Article
Biochemistry & Molecular Biology
Nadine Mueller, Andriy Khobta
Summary: The oxidation-induced DNA modification 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) has been found to interfere with gene transcription activity in two distinct ways, affecting both the promoter activity and gene expression through different mechanisms. The excision preferences of the repair enzyme OGG1 for 8-oxodG at different positions lead to varying degrees of decrease in promoter activity. The presence of different lesions at specific positions can either silence gene expression or enhance promoter activity, suggesting a role for the AP endonuclease step in regulating the switch between active and repressed promoter states during base excision repair.
Review
Cell Biology
Mariarosaria De Rosa, Samuel A. Johnson, Patricia L. Opresko
Summary: Telomeres are protective nucleoprotein structures that cap linear chromosome ends, vital for genome stability. Shortening and dysfunction of telomeres may lead to cellular senescence, aging, or tumorigenesis. The enzyme telomerase is expressed in human reproductive cells, some stem cells, and most cancer cells to maintain telomere length by restoring telomeric DNA. Oxidative stress from excess reactive oxygen species is associated with accelerated telomere shortening and damage, which may contribute to degenerative diseases and cancer. The highly conserved guanine oxidation system involves specialized enzymes to mitigate the effects of mutagenic base lesions at telomeres.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Sung Woo Kim, Bongki Kim, Jongsoo Mok, Eun Seo Kim, Joonghoon Park
Summary: The research identified significantly higher levels of 8-oxoG in infertile bull sperm, with over 81% of 8-oxoG loci distributed around the transcription start site and 165 genes harboring 8-oxoG exclusive to infertile sperm. Functional enrichment and network analysis showed significant enrichment of Golgi apparatus-related products from 8-oxoG genes in infertile sperm.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Multidisciplinary Sciences
Sugako Oka, Julio Leon, Kunihiko Sakumi, Nona Abolhassani, Zijing Sheng, Daisuke Tsuchimoto, Frank M. LaFerla, Yusaku Nakabeppu
Summary: 8-Oxoguanine accumulates in Alzheimer's disease brains, and deficiency of MTH1 and OGG1 can increase its accumulation, leading to microglial activation and neuronal loss. Minocycline can inhibit microglial activation and reduce neuroinflammation, providing a potential new approach for preventing and treating AD.
SCIENTIFIC REPORTS
(2021)
Article
Cell Biology
Tenghui Yu, Jesse Slone, Wensheng Liu, Ryan Barnes, Patricia L. Opresko, Landon Wark, Sabine Mai, Steve Horvath, Taosheng Huang
Summary: Mitochondrial dysfunction plays a crucial role in the aging process, and the accumulation of mutations in the mitochondrial genome is believed to contribute to this dysfunction. By studying a mouse model with error-prone mitochondrial DNA polymerase, researchers found that high levels of mitochondrial DNA mutations can lead to oxidative damage, compromised DNA integrity, and accelerated aging. These findings suggest that mitochondria play a central role in aging and may guide future research on potential therapeutics to mitigate the aging process.
Article
Chemistry, Analytical
Bocheng Tu, Zishan Feng, Haitao Wang, Wei Zhang, Weicong Ye, Hongbo Wang, Xianjin Xiao, Wenbo Zhao, Tongbo Wu
Summary: This new method utilizes lambda exonuclease and a background signal suppression probe, which successfully suppresses the background signal through probe structure design to achieve highly sensitive OGG detection. The detection limit is 5.0 x 10(-4) U mL(-1), and its potential clinical application value was demonstrated in biological samples.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Yushu Wu, Min Wu, Min Liu, Danfeng Wang, Lu Wang, Tianxin Weng, Jun Han
Summary: This study proposes a closing-upon-repair DNA tetrahedron nanoswitch (CRTN) for FRET imaging of the repair activity of 8-oxoguanine (8-OG) DNA glycosylase in living cells. CRTN undergoes a structure change from an open to closed state upon repair of 8-OG bases by the DNA glycosylase, generating a FRET signal with high specificity and accuracy. This method demonstrates good sensitivity and selectivity for detecting the activity of 8-OG DNA glycosylase both in vitro and in living cells, and provides a promising tool for studying genetic mutation-related diseases.
