Results 61 to 70 of about 643,096 (374)

A Minimum Principle in Codon-Anticodon Interaction

, 2011
Imposing a minimum principle in the framework of the so called crystal basis model of the genetic code, we determine the structure of the minimum set of anticodons which allows the translational-transcription for animal mitochondrial code.
Sciarrino, A., Sorba, P.
core   +3 more sources

Digging into acceptor splice site prediction : an iterative feature selection approach [PDF]

, 2004
Feature selection techniques are often used to reduce data dimensionality, increase classification performance, and gain insight into the processes that generated the data.
A.I. Blum, A.K. Jain, C. Mathé, D. Mladenić, E. Alpaydin, G.R. Harik, H. Mühlenbein, I. Guyon, I. Guyon, J. Weston, M. Kudo, M. Pertea, P. Larrañaga, R. Kohavi, R.O. Duda, S. Degroeve, T. Joachims, X. Zhang, Y. Saeys   +18 more
core   +2 more sources

A Search for Interstellar Pyrimidine [PDF]

Mon.Not.Roy.Astron.Soc.345:650,2003, 2003
We have searched three hot molecular cores for submillimeter emission from the nucleic acid building-block pyrimidine. We obtain upper limits to the total pyrimidine (beam-averaged) column densities towards Sgr B2(N), Orion KL and W51 e1/e2 of 1.7E+14 cm^{-2}, 2.4E+14 cm^{-2} and 3.4E+14 cm^{-2}, respectively.
arxiv   +1 more source

Activation of NADPH oxidase by purine and pyrimidine nucleotides involves G proteins and is potentiated by chemotactic peptides.

Biochemical Journal, 1989
Human neutrophils and HL-60 leukaemic cells possess an NADPH oxidase which catalyses superoxide (O2-) formation and is activated by the chemotactic peptide, N-formyl-L-methionyl-L-leucyl-L-phenylalanine (fMet-Leu-Phe).
Roland Seifert, R. Burde, Günter Schultz   +2 more
semanticscholar   +1 more source

Respiratory complex I‐mediated NAD+ regeneration regulates cancer cell proliferation through the transcriptional and translational control of p21Cip1 expression by SIRT3 and SIRT7

Molecular Oncology, EarlyView.
NAD+ regeneration by mitochondrial complex I NADH dehydrogenase is important for cancer cell proliferation. Specifically, NAD+ is necessary for the activities of NAD+‐dependent deacetylases SIRT3 and SIRT7, which suppress the expression of p21Cip1 cyclin‐dependent kinase inhibitor, an antiproliferative molecule, at the translational and transcriptional
Masato Higurashi, Kazunori Mori, Hidetsugu Nakagawa, Momoko Uchida, Fumihiro Ishikawa, Motoko Shibanuma   +5 more
wiley   +1 more source

Beyond Structure: Methylation Fine‐Tunes Stability and Folding Kinetics of bcl2Mid G‐Quadruplex

Angewandte Chemie, EarlyView.
The introduction of a single 5‐methylcytosine into a G‐rich sequence originating from the B‐cell lymphoma 2 (BCL2) gene promoter affects both the folding kinetics and thermodynamics of the two G4 structures and thus plays a crucial role in regulating G4 folding pathways, which has significant implications for the control of gene expression.
Nataša Medved, Mirko Cevec, Uroš Javornik, Jurij Lah, San Hadži, Janez Plavec   +5 more
wiley   +2 more sources

Bacillus anthracis edema factor substrate specificity: evidence for new modes of action [PDF]

, 2012
Since the isolation of Bacillus anthracis exotoxins in the 1960s, the detrimental activity of edema factor (EF) was considered as adenylyl cyclase activity only.
Agrawal, Altaweel, Basler, Bauche, Bell, Benson, Beste, Bock, Bond, Boyd, Bradley, Brown, Burhenne, Carbonetti, Carbonetti, Carson-Walter, Casteel, Christensen, Christensen, Confer, Copsel, Crawford, Crowe, Cunningham, Dalkas, Defer, Deuquet, Ding, Drum, Duesbery, Feld, Firoved, Friedlander, Fu, Fukuhara, Gaion, Gille, Gordon, Göttle, Hammerschmidt, He, Helfman, Hong, Ivarsson, Jernigan, Johnson, Katayama, Katayama, Kaupp, Kintzer, Klimpel, Laine, Larabee, Larabee, Leppla, Liu, Martin Göttle, McDonough, Milne, Mogridge, Mogridge, Newton, Newton, Newton, Newton, Newton, Oncu, O´Brien, Park, Petosa, Pezard, Postea, Puhar, Roland Seifert, Santelli, Scobie, Scobie, Scorpio, Shapiro, Shen, Shirshev, Soelaiman, Stefan Dove, Sun, Tamayo, Taylor, Taylor, Tesmer, Thomas, Tournier, Vitale, Vitale, Vojtova, Yeager, Zong   +94 more
core   +2 more sources

Identifying prognostic targets in metastatic prostate cancer beyond AR

FEBS Open Bio, EarlyView.
Genome‐wide functional screens combined with a large gene expression database and clinical outcomes can identify new therapeutic vulnerabilities in prostate cancer. Eight potentially druggable targets demonstrated strong dependency in cell lines, were associated with worse prognosis clinically, and showed evidence of protein expression in prostate ...
Emily Feng, Eric Feng, Tracy Berg, Isabella S. Nguyen, Lilac G. Nguyen, William Chen, Meng Zhang, David Quigley, Marina Sharifi, Haolong Li, Ilsa Coleman, Peter S. Nelson, Martin Sjöström, Shuang G. Zhao   +13 more
wiley   +1 more source

Orotic Aciduria [PDF]

, 2018
Orotic acid is an intermediate found in the pathway for pyrimidine synthesis. The mitochondrial enzyme dihydroorotate dehydrogenase (DHODH) catalyzes the production of orotic acid by the conversion of the compound dihydroorotate to orotic acid.
Fonteh, Aliah L
core   +1 more source

X-ray photodesorption and proton destruction in protoplanetary disks: pyrimidine [PDF]

Monthly Notices of the Royal Astronomical Society, 08/2013, Volume 433, Issue 4, p.3440-3452, 2013
The organic compounds HCN and C2H2, present in protoplanetary disks, may react to form precursor molecules of the nucleobases, such as the pyrimidine molecule, C4H4N2. Depending on the temperature in a given region of the disk, molecules are in the gas phase or condensed onto grain surfaces.
arxiv   +1 more source