Structural Biology
Recent submissions
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Identification of autophagy-specific cargo and characterization of b-catenin as LC3/GABARAP interacting protein
(Institute of Cancer Research (University Of London), 2023-07-17)Autophagy is an evolutionary conserved eukaryotic degradation system induced under cellular stress conditions in which cellular components, such as damaged organelles, and aggregated proteins sequestrated through lysomal ... -
Heterologous Assembly of Pleomorphic Bacterial Microcompartment Shell Architectures Spanning the Nano- to Microscale.
(WILEY-V C H VERLAG GMBH, 2023-03-18)Many bacteria use protein-based organelles known as bacterial microcompartments (BMCs) to organize and sequester sequential enzymatic reactions. Regardless of their specialized metabolic function, all BMCs are delimited ... -
Expression of Mitochondrial Cytochrome C Oxidase Chaperone Gene (COX20) Improves Tolerance to Weak Acid and Oxidative Stress during Yeast Fermentation.
(PUBLIC LIBRARY SCIENCE, 2015-10-01)INTRODUCTION: Saccharomyces cerevisiae is the micro-organism of choice for the conversion of fermentable sugars released by the pre-treatment of lignocellulosic material into bioethanol. Pre-treatment of lignocellulosic ... -
Structural basis of catalytic activation in human splicing.
(NATURE PORTFOLIO, 2023-05-25)Pre-mRNA splicing follows a pathway driven by ATP-dependent RNA helicases. A crucial event of the splicing pathway is the catalytic activation, which takes place at the transition between the activated Bact and the ... -
Structural basis of intron selection by U2 snRNP in the presence of covalent inhibitors
(Springer Science and Business Media LLC, 2021-07-23)<jats:title>Abstract</jats:title><jats:p>Intron selection during the formation of prespliceosomes is a critical event in pre-mRNA splicing. Chemical modulation of intron selection has emerged as a route for cancer therapy. ... -
Roles of Elongator Dependent tRNA Modification Pathways in Neurodegeneration and Cancer.
(MDPI, 2018-12-28)Transfer RNA (tRNA) is subject to a multitude of posttranscriptional modifications which can profoundly impact its functionality as the essential adaptor molecule in messenger RNA (mRNA) translation. Therefore, dynamic ... -
A Role for COX20 in Tolerance to Oxidative Stress and Programmed Cell Death in Saccharomyces cerevisiae.
(MDPI, 2019-11-18)Industrial production of bioethanol from lignocellulosic materials (LCM's) is reliant on a microorganism being tolerant to the stresses inherent to fermentation. Previous work has highlighted the importance of a cytochrome ... -
Redox requirements for ubiquitin-like urmylation of Ahp1, a 2-Cys peroxiredoxin from yeast.
(ELSEVIER, 2020-02-01)The yeast peroxiredoxin Ahp1, like related anti-oxidant enzymes in other species, undergoes urmylation, a lysine-directed conjugation to ubiquitin-like modifier Urm1. Ahp1 assembles into a homodimer that detoxifies peroxides ... -
Molecular basis for the bifunctional Uba4-Urm1 sulfur-relay system in tRNA thiolation and ubiquitin-like conjugation.
(WILEY, 2020-10-01)The chemical modification of tRNA bases by sulfur is crucial to tune translation and to optimize protein synthesis. In eukaryotes, the ubiquitin-related modifier 1 (Urm1) pathway is responsible for the synthesis of 2-thiolated ... -
Urm1, not quite a ubiquitin-like modifier?
(SHARED SCIENCE PUBLISHERS OG, 2021-11-01)Ubiquitin related modifier 1 (Urm1) is a unique eukaryotic member of the ubiquitin-fold (UbF) protein family and conserved from yeast to humans. Urm1 is dual-functional, acting both as a sulfur carrier for thiolation of ... -
E2/E3-independent ubiquitin-like protein conjugation by Urm1 is directly coupled to cysteine persulfidation.
(WILEY, 2022-10-17)Post-translational modifications by ubiquitin-like proteins (UBLs) are essential for nearly all cellular processes. Ubiquitin-related modifier 1 (Urm1) is a unique UBL, which plays a key role in tRNA anticodon thiolation ... -
Structural basis of tankyrase activation by polymerization.
(NATURE PORTFOLIO, 2022-12-01)The poly-ADP-ribosyltransferase tankyrase (TNKS, TNKS2) controls a wide range of disease-relevant cellular processes, including WNT-β-catenin signalling, telomere length maintenance, Hippo signalling, DNA damage repair and ... -
Reconstitution of the destruction complex defines roles of AXIN polymers and APC in β-catenin capture, phosphorylation, and ubiquitylation.
(CELL PRESS, 2021-08-19)The Wnt/β-catenin pathway is a highly conserved, frequently mutated developmental and cancer pathway. Its output is defined mainly by β-catenin's phosphorylation- and ubiquitylation-dependent proteasomal degradation, ... -
An integrated model for termination of RNA polymerase III transcription.
(American Association for the Advancement of Science (AAAS), 2022-07-15)RNA polymerase III (RNAPIII) synthesizes essential and abundant noncoding RNAs such as transfer RNAs. Controlling RNAPIII span of activity by accurate and efficient termination is a challenging necessity to ensure robust ... -
A biochemical analysis of human shelterin complexes
(Institute of Cancer Research (University Of London), 2022-08-25)Linear chromosomes present two major challenges, known as the end-replication and end-protection problems. The human shelterin complex is a dynamic assembly of six components, consisting of TRF1, TRF2, RAP1, TIN2, TPP1, ... -
Structural transitions in the GTP cap visualized by cryo-electron microscopy of catalytically inactive microtubules.
(NATL ACAD SCIENCES, 2022-01-11)Microtubules (MTs) are polymers of αβ-tubulin heterodimers that stochastically switch between growth and shrinkage phases. This dynamic instability is critically important for MT function. It is believed that GTP hydrolysis ... -
Structural basis of Ty3 retrotransposon integration at RNA Polymerase III-transcribed genes.
(NATURE PORTFOLIO, 2021-11-30)Retrotransposons are endogenous elements that have the ability to mobilise their DNA between different locations in the host genome. The Ty3 retrotransposon integrates with an exquisite specificity in a narrow window ... -
MCPH1 inhibits Condensin II during interphase by regulating its SMC2-Kleisin interface.
(eLife Sciences Publications, Ltd, 2021-12-01)Dramatic change in chromosomal DNA morphology between interphase and mitosis is a defining features of the eukaryotic cell cycle. Two types of enzymes, namely cohesin and condensin confer the topology of chromosomal DNA ... -
Into Deep Water: Optimizing BCL6 Inhibitors by Growing into a Solvated Pocket.
(AMER CHEMICAL SOC, 2021-12-09)We describe the optimization of modestly active starting points to potent inhibitors of BCL6 by growing into a subpocket, which was occupied by a network of five stably bound water molecules. Identifying potent inhibitors ... -
Discovery and Characterization of a Cryptic Secondary Binding Site in the Molecular Chaperone HSP70.
(MDPI, 2022-01-26)Heat Shock Protein 70s (HSP70s) are key molecular chaperones that are overexpressed in many cancers and often associated with metastasis and poor prognosis. It has proven difficult to develop ATP-competitive, drug-like ...