• In mammals ribonucleotide reductase RNR

  2021-01-30

  

  In mammals, ribonucleotide reductase (RNR) is a unique enzyme that catalyzes the rate-limiting step of de novo synthesis of deoxyribonucleoside triphosphates (dNTPs).7, 8 Mammalian RNR consists of two homodimer subunits: the large catalytic dimer RRM1 and the small regulatory dimer RRM2 or RRM2B. An

• The question remains however as

  2021-01-30

  

  The question remains, however as to the downstream signaling by Epacs that contributes to persistent sensitization of sensory neurons. Activation of the Ras family of GTPases by Epac1 (RapGEF3) or Epac2 (RapGEF4) (Bos, 2003, de Rooij et al., 1998) is linked to a number of downstream signaling effect

• Our data supports the conclusion that the exonuclease

  2021-01-30

  

  Our data supports the conclusion that the exonuclease activity thought to be intrinsic to Artemis is not a component of the Artemis polypeptide. Many possibilities exist to explain the presence of the exonuclease activity in less-pure fractions of Artemis. It is possible that the exonuclease is simp

• The homologous DDRs are composed of an N terminal

  2021-01-29

  

  The homologous DDRs are composed of an N-terminal discoidin homology domain, followed by a sequence of ∼220 amino acids unique to the DDRs, a transmembrane domain, a large juxtamembrane domain, and a conserved cytoplasmic tyrosine kinase domain. In a previous study, we demonstrated that DDR activati

• br Introduction The discoidin domain receptors DDRs DDR and

  2021-01-29

  

  Introduction The discoidin domain receptors (DDRs), DDR1 and DDR2, are unique among the receptor tyrosine kinases (RTKs) in being activated by interaction with the extracellular matrix [1], [2]. Binding to triple-helical collagen is mediated by the receptor extracellular domains that include an N

• dna repair pathways Pyrazolopyrimidines are bioisostere of p

  2021-01-29

  

  Pyrazolopyrimidines are bioisostere of purine exhibit promising antitumor activity by competitively binding to the ATP active site of different kinase dna repair pathways [16,17]. Several compounds of this family were found to induce apoptosis and/or reduce cell proliferation in various solid tumou

• br Acknowledgments Denise Fernandes acknowledges a postdoc

  2021-01-29

  

  Acknowledgments Denise Fernandes acknowledges a postdoc fellowship (SFRH/BPD/34289/2006) from the Portuguese Fundação para a Ciência e Tecnologia (FCT) of the Ministry of Science and Technology of Portugal. This work was supported by the Spanish National Plan for Research (Project Ref. CGL2011-24

• br Genomic and non genomic signaling crosstalk As exemplifie

  2021-01-29

  

  Genomic and non-genomic signaling crosstalk As exemplified in the previous sections, it is evident that the mechanisms of action of estrogen in the various cell targets represent a combination of complex multifactorial processes. Besides the independent genomic and non-genomic pathways described

• br Effects of estrogen on vascular function Atherosclerosis

  2021-01-29

  

  Effects of estrogen on vascular function Atherosclerosis is a chronic inflammatory condition of the vascular wall (Figure 1) that can be converted to an acute clinical event by the induction of plaque rupture or erosion, leading to thrombosis [58]. This perpetuating process is characterized by ph

• br Introduction Increasing investigations show that the

  2021-01-29

  

  Introduction Increasing investigations show that the earthworm extract has various beneficial pharmacological activities, including fibrinolytic [2] and anticoagulative activity [3], anti-inflammatory activity [4], anti-oxidative activity [5], [6], peripheral nerve regeneration [7], bone regenera

• 4 hydroxytamoxifen Opiate withdrawal promotes the activation

  2021-01-28

  

  Opiate withdrawal promotes the activation of the corticotropin-releasing factor (CRF) system, a major coordinator of neuroendocrine and behavioral responses to stressors. For instance, early (8–48 h) morphine withdrawal is associated with increased CRF mRNA expression in the central nucleus of the a

• br Results br Discussion Fetal

  2021-01-28

  

  Results Discussion Fetal development occurs under conditions of low oxygen tension and steady maternal glucose such that physiologic systems including the pancreas are functionally poised in the prenatal state. Postnatally, oxidative metabolism becomes dominant and intermittent feeding exposes

• br Activatable photoacoustic probes Photoacoustic PA

  2021-01-28

  

  Activatable photoacoustic probes Photoacoustic (PA) imaging is a recently developed technique [47]. The imaging approach uses probes that absorb a pulsed laser beam and convert light energy into acoustic signals. It combines the advantages of the high sensitivity offered by optical imaging and th

• Apart from the ET system s role in regulating blood

  2021-01-28

  

  Apart from the ET system's role in regulating blood vessel tone, it is also involved in a variety of cellular processes that are relevant to DR. For example, the ET receptors influence the survival of retinal ganglion worldwide distributors (McGrady et al., 2017; Tonari et al., 2012), development o

• br Acknowledgments The authors acknowledge

  2021-01-28

  

  Acknowledgments The authors acknowledge funding from the National Key Research and Development Program of China (2016YFA0502900) and the National Science Foundation of China (31570188). Compartment Size Regulation Regulation of compartment size is one of the most fundamental issues in biology

14783 records 653/986 page Previous Next First page 上5页 651652653654655 下5页 Last page