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4863 results sorted by

The identification and characterization of two phosphatidylinositol-4,5-bisphosphate 4-phosphatases

Numerous inositol polyphosphate 5-phosphatases catalyze the degradation of phosphatidylinositol-4,5-bisphosphate (PtdIns-4,5-P(2)) to phosphatidylinositol-4-phosphate (PtdIns-4-P). An alternative pathway to degrade PtdIns-4,5-P(2) is the hydrolysis...
Authors: Ungewickell A, Hugge C, Kisseleva M, Chang SC, Zou J, Feng Y, Galyov EE, Wilson M and Majerus PW

AMP-Activated Protein Kinase Protects Cardiomyocytes against Hypoxic Injury through Attenuation of Endoplasmic Reticulum Stress

Oxygen deprivation leads to the accumulation of misfolded proteins in the endoplasmic reticulum (ER), causing ER stress. Under conditions of ER stress, inhibition of protein synthesis and up-regulation of ER chaperone expression reduce the misfolded...
Authors: Terai K, Hiramoto Y, Masaki M, Sugiyama S, Kuroda T, Hori M, Kawase I and Hirota H

The transcription factor AP-2 causes cell enlargement and insulin resistance in 3T3-L1 adipocytes

We have reported the association of variations in the AP-2beta transcription factor gene with type 2 diabetes. This gene was preferentially expressed in 3T3-L1 adipocytes in a differentiation-stage-dependent manner and preliminary experiments showed...
Authors: Tao Y, Maegawa H, Ugi S, Ikeda K, Nagai Y, Egawa K, Nakamura T, Tsukada S, Nishio Y, Maeda S,...

Identification of the cAMP-Responsive Enhancer of the Murine ABCA1 Gene. Requirement for CREB1 and STAT3/4 Elements

OBJECTIVE: To determine the mechanism by which expression of the murine ABCA1 gene is highly induced by cAMP analogues. METHODS AND RESULTS: ABCA1 mRNA turnover cannot account for its induction by cAMP. Thus cAMP induction of ABCA1 mRNA occurs at a...
Authors: Le Goff W, Zheng P, Brubaker G and Smith JD

Mutation of a Single Amino Acid Residue in the Basic Region of the Epstein-Barr Virus (EBV) Lytic Cycle Switch Protein Zta (BZLF1) Prevents Reactivation of EBV from Latency

Zta, the product of the BZLF1 gene carried by Epstein-Barr virus (EBV), is crucial for reactivation of EBV from latency. Zta is a member of the bZIP family of transcription factors, and in common with many of these, Zta possesses a conserved cysteine...
Authors: Schelcher C, Valencia S, Delecluse HJ, Hicks M and Sinclair AJ

Leucine-rich repeat kinase 2 (LRRK2) interacts with parkin, and mutant LRRK2 induces neuronal degeneration

Parkinson's disease (PD) is a disorder of movement, cognition, and emotion, and it is characterized pathologically by neuronal degeneration with Lewy bodies, which are cytoplasmic inclusion bodies containing deposits of aggregated proteins. Most PD...
Authors: Smith WW, Pei Z, Jiang H, Moore DJ, Liang Y, West AB, Dawson VL, Dawson TM, Ross CA

Interaction of nephrocystin-4 and RPGRIP1 is disrupted by nephronophthisis or Leber congenital amaurosis-associated mutations

RPGR-interacting protein 1 (RPGRIP1) is a key component of cone and rod photoreceptor cells, where it interacts with RPGR (retinitis pigmentosa GTPase regulator). Mutations in RPGRIP1 lead to autosomal recessive congenital blindness [Leber congenital...
Authors: Roepman R, Letteboer SJ, Arts HH, van Beersum SE, Lu X, Krieger E, Ferreira PA and Cremers FP

Loss of bif-1 suppresses bax/bak conformational change and mitochondrial apoptosis

Bif-1, a member of the endophilin B protein family, interacts with Bax and promotes interleukin-3 withdrawal-induced Bax conformational change and apoptosis when overexpressed in FL5.12 cells. Here, we provide evidence that Bif-1 plays a regulatory...
Authors: Takahashi Y, Karbowski M, Yamaguchi H, Kazi A, Wu J, Sebti SM, Youle RJ and Wang HG

Altered Expression of Gq/11 Protein Shapes mGlu1 and mGlu5 Receptor-Mediated Single Cell Inositol 1,4,5-Trisphosphate and Ca2+ Signaling

The metabotropic glutamate (mGlu) receptors, mGlu1 and mGlu5, mediate distinct inositol 1,4,5-trisphosphate (IP3) and Ca(2+) signaling patterns, governed in part by differential mechanisms of feedback regulation following activation. Single cell...
Authors: Atkinson PJ, Young KW, Ennion SJ, Kew JN, Nahorski SR and Challiss RA

Identifying a common molecular mechanism for inhibition of MITF and STAT3 by PIAS3

Protein inhibitor of activated STAT3 (PIAS3) functions in vivo as a key molecule in suppressing the transcriptional activity of both microphthalmia transcription factor (MITF) and signal transducer and activator of transcription 3 (STAT3), two...
Authors: Levy C, Lee YN, Nechushtan H, Schueler-Furman O, Sonnenblick A, Hacohen S and Razin E