Results 121 to 130 of about 6,529,404 (392)

A cellular system to study responses to a collision between the transcription complex and a protein‐bound nick in the DNA template

FEBS Letters, EarlyView.
We present the cellular transcription‐coupled Flp‐nick system allowing the introduction of a Top1‐mimicking cleavage complex (Flpcc) at a Flp recognition target site within a controllable LacZ gene. LacZ transcription leads to the collision of RNA polymerase II (RNAPII) with Flpcc, and this causes RNAPII stalling, ubiquitination, and degradation.
Petra Herring, Morten Roedgaard, Camilla Myrup Holst, Helene Christensen, Birgitta R. Knudsen, Lotte Bjergbaek, Anni Hangaard Andersen   +6 more
wiley   +1 more source

The effects of intrinsic noise on the behaviour of bistable cell regulatory systems under quasi-steady state conditions

, 2015
We analyse the effect of intrinsic fluctuations on the properties of bistable stochastic systems with time scale separation operating under1 quasi-steady state conditions.
Fabian Spill, Feynman R. P., Goldenfeld N., Kampen N. G. V., Kauffman S. A., Keener J., Pilar Guerrero, Rathinam M., Roberto de la Cruz, Tomás Alarcón, Vlachos D. G., Yao G.   +11 more
core   +1 more source

Requirements for distinct steps of phospholipase Cgamma2 regulation, membrane-raft-dependent targeting and subsequent enzyme activation in B-cell signalling.

Biochemical Journal, 2003
Studies of PLCgamma (phospholipase Cgamma) have identified a number of regulatory components required for signalling; however, molecular mechanisms and the relationship between events leading to translocation and an increase of substrate hydrolysis have ...
Rosie Rodriguez, M. Matsuda, A. Storey, M. Katan   +3 more
semanticscholar   +1 more source

STAT3 expression is reduced in cardiac pericytes in HFpEF and its loss reduces cellular adhesion and induces pericyte senescence

FEBS Letters, EarlyView.
Heart failure with preserved ejection fraction (HFpEF) accounts for half of the heart failure cases. It is characterised by microvascular dysfunction, associated with reduced pericyte coverage and diminished STAT3 expression in pericytes. Loss of STAT3 impairs pericyte adhesion, promotes senescence, and activates a pro‐fibrotic gene program.
Leah Rebecca Vanicek, Ariane Fischer, Mariano Ruz Jurado, Anita Tamiato, Tara Procida‐Kowalski, Jochen Wilhelm, Dennis Hecker, Maximilian Merten, Felicitas Escher, Badder Kattih, Valentina Puntmann, David John, Marcel H. Schulz, Eike Nagel, Stefanie Dimmeler, Guillermo Luxán   +15 more
wiley   +1 more source

Enzyme promiscuity prediction using hierarchy-informed multi-label classification [PDF]

arXiv, 2020
As experimental efforts are costly and time consuming, computational characterization of enzyme capabilities is an attractive alternative. We present and evaluate several machine-learning models to predict which of 983 distinct enzymes, as defined via the Enzyme Commission, EC, numbers, are likely to interact with a given query molecule.
arxiv  

Cytoplasmic delivery of antibodies through grafting a functional single complementarity‐determining region loop

FEBS Letters, EarlyView.
We achieved cytoplasmic delivery of non‐cell‐penetrating IgGs by grafting a single functional complementarity‐determining region 1 (CDR1) from the light chain variable region (VL) of the cell‐internalizable 3D8 antibody. The engineered IgG acquired cell‐penetrating ability while maintaining antigen affinity, highlighting CDR1 grafting as a promising ...
Yerin Jeon, Juho Choi, Youngin Roh, Eunbin Lee, Luigie Villamante, Myung‐Hee Kwon   +5 more
wiley   +1 more source

Comparison of different approaches to single-molecule imaging of enhanced enzyme diffusion [PDF]

arXiv, 2020
Enzymes have been shown to diffuse faster in the presence of their reactants. Recently, we revealed new insights into this process of enhanced diffusion using single-particle tracking (SPT) with total internal reflection fluorescence (TIRF) microscopy.
arxiv  

Crucial involvement of xanthine oxidase in the intracellular signalling networks associated with human myeloid cell function [PDF]

, 2014
Xanthine oxidase (XOD) is an enzyme which plays a central role in purine catabolism by converting hypoxanthine into xanthine and then further into uric acid.
Abooali, Maryam, Coughlan, Karen, Gibbs, Bernhard F., Lall, Gurprit S., Lall, Harjinder S., Sumbayev, Vadim V.   +5 more
core   +1 more source

Structural Elements Contribute to the Calcium/Calmodulin Dependence on Enzyme Activation in Human Endothelial Nitric-oxide Synthase*

Journal of Biological Chemistry, 2003
Two regions, located at residues 594–606/614–645 and residues 1165–1178, are present in the reductase domain of human endothelial nitric-oxide synthase (eNOS) but absent in its counterpart, inducible nitric-oxide synthase (iNOS).
Pei-Feng Chen, Kenneth K. Wu
semanticscholar   +1 more source

Autophagy in cancer and protein conformational disorders

FEBS Letters, EarlyView.
Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley   +1 more source