Article
Multidisciplinary Sciences
Edmond M. Linossi, Kunlun Li, Gianluca Veggiani, Cyrus Tan, Farhad Dehkhoda, Colin Hockings, Dale J. Calleja, Narelle Keating, Rebecca Feltham, Andrew J. Brooks, Shawn S. Li, Sachdev S. Sidhu, Jeffrey J. Babon, Nadia J. Kershaw, Sandra E. Nicholson
Summary: The researchers identified an exosite on the SOCS2-SH2 domain that can enhance the affinity of SOCS2 for phosphorylated targets by binding a non-phosphorylated peptide, leading to increased inhibition of growth hormone signaling.
NATURE COMMUNICATIONS
(2021)
Article
Biology
Hin Ting Wan, Alice Hm Ng, Wang Ka Lee, Feng Shi, Chris Kong-Chu Wong
Summary: This study revealed the high affinity binding of hSTC1 to the membrane receptor IGF2R/MPRI in human leukemia monocytic cell line ThP-1, suggesting its potential role in inflammation and cancer development.
LIFE SCIENCE ALLIANCE
(2022)
Article
Biochemistry & Molecular Biology
Alicia J. Angelbello, Raphael Benhamou, Suzanne G. Rzuczek, Shruti Choudhary, Zhenzhi Tang, Jonathan L. Chen, Madhuparna Roy, Kye Won Wang, Ilyas Yildirim, Albert S. Jun, Charles A. Thornton, Matthew D. Disney
Summary: A lead small molecule was designed to bind toxic RNA repeats associated with myotonic dystrophy type 1 and Fuchs endothelial corneal dystrophy, rescuing disease biology in patient-derived cells and in vivo. Downstream effects of the small molecule differ in the two diseases due to the location of the repeat expansion, disabling or stimulating quality control pathways to rid cells of toxic RNA.
CELL CHEMICAL BIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Kai-Bo Wang, Yushuang Liu, Yipu Li, Jonathan Dickerhoff, Jinzhu Li, Ming-Hua Yang, Danzhou Yang, Ling-Yi Kong
Summary: This study investigates the effects of G-oxidation on the G4 structure of the BLM gene promoter. It was found that OG can induce a G-vacancy-containing G4, which can be filled in and stabilized by guanine metabolites and derivatives. Cellular guanine metabolites, such as cGMP and GTP, were found to bind and stabilize the OG-induced vG4, suggesting their potential regulatory role in response to oxidative damage in gene regulation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Jinchao Lou, Jennifer A. Schuster, Francisco N. Barrera, Michael D. Best
Summary: This study reports a stimuli-responsive liposome delivery strategy based on phosphorylated small molecules. The researchers designed and synthesized lipid switches with two ZnDPA units, which successfully achieved selective cargo release in the presence of ATP. Cellular delivery analysis using fluorescence microscopy and pharmacological ATP manipulation confirmed the specificity of liposome delivery, which increased with intracellular ATP accumulation and was inhibited by ATP downregulation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Cell Biology
Cathy J. Spangler, Satya P. Yadav, Dongx Li, Carinne N. Geil, Charlotte B. Smith, Gang Greg Wang, Tae-Hee Lee, Robert K. McGinty
Summary: The activity of DOT1L is regulated by the binding of ubiquitin and cofactors, and its interaction with ubiquitin and the nucleosome acidic patch is crucial for cell proliferation in leukemia.
Article
Biochemical Research Methods
Mark Villamil, Weidi Xiao, Clinton Yu, Lan Huang, Ping Xu, Peter Kaiser
Summary: Protein ubiquitylation is an important posttranslational modification that regulates various cellular processes. Different polyubiquitin chain types are recognized and interpreted by different proteins. In this study, the UIML domain of the yeast transcription factor Met4 was identified as a strictly K48-polyubiquitin specific binding unit and used to develop an affinity probe for purification of proteins modified with K48-linked polyubiquitin chains.
