Researchers have discovered the underlying mechanism of Atg2-mediated lipid transfer in autophagy, revealing two distinct mechanisms that enable proper growth of the autophagosomal membrane. The phosphorylation of a specific region of Atg2, mediated by Atg1, enables its binding to the endoplasmic reticulum and subsequent lipid transfer.
A study by John Innes Centre researchers reveals that inner tissues play a crucial role in shaping plant organs, contradicting the widespread assumption that external layers control growth. By analyzing cell division orientation and gene editing techniques, they discovered genes affecting stem thickness in Arabidopsis.
Researchers found that certain unicellular organisms can stick together when fed specific bacteria, revealing a possible mode of early animal evolution. This discovery sheds light on how cells began to cooperate and reproduce as multicellular organisms billions of years ago.
A study by IRB Barcelona and BSC suggests that the origin of complex cells was a longer, more gradual process than previously thought. The researchers identified signals from bacterial groups and giant viruses that may have facilitated gene exchange, contributing to the complexity of eukaryotic cells.
A new study by UC3M researchers reveals how extracellular acidosis destabilizes microtubules, the 'avenues' that organize internal cellular traffic, leading to disruptions in cellular function. This finding holds significant implications for understanding pathologies like cancer, diabetes, and certain infectious processes.
Researchers identify previously unknown microbe living in close partnership with another organism inside stromatolites, providing insights into how complex life began. The discovery sheds light on the evolution of eukaryotes and the emergence of mitochondria.
A research team at Goethe University Frankfurt has compiled a catalog of human E3 ligases and mapped their relationships, revealing family-specific functions. The study identifies 40 additional E3 ligases suitable for PROTAC development, expanding the range of tissues and diseases targeted by degradation therapies.
A study on a blood parasite's genome has led to the development of a new material with unusual properties. The material combines toughness and softness, characteristics that are typically not found in the same substance.
A new organism, Solarion arienae, and its unique predatory structure have been discovered, providing insight into the earliest stages of complex life. The research team identified ancient mitochondrial pathways and established a new phylum, Caelestes, reshaping our understanding of eukaryotic evolution.
AcCELLerate has partnered with ATCC to provide customized Master, Working, and assay-ready instaCELL banks for research clients. Researchers will gain access to high-quality, authenticated cell lines with increased assay reproducibility.
Researchers have developed novel methods to advance precise chromosomal manipulation by addressing challenges in the Cre-Lox system. Their innovations include asymmetric Lox site design and a protein-directed evolution system, enabling targeted integration of large DNA fragments up to 18.8 kb.
The study reveals that eukaryogenesis occurred abruptly at a critical gene length of 1,500 nucleotides, marking the emergence of the eukaryotic cell. This phase transition was algorithmic, driven by the tension between increasing gene length and protein complexity.
Researchers discovered that Lacrymaria cells utilize novel cytoskeletal components to achieve dynamic shape-shifting ability. They found a myoneme cytoskeleton and microtubule cytoskeleton containing a novel giant protein, enabling extreme cellular deformation.
Researchers studied Prorocentrum cordatum to understand its molecular processes, revealing a unique photosynthetic machinery that may help it adapt to changing light conditions. The findings could lead to improved understanding of harmful algal blooms and their role in climate change.
Researchers at Vanderbilt University Medical Center discovered iron storage 'spheres' inside C. diff bacteria, which are crucial for infection and offer new targets for antibacterial drugs. The study, published in Nature, also reveals that bacteria may compartmentalize biochemical processes in a way similar to eukaryotic cells.
A team of researchers from Goethe University Frankfurt has discovered a central switch point in the mitochondrial signaling chain under misfolding stress. The mitochondria send two chemical signals to the cell when protein misfolding stress occurs, triggering a protective response that reduces misfolded proteins and stabilizes membranes.
Researchers investigate how bacteria modify host RNA using effector proteins to ensure their survival, a process previously unknown in eukaryotes. The team aims to decipher the mechanisms behind this process and its benefits for the bacteria.
Researchers have identified a new group of mitochondrial viruses confined to arbuscular mycorrhizal fungi Glomeromycotina, which may represent an ancestral lineage of mitoviruses. These large duamitoviruses possess distinct characteristics and are globally distributed in ecological niches occupied by glomeromycotinian fungi.
Researchers from Penn State and Ohio State University used structural biology, biophysics, and cell biology to understand how pioneer factors interact with nucleosomes. They found that a specific region of the protein helps it access DNA, making it accessible for proteins involved in gene expression.
A Wayne State University researcher has received a $1.95 million grant to study the regulation of inositol synthesis and its effects on essential cellular functions in human cells. The study aims to identify mechanisms that regulate inositol synthesis and determine its impact on cell signaling and metabolism.
