Biochemistry

Inherited CDA-I disease: anemia-associated mutations disrupt CDIN1-Codanin1 complex

1. Martin Stojaspal
2. Tomáš Brom
3. Ivona Nečasová
4. Tomáš Janovič
5. Pavel Veverka
6. Naina Verma
7. Lukáš Uhrík
8. Lenka Hernychova
9. Ctirad Hofr

Reviewed by Review Commons

Amyloid-β fibrils accumulated in preeclamptic placentas suppress syncytialization of cytotrophoblasts

1. Kaho Nishioka
2. Midori Ikezaki
3. Naoyuki Iwahashi
4. Miyu Arakawa
5. Momo Fukushima
6. Noa Mori
7. Mika Mizoguchi
8. Yuko Horiuchi-Tanizaki
9. Megumi Fujino
10. Takami Tomiyama
11. Yoshito Ihara
12. Kenji Uchimura
13. Kazuhiko Ino
14. Kazuchika Nishitsuji

Reviewed by Review Commons

A high-resolution analysis of arrestin2 interactions responsible for CCR5 endocytosis

1. Ivana Petrovic
2. Samit Desai
3. Polina Isaikina
4. Layara Akemi Abiko
5. Anne Spang
6. Stephan Grzesiek

• Curated by eLife

  eLife Assessment

  The authors investigate arrestin2-mediated CCR5 endocytosis in the context of clathrin and AP2 contributions. Using an extensive set of NMR experiments, and supported by microscopy and other biophysical assays, the authors provide convincing data on the roles of AP2 and clathrin in CCR5 endocytosis. This important work will appeal to an audience beyond those studying chemokine receptors, including those studying GPCR regulation and trafficking. The distinct role of AP2 and not clathrin will be of particular interest to those studying GPCR internalization mechanisms.

Reviewed by eLife

Occupancy of the HbYX hydrophobic pocket is sufficient to induce gate opening in the archaeal 20S proteasomes

1. Janelle JY Chuah
2. Madalena R Daugherty
3. David M Smith

• Curated by eLife

  eLife Assessment

  This valuable manuscript describes cryo-EM structures of archaeal proteasomes that reveal insights into how occupancy of binding pockets on the 20S proteasome regulates proteasome gating. The evidence supporting these claims is convincing, although the extrapolation of these findings to the more complex eukaryotic proteasome may prove challenging. This work will be of high interest to researchers interested in proteasome structure and regulation.

Reviewed by eLife

Rac1 Selectively Binds a Specific Lamellipodin Isoform via a Noncanonical Helical Interface

1. Tong Gao
2. Pingfeng Zhang
3. Alison M. Kurimchak
4. James S. Duncan
5. Jinhua Wu

Reviewed by Arcadia Science

Erythrocytosis-inducing PHD2 mutations implicate biological role for N-terminal prolyl-hydroxylation in HIF1α oxygen-dependent degradation domain

1. Cassandra C Taber
2. Wenguang He
3. Geneviève MC Gasmi-Seabrook
4. Mia Hubert
5. Fraser G Ferens
6. Mitsuhiko Ikura
7. Jeffery E Lee
8. Michael Ohh

• Curated by eLife

  eLife Assessment

  In this valuable study, Taber et al used a battery of biophysical and structural approaches to characterize the impact of erythrocytosis-related mutations in prolyl hydroxylase domain protein 2 (PHD2). The authors show that PHD2 mutant proteins are destabilized, thus supporting the tenet that dysregulation of PHD2/hypoxia induced factor (HIF) axis underpins erythrocytosis, while providing incomplete evidence that N-terminal ODD prolyl hydroxylation of HIF is indispensable for these phenotypes. Notwithstanding that this study was found to be of broad interest for a variety of fields focusing on oxygen sensing in homeostasis and pathological states, resolving inconsistencies in the biophysical analysis (e.g., NMR, SEC, and BLI/MST) was thought to be warranted to further corroborate the proposed model.

Reviewed by eLife

Engineering NIR-Sighted Bacteria

1. Stefanie SM Meier
2. Michael Hörzing
3. Cornelia Böhm
4. Emma LR Düthorn
5. Heikki Takala
6. René Uebe
7. Andreas Möglich

• Curated by eLife

  eLife Assessment

  This study establishes bathy phytochromes, a unique class of bacterial photoreceptors that respond to near-infrared light (NIR), as important tools for bacterial optogenetics. NIR light is a key control signal in optogenetics due to its deep tissue penetration and the ability to combine with existing red- and blue-light sensitive systems, but thus far, NIR-activated proteins have been poorly characterized. The strength of the evidence is solid overall, with comprehensive in vitro characterization, modular design strategies, and validation across different hosts. There are some questions that remain – such as the rationale for linker choices, characterization of growth and performance relative to controls, and the physiological significance of color blind effects at alkaline pH – but overall, this study should advance the fields of optogenetics and photobiology and inspire future work.

Reviewed by eLife

The temperature dependence of binding entropy is a selective pressure in protein evolution

1. Rosemary Georgelin
2. Hannah Bott
3. Joe A. Kaczmarski
4. Rebecca Frkic
5. Li Lynn Tan
6. Nobuhiko Tokuriki
7. Matthew A. Spence
8. Colin J. Jackson

Reviewed by PREreview

Categorizing prediction modes within low-pLDDT regions of AlphaFold2 structures

1. Christopher J Williams
2. Vincent B Chen
3. David C Richardson
4. Jane S Richardson

Reviewed by Arcadia Science

Phage-displayed synthetic library and screening platform for nanobody discovery

1. Baolong Xia
2. Ah-Ram Kim
3. Feimei Liu
4. Myeonghoon Han
5. Emily Stoneburner
6. Stephanie Makdissi
7. Francesca Di Cara
8. Stephanie E Mohr
9. Aaron M Ring
10. Norbert Perrimon

• Curated by eLife

  eLife Assessment

  This important study presents an alternative platform for nanobody discovery using phage-displayed synthetic libraries. The evidence supporting the platform, which is used to isolate and validate nanobodies targeting Drosophila secreted proteins, is compelling. By making the library openly accessible, this provides an excellent resource to the wider scientific community. The paper presents a detailed protocol for nanobody screening; as this protocol is refined and optimized over time, this will increase the success rate for discovering nanobodies with improved properties using this alternative platform.

Reviewed by eLife