ANALYTICA CHIMICA ACTA
(2022)
Article
Biophysics
Hao Hu, Kejun Dong, Bei Yan, Yaoqin Mu, Yangwei Liao, Lei Zhang, Songcheng Guo, Xianjin Xiao, Xinyu Wang
Summary: This study proposed a shortened crRNA mode for the CRISPR-Cas12a system, greatly enhancing its signal-to-noise ratio. By taking advantage of this mode, a CRISPR-enhanced structure-switching aptamer assay (CESA) was developed for detecting 8-oxoG, which displayed impressive sensitivity and clinical practicability. Rating: 9/10.
BIOSENSORS & BIOELECTRONICS
(2023)
Editorial Material
Multidisciplinary Sciences
Amber Dance
Summary: By pushing fluorescent proteins further into the red end of the spectrum, bioengineers are expanding the color options and depth of penetration for biological imaging.
Article
Chemistry, Analytical
Yun Qiu, Bin Liu, Wenchao Zhou, Xueqing Tao, Yang Liu, Linxi Mao, Huizhen Wang, Hanwen Yuan, Yupei Yang, Bin Li, Wei Wang, Yixing Qiu
Summary: In this study, a DNAzyme-modified DNA tetrahedral nanomachine was designed for monitoring the activity of 8-oxoG DNA glycosylase. The method was successfully applied for screening inhibitors of 8-oxoG DNA glycosylase and assessing its activity in living cells.
Editorial Material
Multidisciplinary Sciences
Thomas C. Hansen
Summary: Water ice is found in various environments across the universe, and the construction of the phase diagram for crystalline phases of ice is still ongoing. A recently reported high-pressure phase, ice XIX, has ambiguous structure that requires further study.
NATURE COMMUNICATIONS
(2021)
Article
Mechanics
Peter A. A. Monkewitz, Hassan M. M. Nagib
Summary: The log law of the wall, which connects the inner and outer regions of wall-bounded turbulent flows, has been studied for over a century, but there is still no consensus on its prefactor value or universality. Currently, the most common diagnostic tool to identify the logarithmic parts of the velocity profile is to locate regions where the indicator function is constant. However, in pressure-driven flows like channel and pipe flows, the indicator function is significantly affected by a term proportional to the wall-normal coordinate. By considering the common part of the inner and outer expansions, a new method is proposed to determine the prefactor and the linear term in pressure-driven flows, providing values consistent with those derived from Reynolds number dependence analysis and improving our understanding.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Genetics & Heredity
Anton Endutkin, Elena P. Panferova, Alexander E. Barmatov, Dmitry O. Zharkov
Summary: The study characterized the properties of putative GO system DNA glycosylases from Staphylococcus aureus, an important human opportunistic pathogen causing hospital infections. The findings suggest that S. aureus possesses an active GO system, which could possibly be targeted for sensitization of this pathogen to oxidative stress.
Article
Chemistry, Medicinal
Stephen Stanio, Jan Henric T. Bacurio, Haozhe Yang, Marc M. Greenberg, Ashis K. Basu
Summary: This study found that 8-OxodGuo is a common DNA damage and can be located in three mutational hotspots in human cancer cells. The study also found that 8-OxodGuo has a low replication-blocking effect and low error rate. Different positions of 8-OxodGuo have different mutation spectra, but hPol lc and hPol t play important roles in error-prone bypass of 8-OxodGuo at all positions.
CHEMICAL RESEARCH IN TOXICOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Javier Perez-Gonzalez, Sebastian J. Hidalgo-de-Trucios, Carlos Sanchez-Garcia, Juan Ignacio Rengifo Gallego
Summary: In Spain, female hunters are more interested in hunting big game species compared to male hunters. This may have potential consequences on the sustainability of hunting and biodiversity conservation.