MOLECULAR & CELLULAR PROTEOMICS
(2022)
Article
Biophysics
Meina Ren, Lina Zhao, Ziyi Ma, Hailong An, Siewert Jan Marrink, Fude Sun
Summary: The association between CD44 and the N-terminal (FERM) domain of cytoskeleton adaptors is crucial for cell proliferation, migration, and signaling. Phosphorylation of the cytoplasmic domain (CTD) of CD44 regulates this association, with phosphorylation at S291 inhibiting complexation and phosphorylation at S325 promoting the CD44-FERM linkage. This phosphorylation-driven transformation is PIP2-dependent, with PIP2 affecting the stability of the closed and open conformation, and its replacement by POPS greatly reducing this effect.
BIOPHYSICAL JOURNAL
(2023)
Article
Cell Biology
Nader Rahimi, Rachel X. Y. Ho, Kevin Brown Chandler, Kyle Oliver Corcino De la Cena, Razie Amraei, Ashley J. Mitchel, Nels Engblom, Catherine E. Costello
Summary: TMIGD1 interacts with ERM family proteins moesin and ezrin, regulating their cellular localization and impacting cell morphology, migration, and mitotic spindle organization. The findings provide a molecular framework for understanding the complex functional interplay between TMIGD1 and ERM family proteins in the regulation of cell adhesion and mitotic spindle assembly, with implications in physiological and pathological processes such as cancer progression.
JOURNAL OF BIOMEDICAL SCIENCE
(2021)
Article
Multidisciplinary Sciences
Liang Yu, Mengchen Xu, Yupeng Yan, Shuchen Huang, Mengmeng Yuan, Bing Cui, Cheng Lv, Yu Zhang, Hongrui Wang, Xiaolei Jin, Rutai Hui, Yibo Wang
Summary: In this study, the authors demonstrate that ZFYVE28 is involved in insulin resistance by promoting the degradation of phosphorylated insulin receptor, indicating it may serve as a potential therapeutic target to improve insulin sensitivity.
NATURE COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Hyun-Kyu Choi, Hyunook Kang, Chanwoo Lee, Hyun Gyu Kim, Ben P. Phillips, Soohyung Park, Charlotte Tumescheit, Sang Ah Kim, Hansol Lee, Soung-Hun Roh, Heedeok Hong, Martin Steinegger, Wonpil Im, Elizabeth A. Miller, Hee-Jung Choi, Tae-Young Yoon
Summary: This study reveals the folding pathway of purified human glucose transporter 3 using single-molecule magnetic tweezers. The N-terminal major facilitator superfamily fold forms first and serves as a template for the C-terminal fold. The insertion of hydrophilic transmembrane helices is facilitated by the endoplasmic reticulum membrane protein complex, and final assembly depends on specific lipids.
NATURE CHEMICAL BIOLOGY
(2022)
Article
Multidisciplinary Sciences
Mohamed Ismail, Stephen R. Martin, Roger George, Francesca Houghton, Geoff Kelly, Raphael A. G. Chaleil, Panayiotis Anastasiou, Xinyue Wang, Nicola O'Reilly, Stefania Federico, Dhira Joshi, Hemavathi Nagaraj, Rachel Cooley, Ning Sze Hui, Miriam Molina-Arcas, David C. Hancock, Ali Tavassoli, Julian Downward
Summary: A cyclic peptide inhibitor (cyclo-CRVLIR) was discovered that interacts with the p110 alpha-RBD and blocks its interaction with KRAS. This inhibitor effectively blocks the p110 alpha/KRAS interaction and reduces phospho-AKT levels in several oncogenic KRAS cell lines.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Xander Schaapkens, Joel H. Holdener, Jens Tolboom, Eduard O. Bobylev, Joost N. H. Reek, Tiddo J. Mooibroek
Summary: Designing compounds for the selective molecular recognition of carbohydrates is a challenging task for supramolecular chemists. Macrocyclic compounds incorporating isophtalamide or bisurea spacers have proven effective for selective recognition of all-equatorial carbohydrates. The octa-urea [Pd2L4](4+) cage complex shows excellent selectivity towards n-octyl-alpha-D-Mannoside with inhibited binding of n-octyl glycosides by small anions like NO3- and BF4-.
