IN THIS ISSUE
FIRST PERSON
CELL SCIENCE AT A GLANCE
- Targeting and translocation of proteins to the endoplasmic reticulum at a glance
Summary: Targeting and translocation into the ER are mediated by multiple pathways, which together enable the correct localization of about 30% of any eukaryotic proteome.
REVIEW
- The EGFR odyssey – from activation to destruction in space and time
Summary: We review the molecular events that occur during EGFR activation, its trafficking through the endosomal system and its subsequent downregulation.
RESEARCH ARTICLES
- Dynamic changes in the interchromosomal interaction of early histone gene loci during development of sea urchin
Highlighted Article: During the morula stage in sea urchin embryos, early histone gene loci undergo interchromosomal interactions that are dependent on the active transcriptional status.
- Functional analyses of the CIF1–CIF2 complex in trypanosomes identify the structural motifs required for cytokinesis
Summary: The trypanosome CIF1 zinc-finger motifs are essential for CIF1–CIF2 complex assembly, and along with the coiled-coil motifs in CIF1 are required for initiation of cytokinesis.
- Effects of mutating α-tubulin lysine 40 on sensory dendrite development
Highlighted Article: Neurons are enriched in post-translationally modified microtubules. Targeted mutagenesis of endogenous α-tubulin in flies reveals that dendrite branch refinement is altered by acetylation-blocking mutations.
- Giantin-knockout models reveal a feedback loop between Golgi function and glycosyltransferase expression
Summary: Knockout of giantin in a genome-engineered cell line and zebrafish models reveals the capacity of the Golgi to control its own biochemistry through changes in gene expression.
- Phosphorylation of the RNA-binding protein Zfs1 modulates sexual differentiation in fission yeast
Summary: The RNA-binding protein Zfs1 regulates accumulation of the G1 cyclin Puc1, a process that is modulated by phosphorylation. This regulatory mechanism has an important impact on cell differentiation.
- CREB3L1-mediated functional and structural adaptation of the secretory pathway in hormone-stimulated thyroid cells
Summary: CREB3L1 has a role during the adaptation of the secretory pathway in response to high secretory demand in thyroid cells, a process with direct impact on thyroid physiology.
- RhoC regulates the actin remodeling required for phagosome formation during FcγR-mediated phagocytosis
Summary: RhoC accumulates at phagocytic cups and modulates an mDia1-dependent remodeling of cortical F-actin that is required for FcγR-mediated phagocytosis in macrophages.
- Quantitative analysis of multilayer organization of proteins and RNA in nuclear speckles at super resolution
Summary: Multi-color structured illumination microscopy imaging studies reveal a multilayer organization of nuclear speckles due to the interplay between favorable sequence-encoded intermolecular interactions of speckle-resident proteins and RNAs.
TOOLS AND RESOURCES
- In situ imaging of mitochondrial translation shows weak correlation with nucleoid DNA intensity and no suppression during mitosis
Highlighted Article: Imaging de novo mitochondrial protein synthesis with a novel fluorescence method shows the translational output throughout the cell and reveals a low correlation with mitochondrion genome copy number.
- ImaEdge – a platform for quantitative analysis of the spatiotemporal dynamics of cortical proteins during cell polarization
Summary: An open-source software package, ImaEdge, automates the segmentation of the cell cortex from time-lapse movies, and enables quantitative extraction of cortical protein dynamics in cells undergoing polarization.
- Real-time observation of light-controlled transcription in living cells
Summary: Blue light-induced chromatin recruitment (BLInCR) enables rapid and reversible targeting of effector proteins to nuclear loci with high temporal resolution for analyzing transcription activation.
This issue
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Other journals from The Company of Biologists
Intramembrane proteolysis at a glance: from signalling to protein degradation
In this Cell Science at a Glance article and accompanying poster, Nathalie Kühnle, Verena Dederer and Marius K. Lemberg review our current knowledge on the function of intramembrane proteolysis in mammalian cells.
Meeting report – Cell dynamics: organelle–cytoskeleton interface
Binyam Mogessie, Helen Zenner and Jörg Renkawitz summarise the Journal of Cell Science’s second meeting that was held in Lisbon, Portugal, earlier this year.
Mole – Impact!
"We love to speculate that if a paper is completely wrong, it will receive a great many citations saying how wrong it is (actually, I don't think this is true; if it's wrong, we tend to just fuggetaboutit)."
Read Mole’s thoughts on the issue of impact in scientific literature.
First Person interviews
Have you seen our First Person interviews with the early-career first authors of our papers? The authors talk about their work in and out of the lab, the journeys that led them to where they are now and the scientists who inspired them along the way. Recently, we caught up with first authors Eric Clement Arakel, Alex Generous, Taylor Miller, Robert Bloodgood and Roger Sloboda, and Rachel Caines.
Journal of Cell Science announces Transparent peer review
In the interests of promoting transparency around the editorial process, Journal of Cell Science will now be publishing a ‘Peer review history’ file alongside published papers, where the author has opted in to such a file being published. All research papers submitted on or after 1 August 2019 are eligible. More information can be found here.
Journal of Cell Science (JCS), Journal of Cell Biology (JCB) and Molecular Biology of the Cell (MBoC) announce a new manuscript transfer option that will empower authors whose manuscripts have been declined to seamlessly transfer their manuscripts and associated peer review reports between the journals.
preLights - Single molecule mechanics resolves the earliest events in force generation by cardiac myosin
Alyson Smith highlights a preprint that captures the fastest events in myosin’s ATPase cycle, which have remained opaque to previous assays.
Catch up with other recent preLights selected for the cell science community.
Articles of interest in our sister journals
Syndapin constricts microvillar necks to form a united rhabdomere in Drosophila photoreceptors
Sakiko Ogi, Atsushi Matsuda, Yuna Otsuka, Ziguang Liu, Takunori Satoh, Akiko K. Satoh (Development 2019 146: dev169292)
Tiantian Ji, Lina Zhang, Mingxi Deng, Shengshuo Huang, Ying Wang, Tri Thanh Pham, Andrew Alan Smith, Varun Sridhar, Clemens Cabernard, Jiguang Wang, Yan Yan (Disease Models & Mechanisms 2019 12: dmm040147)