Results 261 to 270 of about 208,982 (285)

ATP‐Powered Signaling Between Artificial and Living Cells

Angewandte Chemie, EarlyView.
We introduce an ATP‐powered artificial cell platform capable of selectively and transiently releasing DNA signals to facilitate communication between artificial and living cells. By engineering these DNA signals, we achieve precise activation of cellular functions and regulated delivery in response to ATP levels.
Soumya Sethi, Charu Sharma, Andreas Walther   +2 more
wiley   +2 more sources

Identifizierung eines Moleküls, das den Abbau der aktivierten Checkpoint‐Kinase‐1 auslöst und Charakterisierung der nicht‐katalytischen Funktionen von Checkpoint‐Kinase‐1 in Tumorzellen

Angewandte Chemie, EarlyView.
In Tumorzellen führt die durch HU induzierte Verlangsamung der DNA‐Replikation zur Aktivierung von CHK1 durch Autophosphorylierung, was einen Zellzyklusarrest bewirkt und die Rekrutierung des DNA‐Reparaturproteins WRN zur Förderung der DNA‐Reparatur und des Zellüberlebens ermöglicht.
Ramy Ashry, Mohamed Abdelsalam, Julia Hausen, Christoph Hieber, Yanira Zeyn, Anne‐Christin Sarnow, Matthias Schmidt, Sara Najafi, Ina Oehme, Matthias Bros, Jia‐Xuan Chen, Mario Dejung, Wolfgang Sippl, Oliver H. Krämer   +13 more
wiley   +1 more source

Identification of a Proteolysis‐Targeting‐Chimera that Addresses Activated Checkpoint Kinase‐1 Reveals its Non‐Catalytic Functions in Tumor Cells

Angewandte Chemie International Edition, EarlyView.
In cancer cells, the induction of DNA replication stress by HU activates CHK1 by autophosphorylation. This leads to cell cycle arrest and recruits the DNA repair protein WRN to promote DNA repair and cell survival. In such cells, addition of the CHK1 inhibitor 9a propels DNA damage and apoptosis.
Ramy Ashry, Mohamed Abdelsalam, Julia Hausen, Christoph Hieber, Yanira Zeyn, Anne‐Christin Sarnow, Matthias Schmidt, Sara Najafi, Ina Oehme, Matthias Bros, Jia‐Xuan Chen, Mario Dejung, Wolfgang Sippl, Oliver H. Krämer   +13 more
wiley   +1 more source

Technological Innovations and Applications of Spatial Transcriptomics in Livestock and Poultry Research

Animal Research and One Health, EarlyView.
The paper is divided into three main sections: a review of the development of spatial transcriptomics technology, its applications in livestock and poultry research, and its future prospects. This article provides an overview of the current state of spatial transcriptomics in animal research, exploring its integration with multiomics technologies as ...
Mingyu Wang, Ao Guo, Lin Zhang, Shengru Wu, Juan Du, Taiyong Yu   +5 more
wiley   +1 more source

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Eukaryotic DNA ligases

Mutation Research/DNA Repair, 1990
Recent studies on eukaryotic DNA ligases are briefly reviewed. The two distinguishable enzymes from mammalian cells, DNA ligase I and DNA ligase II, have been purified to homogeneity and characterized biochemically. Two distinct DNA ligases have also been identified in Drosophila melanogaster embryos.
Alan E. Tomkinson, Tomas Lindahl, Dana D. Lasko   +2 more
openaire   +3 more sources

Mammalian DNA ligases

BioEssays, 1997
AbstractDNA joining enzymes play an essential role in the maintenance of genomic integrity and stability. Three mammalian genes encoding DNA ligases, LIG1, LIG3 and LIG4, have been identified. Since DNA ligase II appears to be derived from DNA ligase III by a proteolytic mechanism, the three LIG genes can account for the four biochemically distinct DNA
David S. Levin, Alan E. Tomkinson
openaire   +3 more sources

DNA Ligases

Current Protocols in Molecular Biology, 2011
AbstractThe DNA ligase enzyme family catalyzes the formation of a phosphodiester bond between juxtaposed 5′‐phosphate and 3′‐hydroxyl termini in duplex DNA. This activity can seal nicks in duplex DNA or join double‐stranded DNA fragments having either blunt or cohesive ends.
Gregory J S, Lohman, Stanley, Tabor, Nicole M, Nichols   +2 more
openaire   +2 more sources

DNA Ligases

Current Protocols in Molecular Biology, 1989
AbstractDNA ligases catalyze the formation of phosphodiester bonds between juxtaposed 5' phosphate and a 3'‐hydroxyl terminus in duplex DNA. This activity can repair single‐stranded nicks in duplex DNA and join duplex DNA restriction fragments having either blunt ends or homologous cohesive ends. Two ligases are used for nucleic acid research and their
Nicole M. Nichols, Gregory J. S. Lohman, Stanley Tabor   +2 more
openaire   +3 more sources

A DNA metalloenzyme with DNA ligase activity

Nature, 1995
Single-stranded DNA can fold into well-defined sequence-dependent tertiary structures that specifically bind a variety of target molecules, raising the possibility that some folded single-stranded DNAs might exhibit catalytic activities similar to those of ribozymes and protein enzymes.
Bernard Cuenoud, Jack W. Szostak
openaire   +2 more sources

DNA ligases in the repair and replication of DNA

Mutation Research/DNA Repair, 2000
DNA ligases are critical enzymes of DNA metabolism. The reaction they catalyse (the joining of nicked DNA) is required in DNA replication and in DNA repair pathways that require the re-synthesis of DNA. Most organisms express DNA ligases powered by ATP, but eubacteria appear to be unique in having ligases driven by NAD(+).
Dale B. Wigley, Martin R. Singleton, David J. Timson   +2 more
openaire   +3 more sources