Results 51 to 60 of about 643,096 (374)

Chemical investigation of light induced DNA bipyrimidine damage and repair [PDF]

, 2011
In all organisms, genetic information is stored in DNA and RNA. Both of these macromolecules are damaged by many exogenous and endogenous events, with UV irradiation being one of the major sources of damage.
Carell, Thomas, Heil, Korbinian, Pearson, David   +2 more
core   +1 more source

Microsporidia: Why Make Nucleotides if You Can Steal Them? [PDF]

PLoS Pathogens, 2016
Microsporidia are strict obligate intracellular parasites that infect a wide range of eukaryotes including humans and economically important fish and insects.
Paul Dean, Robert P Hirt, T Martin Embley   +2 more
doaj   +1 more source

DNA strand breaks induced by near-zero-electronvolt electron attachment to pyrimidine nucleotides.

Proceedings of the National Academy of Sciences of the United States of America, 2006
To elucidate the mechanism of DNA strand breaks by low-energy electrons (LEE), theoretical investigations of the LEE attachment-induced C(5')-O(5') sigma bond breaking of pyrimidine nucleotides (5'-dCMPH and 5'-dTMPH) were performed by using the B3LYP ...
Xiaoguang Bao, Jing Wang, J. Gu, J. Leszczynski   +3 more
semanticscholar   +1 more source

Structure and mechanism of human DNA polymerase η [PDF]

, 2010
The variant form of the human syndrome xeroderma pigmentosum (XPV) is caused by a deficiency in DNA polymerase eta (Pol eta), a DNA polymerase that enables replication through ultraviolet-induced pyrimidine dimers.
A Alt, A Mees, A Nicholls, A Scrima, AJ McCoy, AJ McCoy, Alan R. Lehmann, AR Lehmann, AT Brünger, BC Broughton, C Masutani, C Masutani, C Vonrhein, Chikahide Masutani, Christian Biertümpfel, DE Brash, DF Jarosz, DG Vassylyev, DV Bugreev, E Bassett, E Glick, F Wang, Fumio Hanaoka, H Inui, H Ling, H Ling, H Ling, H Park, H Saribasak, IW Davis, J Bauer, J Di Lucca, J Trincao, J Yao, Jae Young Lee, JH Min, K Sugasawa, L Jia, L Rey, L Wang, M Tanioka, Mark Gregory, MJ McIlwraith, P Emsley, R Kusumoto, R Kusumoto, RC Wilson, RE Johnson, RJ Kokoska, S Broyde, S Creighton, S Lone, Santiago Ramón-Maiques, SD McCulloch, SG Chaney, T Hishida, T Kawamoto, TC Terwilliger, W Kabsch, W Yang, W Yang, WA Hendrickson, Wei Yang, Y Li, Ye Zhao, Yuji Kondo, Z Otwinowski   +66 more
core   +2 more sources

Biochemical characterization of uracil phosphoribosyltransferase from Mycobacterium tuberculosis. [PDF]

PLoS ONE, 2013
Uracil phosphoribosyltransferase (UPRT) catalyzes the conversion of uracil and 5-phosphoribosyl-α-1-pyrophosphate (PRPP) to uridine 5'-monophosphate (UMP) and pyrophosphate (PP(i)). UPRT plays an important role in the pyrimidine salvage pathway since UMP
Anne Drumond Villela, Rodrigo Gay Ducati, Leonardo Astolfi Rosado, Carlos Junior Bloch, Maura Vianna Prates, Danieli Cristina Gonçalves, Carlos Henrique Inacio Ramos, Luiz Augusto Basso, Diogenes Santiago Santos   +8 more
doaj   +1 more source

Lead poisoning. Further observations on erythrocyte pyrimidine-nucleotidase deficiency and intracellular accumulation of pyrimidine nucleotides.

Journal of Clinical Investigation, 1977
Pyrimidine nucleotides, detectable in normal erythrocytes only in trace quantities if at all, were found to comprise 7-80% of the intracellular nucleotide pools in nine subjects with severe lead over-burden.
D. Paglia, W. N. Valentine, K. Fink
semanticscholar   +1 more source

Genomic organization of nucleolin gene in carp fish: Evidence for several genes [PDF]

, 2006
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000200017&lng=es&nrm=isoThe protein nucleolin, functionally involved in the main steps of ribosome biogenesis, is codified by a single copy gene in mammals.
Alvarez, Marco, Molina, Alfredo, Navarro, Cristina, Quezada, Claudia, San Martín, Rody, Vera, Ines   +5 more
core   +2 more sources

Purine Nucleotide Availability Regulates mTORC1 Activity through the Rheb GTPase

Cell Reports, 2017
Pharmacologic agents that interfere with nucleotide metabolism constitute an important class of anticancer agents. Recent studies have demonstrated that mTOR complex 1 (mTORC1) inhibitors suppress de novo biosynthesis of pyrimidine and purine nucleotides.
Natasha Emmanuel, Shoba Ragunathan, Qin Shan, Fang Wang, Andreas Giannakou, Nanni Huser, Guixian Jin, Jeremy Myers, Robert T. Abraham, Keziban Unsal-Kacmaz   +9 more
doaj   +1 more source

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

Remote Control of Eukaryotic Gene Expression by a Modular Ultrasound‐Responsive RNA Toolkit

Angewandte Chemie, EarlyView.
A modular RNA‐based sonogenetic toolkit enables remote control of gene expression in eukaryotes by releasing small molecule modulators from ultrasound‐responsive carriers. These modulators activate engineered mRNA elements such as riboswitches, leading to tunable protein expression.
Fahimeh Charbgoo, Aman Ishaqat, Junlin Chen, Fabian Wiertz, Adrian Kuzmanović, Matthias Bartneck, Fabian Kiessling, Andreas Herrmann   +7 more
wiley   +2 more sources