lucas J Osborne
13. Xiayan Ye
14. Dante M Yarbrough
15. Treg Grubb
16. Natalie Zajczenko
17. Rachel Hohe
18. Rakhee Banerjee
19. Pranavi Linga
20. Dev Laungani
21. Adeline M Hajjar
22. Naseer Sangwan
23. Mohammed Dwidar
24. Jennifer A Buffa
25. Garth R Swanson
26. Zeneng Wang
27. Jonathan Mark Brown

• Curated by eLife

  eLife Assessment

  This study presents an important finding linking the bacterial metabolite trimethylamine and its receptor to circadian rhythms and olfaction. The current evidence supporting the claims of the authors is compelling. This work will be of broad interest to researchers interested in nutrition, microbial metabolism, circadian rhythms, and host-microbiome interactions.

Reviewed by eLife

ATP-independent phosphate recycling on AGC kinase activation loops induced by alkali metal ions

1. Koji Kubouchi
2. Hideyuki Mukai

• Curated by eLife

  eLife Assessment

  AGC kinases, such as PKN1, are regulated by activation loop phosphorylation. This paper reports that exposing cells to high concentrations of monovalent cations induces rapid activation loop dephosphorylation, with rapid re-phosphorylation when physiological salt is restored. Re-phosphorylation is apparently independent of ATP or candidate kinases, and the paper presents an extraordinary and unconventional mechanism involving phosphate exchange between the activation loop and an unknown acceptor molecule. The findings are intriguing and the approach is logical, but the evidence is incomplete and the significance unclear until the biochemical mechanism is identified.

Reviewed by eLife

Viral proteins activate PARIS-mediated tRNA degradation and viral tRNAs rescue infection

1. Nathaniel Burman
2. Svetlana Belukhina
3. Florence Depardieu
4. Royce A. Wilkinson
5. Mikhail Skutel
6. Andrew Santiago-Frangos
7. Ava B. Graham
8. Alexei Livenskyi
9. Anna Chechenina
10. Natalia Morozova
11. Trevor Zahl
12. William S. Henriques
13. Murat Buyukyoruk
14. Christophe Rouillon
15. Lena Shyrokova
16. Tatsuaki Kurata
17. Vasili Hauryliuk
18. Konstantin Severinov
19. Justine Groseille
20. Agnès Thierry
21. Romain Koszul
22. Florian Tesson
23. Aude Bernheim
24. David Bikard
25. Blake Wiedenheft
26. Artem Isaev

Reviewed by Rapid Reviews Infectious Diseases