Results 51 to 60 of about 408,201 (235)

Machines on Genes: Enzymes that Make, Break and Move DNA and RNA [PDF]

, 2010
As the vital information repositories of the cell, the nucleic acids DNA and RNA pose many challenges as enzyme substrates. To produce, maintain and repair DNA and RNA, and to extract the genetic information that they encode, a battery of remarkable ...
Bates, Belousoff, Ben F. Luisi, Lilley, Marshall, Olorunniji, Rice, Richard P. Bowater, Sherratt, Smith, Szczelkun, Tomlinson, W. Marshall Stark, Weinzierl   +13 more
core   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Structure Determination of Catalytic RNAs and Investigations of Their Metal Ion-Binding Properties

CHIMIA, 2005
Naturally occurring RNA molecules exhibit many unexpected and fascinating properties in living cells such as protein synthesis and transport, regulation of metabolic functions, and catalytic cleavage reactions.
Michèle C. Erat, Roland K.O. Sigel
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

RNA folding and catalysis mediated by iron (II). [PDF]

PLoS ONE, 2012
Mg²⁺ shares a distinctive relationship with RNA, playing important and specific roles in the folding and function of essentially all large RNAs. Here we use theory and experiment to evaluate Fe²⁺ in the absence of free oxygen as a replacement for Mg²⁺ in
Shreyas S Athavale, Anton S Petrov, Chiaolong Hsiao, Derrick Watkins, Caitlin D Prickett, J Jared Gossett, Lively Lie, Jessica C Bowman, Eric O'Neill, Chad R Bernier, Nicholas V Hud, Roger M Wartell, Stephen C Harvey, Loren Dean Williams   +13 more
doaj   +1 more source

Functional plasticity of antibacterial EndoU toxins. [PDF]

, 2018
Bacteria use several different secretion systems to deliver toxic EndoU ribonucleases into neighboring cells. Here, we present the first structure of a prokaryotic EndoU toxin in complex with its cognate immunity protein.
Eschenfeldt, William H, Goulding, Celia W, Hayes, Christopher S, Joachimiak, Andrzej, Jones, Allison M, Koskiniemi, Sanna, Low, David A, Michalska, Karolina, Nguyen, Josephine Y, Quan Nhan, Dinh, Stols, Lucy M, Willett, Julia LE   +11 more
core   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Snf2 family ATPases and DExx box helicases:differences and unifying concepts from high-resolution crystal structures [PDF]

, 2006
Proteins with sequence similarity to the yeast Snf2 protein form a large family of ATPases that act to alter the structure of a diverse range of DNA–protein structures including chromatin. Snf2 family enzymes are related in sequence to DExx box helicases,
Aasland, Ahne, Akhtar, Andrew Flaus, Asturias, Auble, Auble, Auble, Bazett-Jones, Becker, Beerens, Bouazoune, Boyer, Boyer, Briggs, Caruthers, Corona, Cote, Dasgupta, Davis, Deaconescu, Dhalluin, Dumont, Durr, Eisen, Fan, Fitzgerald, Flaus, Flaus, Goldmark, Gorbalenya, Grune, Harald Dürr, Havas, Hishida, Ito, Jaskelioff, Kagalwala, Karl-Peter Hopfner, Kawaoka, Kim, Laurent, Laurent, Levin, Levin, Lia, Mahdi, Mannhaupt, Mizuguchi, Morillon, Myong, Peterson, Petukhova, Petukhova, Phelan, Pray-Grant, Quinn, Richmond, Ristic, Saha, Saha, Schild, Sengoku, Serebrov, Shen, Shinohara, Simic, Sims, Singleton, Singleton, Singleton, Smith, Soultanas, Sprouse, Stanley, Studitsky, Subramanya, Sukhodolets, Svejstrup, Swagemakers, Tai, Thoma, Tom Owen-Hughes, Tran, Tsukiyama, van den Boom, van Gool, Van Komen, Velankar, Wang, Whitehouse, Woudstra, Yu, Yu, Zhang, Zofall   +95 more
core   +4 more sources

Function‐driven design of a surrogate interleukin‐2 receptor ligand

FEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang, Zelin Cheng, Teng Li, Fulian Wang, Liangminghui Zhang, Xiuxiu He, Lili Liu, Wei Wang, Aibin Liang, Guang Yang   +9 more
wiley   +1 more source

Origin & influence of autocatalytic reaction networks at the advent of the RNA world

RNA Biology
Research on the origin of life investigates the transition from abiotic chemistry to the emergence of biology, with the ‘RNA world hypothesis’ as the leading theory. RNA’s dual role in storage and catalysis suggests its importance in this narrative.
Stephen A. Zorc, Raktim N. Roy
doaj   +1 more source