Review
Pharmacology & Pharmacy
Peter Kolb, Terry Kenakin, Stephen P. H. Alexander, Marcel Bermudez, Laura M. Bohn, Christian S. Breinholt, Michel Bouvier, Stephen J. Hill, Evi Kostenis, Kirill A. Martemyanov, Rick R. Neubig, H. Ongun Onaran, Sudarshan Rajagopal, Bryan L. Roth, Jana Selent, Arun K. Shukla, Martha E. Sommer, David E. Gloriam
Summary: GPCRs regulate various physiological processes and their effects depend on the pairing of a receptor and a ligand. Ligands that induce biased signalling can lead to better drug effects and fewer side effects. However, ligand bias is complex, making it necessary to develop guidelines for designing and reporting biased signalling experiments.
BRITISH JOURNAL OF PHARMACOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Stephen K. Burley, Charmi Bhikadiya, Chunxiao Bi, Sebastian Bittrich, Li Chen, Gregg Crichlow, Jose M. Duarte, Shuchismita Dutta, Maryam Fayazi, Zukang Feng, Justin W. Flatt, Sai J. Ganesan, David S. Goodsell, Sutapa Ghosh, Rachel Kramer Green, Vladimir Guranovic, Jeremy Henry, Brian P. Hudson, Catherine L. Lawson, Yuhe Liang, Robert Lowe, Ezra Peisach, Irina Persikova, Dennis W. Piehl, Yana Rose, Andrej Sali, Joan Segura, Monica Sekharan, Chenghua Shao, Brinda Vallat, Maria Voigt, John D. Westbrook, Shamara Whetstone, Jasmine Y. Young, Christine Zardecki
Summary: RCSB PDB, funded by several US government agencies, has been providing service to structural biologists and PDB data consumers worldwide since 1999. It is a founding member of the worldwide Protein Data Bank partnership, serving as the US data center for the global PDB archive. RCSB PDB also develops new tools and features for 3D structure analysis and visualization.
Article
Biochemistry & Molecular Biology
Christine Zardecki, Shuchismita Dutta, David S. Goodsell, Robert Lowe, Maria Voigt, Stephen K. Burley
Summary: PDB-101 is an online portal created to support education, research, and promotion of structural biology and protein science. It provides materials for exploring atomic-level three-dimensional structures of biomolecules and aims to train the next generation of users.
Review
Biochemistry & Molecular Biology
Jose M. Duarte, Shuchismita Dutta, David S. Goodsell, Stephen K. Burley
Summary: The symmetry of biological molecules has intrigued structural biologists, with around 40% of structures exhibiting some type of symmetry. The RCSB Protein Data Bank offers tools for exploring the symmetry of biological macromolecules.
EMERGING TOPICS IN LIFE SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Shuchismita Dutta, Jennifer Jiang, Sutapa Ghosh, Shriya Patel, Charmi Bhikadiya, Robert Lowe, Maria Voigt, David Goodsell, Christine Zardecki, Stephen Burley
Summary: This article describes an interdisciplinary undergraduate course that explores the molecular basis of diabetes through data analysis and cultivates students' skills in science communication. Through collaborative activities, participants have collectively created educational materials that present complex ideas about major global health challenges in an accessible format.
