Issues
-
Cover image
Cover Image
Cover: Stress granules (SGs) are liquid–liquid condensates seeded by RNA molecules and structured around ribonucleoprotein (RNP) complexes. They are formed in response to external stress and are sites of translation inhibition to conserve cellular energy. The image depicts an artist's conception of a SG core as a highly concentrated RNP mesh. The core is highly enriched in quiescent RNA that adopts A- and Z-conformations. Domains that recognize the Z-conformation of nucleic acids (Zα), such as those in ADAR1 p150 and DAI protein (shown in golden), translocate to the SGs alongside other RNP complexes. The image has been rendered with opensource PyMol and has made use of PDB structures 1J75, 4B3M and 4IIA. See article by Luisa Gabriel et al. (jcs258446).
- PDF Icon PDF LinkTable of contents
- PDF Icon PDF LinkIssue info
RESEARCH HIGHLIGHTS
FIRST PERSON
CELL SCIENCE AT A GLANCE
The multifunctional spindle midzone in vertebrate cells at a glance
Summary: A discussion of the roles of the spindle midzone, a microtubule-containing structure that connects the two half-spindles during mitosis, contributes to chromosome segregation and specifies the location of cytokinetic furrowing.
HYPOTHESIS
Dynein light intermediate chains as pivotal determinants of dynein multifunctionality
Summary: Spatiotemporally regulated posttranslational modifications of light intermediate chain subunits could modulate the diverse functional spectrum of cytoplasmic dynein through selective adaptor engagement.
REVIEW
Let's get physical – mechanisms of crossover interference
Summary: We survey mechanisms for regulating crossover interference during meiosis, and review how studies of phase separation, DNA repair and pan-nuclear signaling may resolve longstanding mysteries in the field.
SHORT REPORT
Spatial distribution of lamin A/C determines nuclear stiffness and stress-mediated deformation
Summary: The nuclear scaffold protein lamin A/C modulates nuclear stiffness, and heterogeneous lamin A/C density leads to diverse nuclear strain under stress.
RESEARCH ARTICLES
Organelle tethering, pore formation and SNARE compensation in the late endocytic pathway
Highlighted Article: Endocytic delivery to lysosomes by kiss and run/membrane fusion entails pore formation commencing at the edge of tether arrays, and demonstrates SNARE redundancy and compensation.
Self-organized optimal packing of kinesin-5-driven microtubule asters scales with cell size
Highlighted Article: Chemically induced MT asters interacting with kinesin-5 motors spontaneously form optimal packing patterns in vivo. A computational model reproduces the experimental patterns and predicts their scaling.
Integrity of the short arm of the nuclear pore Y-complex is required for mouse embryonic stem cell growth and differentiation
Highlighted Article: Seh1 and Nup43, although dispensable in pluripotent mouse ESCs, are required for normal cell growth, viability upon differentiation and maintenance of proper nuclear pore complex density.
Enrichment of Zα domains at cytoplasmic stress granules is due to their innate ability to bind to nucleic acids
Summary: We identify the interacting partners of the ZαβDAI–RNA complex in vivo and show that their translocation to stress granules is mainly mediated by the nucleic acid-binding ability of the Zα domains.
Identification of a heat-inducible novel nuclear body containing the long noncoding RNA MALAT1
Highlighted Article: The heat shock induces the translocation of long noncoding RNA MALAT1 from nuclear speckles to a heat-inducible noncoding RNA-containing nuclear body (HiNoCo body).
TORC2 inhibition of α-arrestin Aly3 mediates cell surface persistence of S. pombe Ght5 glucose transporter in low glucose
Summary: Nitrogen-dependent localization of S. pombe Ght5 on the cell surface is maintained by TORC2, which inhibits α-arrestin Aly3-dependent ubiquitylation and subsequent vacuolar translocation of Ght5.
Dissecting the PRSS37 interactome and potential mechanisms leading to ADAM3 loss in PRSS37-null sperm
Summary: PRSS37 interactome analysis showed that PRSS37 specifically modulates PDILT and ADAM3 interaction, which is a prerequisite for ADAM3 transport from the endoplasmic reticulum to the germ cell surface.
Hherisomes, Hedgehog specialized recycling endosomes, are required for high level Hedgehog signaling and tissue growth
Summary: Ultrastructural identification of specialized recycling endosomes that contain Hedgehog and sustain physiological Hedgehog activity for patterning and tissue growth in the wing disc.
Hijacking of the host cell Golgi by Plasmodium berghei liver stage parasites
Summary: Recruitment of the host cell Golgi by the parasitophorous vacuolar membrane of Plasmodium berghei is crucial for optimal pre-erythrocytic development. The interaction is accompanied by parasite-induced formation of miniaturized host cell Golgi.
Coordination of mitochondrial and cellular dynamics by the actin-based motor Myo19
Summary: An in-depth cellular and molecular characterization of myosin XIX (Myo19)-deficient cells reveals that different cellular and molecular processes are linked to mitochondrial dynamics regulated by Myo19.
Call for papers - Cilia and Flagella: from Basic Biology to Disease
We are welcoming submissions for our upcoming special issue: Cilia and Flagella: from Basic Biology to Disease. This issue will be coordinated by two Guest Editors: Pleasantine Mill (University of Edinburgh) and Lotte Pedersen (University of Copenhagen). Submission deadline: 1 March 2025.
Biologists @ 100 - join us in Liverpool in March 2025
We are excited to invite you to a unique scientific conference, celebrating the 100-year anniversary of The Company of Biologists, and bringing together our different communities. The conference will incorporate the Spring Meetings of the BSCB and the BSDB, the JEB Symposium Sensory Perception in a Changing World and a DMM programme on antimicrobial resistance. Find out more and register your interest to join us in March 2025 in Liverpool, UK. The deadline for abstract submission and early-bird registration is 17 January 2025.
Fantastic proteins and where to find them – histones, in the nucleus and beyond
In this Review, Johanna Grinat and colleagues provide an evolutionary perspective of histones, nuclear chromatin and extracellular chromatin biology, describing the known extranuclear and extracellular functions of histones.
JCS-FocalPlane Training Grants
Early-career researchers - working in an area covered by JCS - who would like to attend a microscopy training course, please apply. Deadline dates for 2025 applications: 7 March 2025 (decision by week commencing 21 April 2025) and 6 June 2025 (decision by week commencing 28 July 2025).
How to reduce your lab's carbon footprint
All stakeholders – from those working in the lab to those providing funding and infrastructure – have an important role to play to becoming more sustainable. In this Essay, Julie Welburn discusses what lab users can collectively do to transform biomedical research into a discipline that is significantly and positively sustainable.