Researchers at Washington University in St. Louis demonstrated that eukaryotic cells can control organelle size by exhibiting random bursts of growth, maintaining a narrow window of precision within this noise., The study suggests a biophysical mechanism for the robustness and universality of organelle size control.
A recent study published in Nature Communications reveals that nascent peptide chains with N-terminal sequences rich in aspartic acid or glutamic acid can lead to abortion of translation in eukaryotic cells through intrinsic ribosome destabilization (IRD). This phenomenon is associated with biased amino acid usage in proteomes, where t...
A study on the flagellate Angomonas deanei reveals how host cells control their bacterial symbionts through protein transfer. This process enabled the bacteria to become cell organelles, such as mitochondria and chloroplasts, with reduced genomes and controlled metabolism.
Researchers discovered a new ancient branch of life, Provora, comprising microbial predators that nibble prey to death. These microbes, called nibblerids and nebulids, were found in marine habitats globally and differ by 170-180 nucleotides from all other living things.
The study reveals the structure of the 15-subunit IFT-B complex, a crucial component in cilia formation and maintenance. The complex's elongated and flexible nature is consistent with previous low-resolution reconstructions, and two configurations are identified that may drive bi-directional movement.
Scientists have elucidated the regulatory functions of Pan1p, a key player in late-stage clathrin-mediated endocytosis. The protein drives actin assembly and disassembly, facilitating vesicle internalization.
Researchers used artificial intelligence to demonstrate the correlation between cytoskeleton organisation and nuclear position in eukaryotic cells. The study successfully predicted the presence and location of nuclei in over 8,000 cells with high accuracy, transforming the way scientists approach complex biological systems.
A new study challenges a popular scenario explaining the origin of eukaryotes, suggesting that cells can grow to considerable volume without acquiring mitochondria. Researchers explore energy requirements and genome arrangement in prokaryotes and eukaryotes, revealing overlap between cell types rather than a hard boundary line.
Researchers at the Center for Genomic Regulation (CRG) found that chromatin, a genetic architecture that protects DNA and regulates gene expression, originated in ancient microbes between 1-2 billion years ago. This eukaryotic innovation has been essential for life since its emergence.
Eukaryotes emerged in an anoxic environment in the ocean, and their mitochondria-bearing cells likely resulted from a merger between archaea and bacteria. This finding contradicts the long-held view that oxygenation of Earth's surface environment led to eukaryogenesis.
Researchers discover medusavirus undergoes four stages of maturation within host cells, with unique particle structures and DNA-protein exchange mechanisms. The findings provide new insights into giant viruses' biology and behavior.
A Japanese research team developed a new microfluidic chip that uses dielectrophoresis to sort living cells in just 30 minutes. This technology eliminates the need for labor-intensive sample pretreatment and chemical tagging techniques, preserving cell structure and enabling faster separation of differently sized cells.
Researchers at Uppsala University discovered that the ancestors of Legionella bacteria infected eukaryotic cells around 2 billion years ago. This finding challenges the chicken-or-egg debate about which came first, phagocytosis or mitochondria evolution.
Researchers discovered that bacteria use an ancient molecule called polyphosphate to silence problematic genetic elements, similar to heterochromatin in eukaryotes. This process helps protect the bacterial cell from harm and could enable scientists to develop new antibiotics.
A new study uses deep learning to build three-dimensional models of protein interactions in eukaryotes, revealing hundreds of previously unknown complexes. This research has significant implications for understanding cellular processes and developing new medications for various health disorders.
A team of researchers has discovered a unique organism that lacks essential genes for copying and distributing its DNA. The free-living protist Carpediemonas membranifera is unable to produce kinetochore proteins, which separate chromosomes during cell division.
Researchers visualize key proteins in Drosophila brains, revealing their daily oscillations and spatial organization. The study highlights the importance of clock proteins in regulating circadian rhythms, which control sleep-wake cycles, metabolism, and cancer risk.
Membraneless organelles, a new form of cellular compartment, are being studied by Professor Edward Lemke. His team has successfully designed and incorporated these organelles into living cells, enabling innovative functions such as protein engineering and imaging techniques.
Researchers have identified distinct ubiquitination patterns that underlie cell recovery following different environmental stressors. For heat stress, ubiquitination primes cells to dismantle stress granules and reinitiate normal cellular activities after stress has been removed.
Researchers developed a machine learning technique to speed up microscopic cell analysis, reducing processing time from months to just seconds. The new approach uses neural networks to create detailed maps of cell composition without disrupting the cells, enabling rapid label-free biochemical composition mapping.