BIOCHEMISTRY AND MOLECULAR BIOLOGY EDUCATION
(2023)
Article
Chemistry, Medicinal
Lukas Heyder, Phil M. M. Hochban, Corey Taylor, Florent Chevillard, Christof Siefker, Christian Iking, Hannes Borchardt, Achim Aigner, Gerhard Klebe, Andreas Heine, Peter Kolb, Wibke E. Diederich
Summary: In this study, fragment-sized hits binding to Pim-1 kinase were optimized using a combination of computational, synthetic, and crystallographic expertise. The resulting potent ligands target rarely-targeted regions of Pim-1 kinase with affinities in the nanomolar range. The combination of computational and experimental approaches successfully developed a novel molecular scaffold for inhibition of Pim-1 kinase, targeting specific surface regions that have been less frequently investigated.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Stephen K. Burley, Charmi Bhikadiya, Chunxiao Bi, Sebastian Bittrich, Henry Chao, Li Chen, Paul A. Craig, Gregg Crichlow, Kenneth Dalenberg, Jose M. Duarte, Shuchismita Dutta, Maryam Fayazi, Zukang Feng, Justin W. Flatt, Sai Ganesan, Sutapa Ghosh, David S. Goodsell, Rachel Kramer Green, Vladimir Guranovic, Jeremy Henry, Brian P. Hudson, Igor Khokhriakov, Catherine L. Lawson, Yuhe Liang, Robert Lowe, Ezra Peisach, Irina Persikova, Dennis W. Piehl, Yana Rose, Andrej Sali, Joan Segura, Monica Sekharan, Chenghua Shao, Brinda Vallat, Maria Voigt, Ben Webb, John D. Westbrook, Shamara Whetstone, Jasmine Y. Young, Arthur Zalevsky, Christine Zardecki
Summary: The RCSB PDB is a founding member of the wwPDB and serves as the US data center for the open-access PDB archive. The upgraded RCSB.org web portal provides a one-stop-shop for open access to a large number of experimentally-determined PDB structures and computationally-predicted CSMs, along with related functional annotations.
NUCLEIC ACIDS RESEARCH
(2023)
Review
Biophysics
Stephen K. Burley, Helen M. Berman, Wah Chiu, Wei Dai, Justin W. Flatt, Brian P. Hudson, Jason T. Kaelber, Sagar D. Khare, Arkadiusz W. Kulczyk, Catherine L. Lawson, Grigore D. Pintilie, Andrej Sali, Brinda Vallat, John D. Westbrook, Jasmine Y. Young, Christine Zardecki
Summary: Structural biology has been transformed by the Resolution Revolution of three-dimensional electron microscopy (3DEM), with information archived in the Protein Data Bank (PDB) and Electron Microscopy Data Bank (EMDB). The impact of the resolution revolution is demonstrated in six key areas across the biosciences.
BIOPHYSICAL REVIEWS
(2022)
Article
Biochemistry & Molecular Biology
Manas K. Ghosh, Dao Feng Xiang, Frank M. Raushel
Summary: Campylobacter jejuni is the main cause of food poisoning in the United States, and the capsule polysaccharide (CPS) on its surface is important for immune evasion. The biosynthesis of GDP-3,6-dideoxy-beta-L-ribo-heptose, a component of CPS, involves multiple enzymes and can vary in different serotypes of C. jejuni.
Article
Biochemistry & Molecular Biology
Dao Feng Xiang, Maggie Xu, Manas K. Ghosh, Frank M. Raushel
Summary: Campylobacter jejuni is the leading cause of food poisoning in North America. This bacterium is coated with a capsular polysaccharide (CPS) consisting of various carbohydrates, including different stereoisomers of GDP-6-deoxy-heptose, GDP-d-glycero-heptose, and GDP-3,6-dideoxy-heptose. The biosynthesis of these modifications involves multiple enzymes with different substrate profiles.
Article
Chemistry, Medicinal
Merlin Bresinsky, Aida Shahraki, Peter Kolb, Steffen Pockes, Hannes Schihada
Summary: In this study, a signaling pathway-independent readout of compound-GPR3 interaction was developed, providing new cues for the pharmacological manipulation of GPR3 activity. This has significant implications for the future development of drugs targeting these pharmacologically attractive oGPCRs.
JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Letter
Biochemical Research Methods
Wenqing Xu, Sameer Velankar, Ardan Patwardhan, Jeffrey C. Hoch, Stephen K. Burley, Genji Kurisu
Summary: The Protein Data Bank (PDB) is a global archive of atomic-level, three-dimensional structures of biological macromolecules. Recently, there has been an increase in new structure depositions from Asia. In 2022, Protein Data Bank China (PDBc) joined the Worldwide Protein Data Bank (wwPDB) as an Associate Member. This letter discusses the history of wwPDB, the mechanisms for adding new data centers, and the processes for incorporating PDBc into the partnership.