Article
Chemistry, Multidisciplinary
Stefan Schmeing, Gulshan Amrahova, Katrin Bigler, Jen-Yao Chang, Joseph Openy, Sunit Pal, Laura Posada, Raphael Gasper, Peter't Hart
Summary: The diverse role of the splicing factor PTBP1 in human cells has been extensively studied. It binds RNA through its RNA-recognition motifs and a unique transient helix in the first motif plays a crucial role in RNA binding. This study demonstrates that stapled peptides can mimic the transient secondary structure of PTBP1 and inhibit its allosteric mechanisms, as validated by fluorescence polarization assays and protein crystallography.
Article
Microbiology
Muzaffar Hussain, Christian Kohler, Karsten Becker
Summary: This study demonstrates for the first time a moonlighting function of the enolase protein in S. lugdunensis, which acts as both a metabolic enzyme and an adherence factor. The interaction between SlEno and various extracellular matrix components as well as plasminogen enhances the colonization and invasion ability of S. lugdunensis. These findings suggest that SlEno may serve as a potential vaccine candidate for preventing severe infections caused by this pathogen.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Chemistry, Organic
Faiza Diaba, Gisela Trenchs
Summary: The first violet light-mediated synthesis of gamma- and delta-lactams from N-alkenyl trichloroacetamides is reported in this paper. The reactions are conducted in tetrahydrofuran or 2-methyltetrahydrofuran as the sole solvent without catalysts or additives, under non-anhydrous conditions in an air atmosphere where the solvent serves as the radical initiator.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Feroze Hussain, Sajjad Ahmed, Ashiq Hussain Padder, Qazi Naveed Ahmed
Summary: This study reports a novel and efficient one-pot synthesis method for mixed phosphorotrithioates, which does not require supplementary additives and shows broad applicability.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Hyunjin Oh, Ikyon Kim
Summary: A new 1,2,4-triazole-pyrrolo[1,2-a]pyrazine hybrid system, 6-acylpyrrolo[1,2-a][1,2,4]triazolo[5,1-c]pyrazine, was synthesized using a catalyst-free method. This method involved sequential exposure of pyrrole-2-carbonitrile-derived substrates to DMF-DMA and acyl hydrazide, resulting in the formation of acylated pyrazine and 1,2,4-triazole rings, enabling the installation of various substituents at specific positions on the core skeleton.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Ming Yan, Si-fan Wang, Yong-po Zhang, Jin-zhong Zhao, Zhuo Tang, Guang-xun Li
Summary: Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. The reaction allows for the gram-scale preparation of sulfinamides and the one-pot synthesis of various sulfonyl amides.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Farzaneh Bandehali-Naeini, Zahra Tanbakouchian, Noushin Farajinia-Lehi, Nicolas Mayer, Morteza Shiri, Martin Breugst
Summary: Two tandem catalytic systems were developed for the synthesis of novel 3,4-disubstituted maleimides using the same Ugi adducts. Different maleimide structures can be synthesized using either Pd or Cu catalysis.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Tanya Raghava, Anjan Chattopadhyay, Subhadeep Banerjee, Nivedita Sarkar
Summary: Amine substitution of two ortho fluorine atoms of tetrafluoroterephthalonitrile through SNAr chemistry is easily achievable. But further fluorine substitution is only possible under forcing conditions, yielding valuable fluorophores for bioimaging.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Review
Chemistry, Organic
Anju Chadha, Santosh Kumar Padhi, Selvaraj Stella, Sowmyalakshmi Venkataraman, Thangavelu Saravanan
Summary: Alcohol dehydrogenases are enzymes that use cofactors for oxidation or reduction reactions of alcohols or carbonyl compounds. They are utilized in green chemistry and have applications in the production of pharmaceuticals. Recombinant enzymes have solved the challenge of producing purified enzymes in large quantities. Engineered alcohol dehydrogenases have been used in asymmetric synthesis in industry. Various methods have been established for regenerating expensive cofactors to make the enzymatic process more efficient and economically viable.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)