A new study by UIC researchers shows that antibiotics designed for bacteria can also inhibit protein synthesis in human cells, potentially treating diseases like cancer and neurodegenerative disorders. The team engineered yeast ribosomes to be more bacterial-like, allowing them to respond to macrolide antibiotics.
LanCL proteins play a vital role in regulating kinases in eukaryotic cells. Their absence leads to the accumulation of activated kinases, causing cell death in mice. The study suggests a new mechanism for controlling abnormal kinases and their potential link to cancer.
The eukaryotic cell nucleus has an organized layout, similar to a superstore, with DNA-packed into compact structures and molecules moving efficiently through channels. The chromatin fibers work like shelves, holding genetic information, while proteins move randomly within the channels according to Brownian motion rules.
Eukaryotic cells use distillation-like processes to deliver molecules to correct destinations, with two spontaneous mechanisms working together. The process is optimized by specific parameters that ensure effective delivery of essential substances.
The study reveals that the propensity to molecular aggregation is the main control parameter of the sorting process, with an optimal value ensuring maximum speed. This finding has implications for understanding the origin of pathologies like cancer and developing targeted therapies.
Researchers from Hiroshima University have identified a mechanism that allows some mutant cells to recover from a displaced nucleus during mitosis, potentially leading to cell death. The study found that microfilaments play a role in pushing the nucleus to safety.
Researchers find that nuclei, chloroplasts, and pyrenoids can persist for weeks and months after cell death in eukaryotic cells, challenging previous assumptions about their decay rate. This discovery helps to narrow the age range of complex life on Earth, suggesting its emergence around 1,700 million years ago.
The Protein Society appoints John Kuriyan as Editor-in-Chief of Protein Science, building on his extensive contributions to understanding protein regulation and mechanisms. With expertise in structural analysis, computer simulations, and biochemical analyses, Kuriyan aims to unify protein-centered science and advance the field.
Researchers propose minimal extension to classic equilibrium model, capturing high specificity and noise in eukaryotic gene expression. The new model suggests a trade-off between specificity and noise, with high specificity leading to increased noise.
Scientists at Goethe University have developed a method to produce artificial organelles in living yeast cells, enabling the creation of customized molecules. The new technology uses synthetic vesicles to introduce enzymes and metabolic pathways in isolation from the rest of the cell.
Researchers reconstructed evolutionary events based on genetic changes, finding complex cellular machinery evolved before mitochondrial symbiosis. The study suggests cell complexity increased before acquiring mitochondria, challenging current understanding of eukaryogenesis.
Researchers found that mammalian lipid droplets play a crucial role in organizing and supporting intracellular immune responses against microbial pathogens. The structures help drive metabolic shifts within cells toward an environment more conducive to host defense.
Researchers have discovered that mitochondrial RNA's are packaged into tiny liquid droplets that can fuse together and break apart, providing insight into the dynamic nature of mitochondrial genetics. This finding is crucial for understanding how cells produce energy and has implications for diseases caused by dysfunctional mitochondria.
Researchers have found a group of bacteria thriving in the deep-sea Black Sea with genetic material carrying both bacterial and archaeal lipid pathways. This discovery suggests that 'mixed' membranes may be more widespread than previously thought, bridging the membrane lipid divide between Bacteria and Archaea.
A recent study suggests that giant viruses, such as medusavirus, may hold the key to understanding the evolutionary origins of the eukaryotic nucleus. The virus's ability to occupy and use the host nucleus for replication provides evidence for lateral gene transfer between ancient proto-eukaryotic cells and giant viruses.
A novel connection between primordial organisms and complex life has been discovered, shedding light on the evolutionary origins of the cell division process. The study reveals a common regulatory mechanism in both archaea and eukaryotes, providing new insights into the history of eukaryotic cells.
Researchers identified mechanism of competition between distinct mitochondrial genomes in the same cell, which depends on impact on cell metabolism. The study found that factors like gene function, drugs, and dietary changes influence preference for specific mtDNA variants.
Researchers at Caltech have found that amino acid tails on RNA polymerase enzymes help them work with different types of DNA, enabling gene activation. The longer the DNA molecule, the longer the tail.
Researchers identified a new function for histones, enabling the transfer of electrons from one molecule to another, converting copper into a usable form for cells. This discovery refutes earlier theories and suggests histones played a crucial role in the evolution of eukaryotes, including humans, around 2 billion years ago.
Researchers develop a molecular light switch to control the T3SS injectisome, enabling precise and efficient protein delivery into host cells. This technology has potential applications in biotechnology and medicine, including tumor therapy.