ACTA CRYSTALLOGRAPHICA SECTION D-STRUCTURAL BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Niklas Rosier, Denise Moennich, Martin Nagl, Hannes Schihada, Alexei Sirbu, Nergis Konar, Irene Reyes-Resina, Gemma Navarro, Rafael Franco, Peter Kolb, Paolo Annibale, Steffen Pockes
Summary: Dopamine D-1-like receptors are the most abundant type of dopamine receptors in the central nervous system. The synthesis of new fluorescent ligands derived from D1R antagonist SCH-23390 was described, which can be used as tools for the visualization of D-1-like receptors. The high-affinity ligand UR-NR435 (25) showed excellent selectivity towards D-1-like receptors and proved to be a neutral antagonist in binding studies. This fluorescent ligand is a useful tool for studying native D-1 receptors in various experimental setups.
Article
Biochemistry & Molecular Biology
Martin Nagl, Denise Moennich, Niklas Rosier, Hannes Schihada, Alexei Sirbu, Nergis Konar, Irene Reyes-Resina, Gemma Navarro, Rafael Franco, Peter Kolb, Paolo Annibale, Steffen Pockes
Summary: This study describes the synthesis of a set of new fluorescent ligands for visualization of dopamine D-2-like receptors. The ligand UR-MN212 (20) showed high affinity for D-2-like receptors and moderate selectivity towards D-1-like receptors. It displayed rapid association with D2longR and can be used for fluorescence microscopy studies. The ligand's binding affinity was determined in a single-digit nanomolar range, consistent with radioligand binding data.
Article
Mathematical & Computational Biology
Valerie de Crecy-Lagard, Rocio Amorin de Hegedus, Cecilia Arighi, Jill Babor, Alex Bateman, Ian Blaby, Crysten Blaby-Haas, Alan J. Bridge, Stephen K. Burley, Stacey Cleveland, Lucy J. Colwell, Ana Conesa, Christian Dallago, Antoine Danchin, Anita de Waard, Adam Deutschbauer, Raquel Dias, Yousong Ding, Gang Fang, Iddo Friedberg, John Gerlt, Joshua Goldford, Mark Gorelik, Benjamin M. Gyori, Christopher Henry, Geoffrey Hutinet, Marshall Jaroch, Peter D. Karp, Liudmyla Kondratova, Zhiyong Lu, Aron Marchler-Bauer, Maria-Jesus Martin, Claire McWhite, Gaurav D. Moghe, Paul Monaghan, Anne Morgat, Christopher J. Mungall, Darren A. Natale, William C. Nelson, Sean O'Donoghue, Christine Orengo, Katherine H. O'Toole, Predrag Radivojac, Colbie Reed, Richard J. Roberts, Dmitri Rodionov, Irina A. Rodionova, Jeffrey D. Rudolf, Lana Saleh, Gloria Sheynkman, Francoise Thibaud-Nissen, Paul D. Thomas, Peter Uetz, David Vallenet, Erica Watson Carter, Peter R. Weigele, Valerie Wood, Elisha M. Wood-Charlson, Jin Xu
Summary: In the past 25 years, biology has entered the genomic era and has become a science of 'big data'. However, accurate functional annotations of the proteins encoded by sequenced genomes are lacking, with only about half of the predicted proteins having accurate annotations. This gap in knowledge hampers the progress of biological research. To address this issue, a brainstorming meeting funded by the National Science Foundation was held in February 2022, bringing together data scientists, biocurators, computational biologists, and experimentalists to comprehensively assess the current state of functional annotations of protein families and propose solutions to move forward.
DATABASE-THE JOURNAL OF BIOLOGICAL DATABASES AND CURATION
(2022)