Results 91 to 100 of about 271,229 (377)

Occurrence and a possible mechanism of penetration of natural killer cells into k562 target cells during the cytotoxic interaction [PDF]

, 1995
The cytotoxic interaction between cloned human Natural Killer (NK) cells and K562 target cells was studied using confocal laser scanning microscopy (CLSM) and conventional fluorescence microscopy.
de Grooth, B.G., Figdor, Carl, Greve, Jan, Radosevic, K., Radosevic, Katarina, Segers-Nolten, Gezina M.J., van Leeuwen, Anne Marie T.   +6 more
core   +3 more sources

An Engineered PfAgo with Wide Catalytic Temperature Range and Substrate Spectrum

Advanced Science, EarlyView.
This work presents a strategy for engineering thermophilic Ago proteins to obtain wide catalytic temperature range and broad substrate spectrum. This strategy is applied to engineer PfAgo and TtdAgo, and the biochemical properties of the engineered PfAgo are systematically characterized. The study further elucidates the structural differences involved.
Longyu Wang, Xiaochen Xie, Fuyong Huang, Qiang Wei, Tianxin Cai, Na Yu, Shi Chen, Fei Wang, Wanping Chen, Chin‐yu Chen, Chunhua Li, Lixin Ma   +11 more
wiley   +1 more source

The Iron–Sulfur Cluster of Bacterioferritin‐Associated Ferredoxin (Bfd): a “Biological Fuse” that Prevents Oxidative Damage to Cells?

Angewandte Chemie, EarlyView.
When cellular iron is low, bacterioferritin (Bfr) releases its stored iron through a reductive process dependent on the [2Fe–2S] ferredoxin Bfd. Why accessing stored iron should depend on an iron‐requiring protein when iron is scarce is unclear. Here, we show that the Bfd [2Fe–2S] cluster is sensitive to oxidative stress, suggesting that it may act as ...
Justin M. Bradley, Aiden M. Carter, Zinnia Bugg, Simon C. Andrews, Nick E. Le Brun   +4 more
wiley   +2 more sources

Development of a molecular method for the rapid screening and identification of the three functionally relevant polymorphisms in the human TAS2R38 receptor gene in studies of sensitivity to the bitter taste of PROP [PDF]

, 2015
The objective of this work was to develop a rapid screening method to identify the three single nucleotide polymorphisms (SNPs) in the TAS2R38 gene, with the aim of providing a significant contribution to studies designed to assess sensitivity to the ...
Atzori, E, Orrù, R, Padiglia, A
core   +2 more sources

Small RNA Toxin‐Assisted Evolution of GC‐Preferred ErCas12a for Enhanced Genome Targeting Range

Advanced Science, EarlyView.
ErCas12a is engineered to target GC‐rich PAMs using a small RNA toxin‐aided positive screening system. The resulting variant, enErCas12a, exhibits an expanded PAM profile and facilitates efficient gene editing in both bacterial and mammalian cells, while preserving high targeting specificity for both canonical and non‐canonical PAM targets.
Zehua Chen, Junyuan Xue, Ziying Wang, Jinyuan Sun, Yinglu Cui, Tong Zhu, Huaiyi Yang, Ming Li, Bian Wu   +8 more
wiley   +1 more source

Structural and biochemical basis for development of influenza virus inhibitors targeting the PA endonuclease. [PDF]

PLoS Pathogens, 2012
Emerging influenza viruses are a serious threat to human health because of their pandemic potential. A promising target for the development of novel anti-influenza therapeutics is the PA protein, whose endonuclease activity is essential for viral ...
Rebecca M DuBois, P Jake Slavish, Brandi M Baughman, Mi-Kyung Yun, Ju Bao, Richard J Webby, Thomas R Webb, Stephen W White   +7 more
doaj   +1 more source

Identification of novel components of Trypanosoma brucei editosomes [PDF]

, 2003
The editosome is a multiprotein complex that catalyzes the insertion and deletion of uridylates that occurs during RNA editing in trypanosomatids. We report the identification of nine novel editosome proteins in Trypanosoma brucei.
Carmean, Nicole, Ernst, Nancy L, Panigrahi, Aswini K, Salavati, Reza, Schnaufer, Achim, Stuart, Kenneth, Wang, Bingbing   +6 more
core   +2 more sources

The DNA repair endonuclease Mus81 facilitates fast DNA replication in the absence of exogenous damage

Nature Communications, 2015
The Mus81 endonuclease resolves recombination intermediates and mediates cellular responses to exogenous replicative stress. Here, we show that Mus81 also regulates the rate of DNA replication during normal growth by promoting replication fork ...
Haiqing Fu, Melvenia M. Martin, M. Regairaz, Liang Huang, Yang You, C. Lin, Michael C. Ryan, Ryangguk Kim, T. Shimura, Y. Pommier, M. Aladjem   +10 more
semanticscholar   +1 more source

The mechanisms of action ofE.coliendonuclease III and T4 UV endonuclease (endonuclease V) at AP sites

Nucleic Acids Research, 1988
Treatment of DNA containing AP sites with either T4 UV endonuclease or with E. coli endonuclease III followed by a human class II AP endonuclease releases a putative beta-elimination product. This result suggests that both the T4 endonuclease and E. coli endonuclease III class I AP endonucleases catalyze phosphodiester bond cleavage via a lyase- rather
Joon Kim, Stuart Linn
openaire   +4 more sources

Plasma DNMT1 Activity for Assessing Tumor Burden and Predicting Neoadjuvant Therapy Response in Breast Cancer

Advanced Science, EarlyView.
In this work, a detection method is presented for the activity of plasma DNA methyltransferase 1 (DNMT1), namely DNMT1 Identification by Variable Activity (DIVA). DIVA can detect plasma DNMT1 at levels as low as 10−7 U mL−1, also it successfully evaluated tumor burden and predicted the neoadjuvant therapy responses of breast cancer patients.
Yingran Wang, Guozhi Zhang, Zhizhao Zhang, Mengsi Zhang, Jiao Chen, Ke Wang, Lu Liu, Jing Bao, Ming Chen, Xiaowei Qi, Mingxuan Gao   +10 more
wiley   +1 more source