• An Ubl modification requires several steps that

  2021-01-06

  

  An Ubl modification requires several steps that are catalyzed by three enzymes, referred to as E1 (activating enzyme), E2 (conjugation enzyme), and E3 (ligase). The SUMO E1 is a heterodimer of SAE1 and Uba2 (also known as SAE2). In brief, an Ubl is first activated by E1 through ATP hydrolysis and fo

• In general cellular senescence is

  2021-01-06

  

  In general, cellular senescence is considered a programmed response to stress that can be activated by oxidative stress, irradiation or action of substances or drugs. These stressors cause DNA damage and, through the action of specific proteins (p53 and p21), lead to cell senescence (di Fagagna, 200

• br Acknowledgements The authors are supported by National

  2021-01-06

  

  Acknowledgements The authors are supported by National Institutes of Health grants (CA162804, CA92584, and CA13499 to DJC and CA166677 to BPPC) and Cancer Prevention and Research Institute of Texas (RP110465 to DJC). The cellular response to DNA double-strand break (DSB) formation is an essent

• In general the DNMT encompass three different structural

  2021-01-06

  

  In general, the DNMT encompass three different structural regions: N-terminal regulatory domain, C-terminal catalytic domain and a central linker region (). The N-terminal regulatory domain is particularly implicated in determining subcellular localization of the DNMT and in allocating unmethylated

• The archaea are a group of microorganisms and many

  2021-01-06

  

  The archaea are a group of microorganisms, and many belong to extremophiles, living in extreme environments, such as those with high temperatures [6], [7]. Methanocaldococcus jannaschii is a methane-producing archaea [8]. It grows at pressures of up to more than 200atm and at an optimum temperature

• To examine the influence of aromatic motifs

  2021-01-06

  

  To examine the influence of aromatic motifs on the bridging lysine esters we analysed DNA alkylating activity of the set of compounds 1–6. The lysine derivatives were chosen as it is relatively easy to prepare different esters and thereby study the impact of different groups on the reactivity toward

• Dihydrotestosterone Autophagy is a dynamic process that

  2021-01-05

  

  Autophagy is a dynamic process that primarily involves autophagosome formatting and lysosomal degradation, and these processes are controlled by autophagy-related genes (Atg) (Klionsky et al., 2012). The related protein SQSTM1/p62 (sequestosome 1) importantly serves as a signalling director in sever

• To better understand the mechanism of

  2021-01-05

  

  To better understand the mechanism of splicing in CLCN1, we began by constructing a minigene spanning exons 5–7 of CLCN1, resulting in the synthetic CLCN1 (5–7) minigene. We also established a new assay using real-time reverse transcription (RT)-PCR, which can distinguish between splicing variants b

• Verapamil a calcium channel blocker used clinically as a cor

  2021-01-05

  

  Verapamil, a calcium channel blocker used clinically as a coronary vasodilator, was amongst the first compounds identified that could reverse MDR and potentiate the effects of MDR1 substrates such as vincristine [15], [16]. Verapamil, along with a number of other MDR1 blockers, have proved largely u

• Although the presence of calcium

  2021-01-05

  

  Although the presence of calcium in RHA-P active site is confirmed by the homology modeling, some additional observations can be made following the metal depletion and reconstitution experiments performed on RHA-Phis. EDTA-treated RHA-Phis recovers its activity in the presence of divalent cations su

• br When Does Activity with

  2021-01-05

  

  When Does Activity with Alternative Substrates Depend on Neutral Drift? In a final scenario, the alternative reaction catalyzed by an enzyme might have no significant (positive or negative) effects on the system fitness, and thus it would be invisible to natural selection and essentially subject

• The important role of miRNAs in cellular differentiation

  2021-01-05

  

  The important role of miRNAs in cellular differentiation has been proposed recently. Previous studies had suggested roles for different miRNAs during osteogenesis [20]. Certain miRNAs could promote osteoblast differentiation, such as miR-194 [20], whereas others could inhibit the cell differentiatio

• In conclusion high methylation levels

  2021-01-05

  

  In conclusion, high methylation levels of CDKL2 were observed both in HCC cell lines and tissues, which showed a negative association with mRNA expression. Moreover, treatment with demethylation agent in HCC cell lines could upregulate CDKL2 mRNA expression. The discovery of the epigenetic modificat

• br Acknowledgement AM and SK thank

  2021-01-05

  

  Acknowledgement AM and SK thank ICMR, New Delhi, India for the financial assistance BIC/12(32)/2012. SK is the recipient of JRF from the project. RK and GJ thank Bristol-Myer Squibb (Grant # 34003085), USA for financial support. Introduction Proliferating Cell Nuclear Antigen (PCNA) is a high

• In humans individual differences in prefrontal dopamine are

  2021-01-05

  

  In humans, individual differences in prefrontal dopamine are partially caused by the Val158Met single-nucleotide polymorphism on the catechol-O-methyltransferase gene (COMT). This gene controls activity of the COMT enzyme, which degrades extracellular catecholamines including dopamine. The Val varia

16044 records 752/1070 page Previous Next First page 上5页 751752753754755 下5页 Last page