Results 71 to 80 of about 46,883 (258)
Clostridial binary toxins: iota and C2 family portraits
Frontiers in Cellular and Infection Microbiology, 2011 There are many pathogenic Clostridium species with diverse virulence factors that include protein toxins. Some of these bacteria, such as C. botulinum, C. difficile, C. perfringens and C. spiroforme, cause enteric problems in animals as well as humans.
Bradley G. Stiles +3 more
doaj +1 more source
Activation of an Estrogen/ Estrogen Receptor Signaling by BIG3 Through Its Inhibitory Effect on Nuclear Transport of PHB2/REA in Breast Cancer [PDF]
, 2009 Breast cancer is known to be a hormone-dependent disease, and estrogens through an interaction with estrogen receptor (ER) enhance the proliferative and metastatic activity of breast tumor cells.
Arata Shimo +10 more
core +2 more sources
Integration of epigenetics into ecotoxicology: insights and fundamental research needs
Biological Reviews, EarlyView.ABSTRACT Epigenetics refers to heritable changes in genome function that occur without direct alterations to the DNA sequence. A multitude of environmental contaminants can influence the epigenetic marks of a genome. Changes of epigenetic marks including DNA methylation, histone modifications, and non‐coding RNAs can induce alterations at the gene ...
Albano Pinto +3 more
wiley +1 more source
Transglutaminase‐mediated cytokeratin modifications implicated in bile‐acid‐induced hepatocyte death
The FEBS Journal, EarlyView.Cholestasis and bile‐acid exposure enhance expression and activity of protein crosslinking enzymes TG1 and TG2 in hepatocytes. Substrate proteins were identified by mass spectrometry using biotin‐labeled peptides (pepK5/pepT26) or amine donor (biotinylated pentylamine; BPA). Crosslinking‐induced aggregation and fragmentation of keratin 18 and 8 (K18/K8)
Hideki Tatsukawa +4 more
wiley +1 more source
PLoS Biology, 2006 Fcgamma receptor (FcgammaR)-mediated phagocytosis of IgG-coated particles is regulated by 3'-phosphoinositides (3'PIs) and several classes of small GTPases, including ARF6 from the ADP Ribosylation Factor subfamily.
Peter Beemiller +2 more
doaj +1 more source
Automodification of N‐terminal serine residues facilitates PARP2 release from DNA
The FEBS Journal, EarlyView.PARP2 is involved in detecting DNA damage and its N‐terminal role is largely unknown. Based on biochemical and biophysical data, our findings suggest that in the presence of HPF1, N‐terminal serine 8 and 73 are enriched in auto‐ADP‐ribosylation. Our results provide insight into the mechanistic role of PARP2 N‐terminus in the PARylation‐dependent ...
Saurabh Singh Dhakar +6 more
wiley +1 more source
Mutational Analysis of the Poly(ADP-Ribosyl)ation Sites of the Transcription Factor CTCF Provides an Insight into the Mechanism of Its Regulation by Poly(ADP-Ribosyl)ation [PDF]
, 2009 Poly(ADP-ribosyl)ation of the conserved multifunctional transcription factor CTCF was previously identified as important to maintain CTCF insulator and chromatin barrier functions.
Chernukhin, Igor +8 more
core +2 more sources
Molecular Microbiology, EarlyView.Mycoplasma pneumoniae pathogenesis relies on its CARDS toxin, which initiates cell binding and subsequent uptake by exploiting sphingomyelin, a key phospholipid found in the host plasma membrane. Maximal cellular entry and full cytotoxic effects are achieved through a synergistic mechanism that involves interaction with the protein coreceptor annexin ...
Alejandra M. Kirkpatrick +1 more
wiley +1 more source
BMC Cell Biology, 2003 Background Phospholipase D (PLD) is involved in many signaling pathways. In most systems, the activity of PLD is primarily regulated by the members of the ADP-Ribosylation Factor (ARF) family of GTPases, but the mechanism of activation of PLD and ARF by ...
Fluharty Eric +8 more
doaj +1 more source
Haploinsufficiency of the Sec7 guanine nucleotide exchange factor gea1 impairs septation in fission yeast. [PDF]
PLoS ONE, 2013 Membrane trafficking is essential to eukaryotic life and is controlled by a complex network of proteins that regulate movement of proteins and lipids between organelles.
Alan M Eckler +13 more
doaj +1 more source