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4772 results sorted by

The Ca2+ channel alpha 2delta -1 subunit determines Ca2+ current kinetics in skeletal muscle but not targeting of alpha 1S or EC coupling

Auxiliary channel subunits regulate membrane expression and modulate current properties of voltage-activated Ca(2+) channels and thus are involved in numerous important cell functions, including muscle contraction. Whereas the importance of the...
Authors: Obermair GJ, Kugler G, Baumgartner S, Tuluc P, Grabner M and Flucher BE

Cytoplasmic mislocalization of p27Kip1 protein is associated with constitutive phosphorylation of Akt or protein kinase B and poor prognosis in acute myelogenous leukemia

Cyclin-dependent kinase inhibitor p27Kip1 functions at the nuclear level by binding to cyclin E/cyclin-dependent kinase-2. It was shown that Akt or protein kinase B (Akt/PKB)-dependent phosphorylation of p27Kip1 led to the cytoplasmic mislocalization...
Authors: Min YH, Cheong JW, Kim JY, Eom JI, Lee ST, Hahn JS, Ko YW and Lee MH

Cholesterol is required for endocytosis and endosomal escape of adenovirus type 2

The species C adenovirus type 2 (Ad2) and Ad5 bind the coxsackievirus B Ad receptor and alphav integrin coreceptors and enter epithelial cells by clathrin-mediated endocytosis. This pathway is rapid and efficient. It leads to cell activation and the...
Authors: Imelli N, Meier O, Boucke K, Hemmi S and Greber UF

Ultraviolet irradiation induces SMAD7 via induction of transcription factor AP-1 in human skin fibroblasts

Smad7 functions as an endogenous negative regulator of TGF-beta/Smad signaling. TGF-beta/Smad pathway is a major regulator of collagen production in connective tissue. Reduced expression of Smad7 has been reported in TGF-beta-mediated fibrotic...
Authors: Quan T, He T, Voorhees JJ and Fisher GJ

Morphine induces terminal micro-opioid receptor desensitization by sustained phosphorylation of serine-375

Morphine is a poor inducer of micro-opioid receptor (MOR) internalization, but a potent inducer of cellular tolerance. Here we show that, in contrast to full agonists such as [D-Ala(2)-MePhe(4)-Gly-ol]enkephalin (DAMGO), morphine stimulated a...
Authors: Schulz S, Mayer D, Pfeiffer M, Stumm R, Koch T and Hollt V

Detection of a gene cluster that is dispensable for human herpesvirus 6 replication and latency

The U3-U7 gene cluster of human herpesvirus 6 (HHV-6) was replaced with an enhanced green fluorescent protein-puromycin gene cassette containing the cytomegalovirus major immediate-early promoter. Neither viral replication in T cells nor latency and...
Authors: Kondo K, Nozaki H, Shimada K and Yamanishi K

Epigenetic inactivation of class II transactivator (CIITA) is associated with the absence of interferon-gamma-induced HLA-DR expression in colorectal and gastric cancer cells

Tightly regulated at the level of transcription, expression of MHC class II molecules varies significantly among gastrointestinal cancers. High levels of MHC class II expression are often associated with a better prognosis, which is indicative of the...
Authors: Satoh A, Toyota M, Ikeda H, Morimoto Y, Akino K, Mita H, Suzuki H, Sasaki Y, Kanaseki T, Takamura Y,...

Endoglin regulates nitric oxide-dependent vasodilatation

Endoglin is a membrane glycoprotein that plays an important role in cardiovascular development and angiogenesis. We examined the role of endoglin in the control of vascular tone by measuring nitric oxide (NO)-dependent vasodilation in...
Authors: Jerkic M, Rivas-Elena JV, Prieto M, Carron R, Sanz-Rodriguez F, Perez-Barriocanal F,...

Activation of the tumor-specific death effector apoptin and its kinase by an N-terminal determinant of simian virus 40 large T antigen

Apoptin, a viral death protein derived from chicken anemia virus, displays a number of tumor-specific behaviors. In particular, apoptin is phosphorylated, translocates to the nucleus, and induces apoptosis specifically in tumor or transformed cells,...
Authors: Zhang YH, Kooistra K, Pietersen A, Rohn JL and Noteborn MH

Role of Bcl-2 family proteins in a non-apoptotic programmed cell death dependent on autophagy genes

Programmed cell death can be divided into several categories including type I (apoptosis) and type II (autophagic death). The Bcl-2 family of proteins are well-characterized regulators of apoptosis, and the multidomain pro-apoptotic members of this...
Authors: Shimizu S, Kanaseki T, Mizushima N, Mizuta T, Arakawa-Kobayashi S, Thompson CB, Tsujimoto Y
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