Requirement for a functional interaction between mediator components Med6 and Srb4 in RNA polymerase II transcription.

abstract：:The transcription factor NF-kappaB is overexpressed or constitutively activated in many cancer cells, where it induces expression of antiapoptotic genes correlating with resistance to anticancer therapies. Small molecules that inhibit the NF-kappaB signaling pathway could therefore be used to induce apoptosis in NF-ka...

journal_title：Molecular and cellular biology

authors： Bayon Y,Ortiz MA,Lopez-Hernandez FJ,Gao F,Karin M,Pfahl M,Piedrafita FJ

更新日期：2003-02-01 00:00:00

abstract：:Cooperation between STAT3 and c-Jun in driving transcription during transfection of reporter constructs is well established, and both proteins are present on some interleukin-6 (IL-6) STAT3-dependent promoters on chromosomal loci. We report that small interfering RNA knockdown of c-Jun or c-Fos diminishes IL-6 inducti...

journal_title：Molecular and cellular biology

authors： Ginsberg M,Czeko E,Müller P,Ren Z,Chen X,Darnell JE Jr

更新日期：2007-09-01 00:00:00

abstract：:Both chemotaxis and phagocytosis depend upon actin-driven cell protrusions and cell membrane remodeling. While chemoattractant receptors rely upon canonical G-protein signaling to activate downstream effectors, whether such signaling pathways affect phagocytosis is contentious. Here, we report that Gαi nucleotide exch...

journal_title：Molecular and cellular biology

authors： Huang NN,Becker S,Boularan C,Kamenyeva O,Vural A,Hwang IY,Shi CS,Kehrl JH

更新日期：2014-11-15 00:00:00

abstract：:Nuclear microinjection of c-H-ras DNA induced DNA synthesis in reversibly nonproliferating quiescent human cells. The proto-oncogene and oncogene forms were equally effective inducers. In contrast, c-H-ras DNA either alone or in combination with the adenovirus E1A gene did not cause terminally nondividing senescent ce...

journal_title：Molecular and cellular biology

authors： Lumpkin CK,Knepper JE,Butel JS,Smith JR,Pereira-Smith OM

更新日期：1986-08-01 00:00:00

abstract：:Simultaneous resistance to an array of drugs with different cytotoxic activities is a property of Saccharomyces cerevisiae, in which the protein Pdr3p has recently been shown to play a role as a transcriptional regulator. We provide evidence that the yeast PDR3 gene, which encodes a zinc finger transcription factor im...

journal_title：Molecular and cellular biology

authors： Delahodde A,Delaveau T,Jacq C

更新日期：1995-08-01 00:00:00

abstract：:The precise expression of the N-myc proto-oncogene is essential for normal mammalian development, whereas altered N-myc gene regulation is known to be a determinant factor in tumor formation. Using transgenic mouse embryos, we show that N-myc sequences from kb -8.7 to kb +7.2 are sufficient to reproduce the N-myc embr...

journal_title：Molecular and cellular biology

authors： Potvin E,Beuret L,Cadrin-Girard JF,Carter M,Roy S,Tremblay M,Charron J

更新日期：2010-11-01 00:00:00

abstract：:Nonsense-mediated mRNA decay (NMD) is a conserved proofreading mechanism that protects eukaryotic cells from the potentially deleterious effects of truncated proteins. Studies of Saccharomyces cerevisiae imply that NMD is a predominantly cytoplasmic decay pathway, while studies of mammalian systems suggest that decay ...

journal_title：Molecular and cellular biology

authors： Maderazo AB,Belk JP,He F,Jacobson A

更新日期：2003-02-01 00:00:00

abstract：:Two members of the heat shock transcription factor (HSF) family, HSF1 and HSF2, both function as transcriptional activators of heat shock gene expression. However, the inducible DNA-binding activities of these two factors are regulated by distinct pathways. HSF1 is activated by heat shock and other forms of stress, wh...

journal_title：Molecular and cellular biology

authors： Sistonen L,Sarge KD,Morimoto RI

更新日期：1994-03-01 00:00:00

abstract：:We deduced the structure of the mouse profilin II gene. It contains five exons that can generate four different transcripts by alternative splicing. Two transcripts encode different profilin II isoforms (designated IIa and IIb) that have similar affinities for actin but different affinities for polyphosphoinositides a...

journal_title：Molecular and cellular biology

authors： Lambrechts A,Braun A,Jonckheere V,Aszodi A,Lanier LM,Robbens J,Van Colen I,Vandekerckhove J,Fässler R,Ampe C

更新日期：2000-11-01 00:00:00

abstract：:The nuclear enzyme DNA topoisomerase II catalyzes the breakage and resealing of duplex DNA and plays an important role in several genetic processes. It also mediates the DNA cleavage activity and cytotoxicity of clinically important anticancer agents such as etoposide. We have examined the activity of topoisomerase II...

journal_title：Molecular and cellular biology

authors： Chow KC,Ross WE

更新日期：1987-09-01 00:00:00

abstract：:Polycomb repressive complexes (PRCs) are important chromatin regulators of embryonic stem (ES) cell function. RYBP binds Polycomb H2A monoubiquitin ligases Ring1A and Ring1B and has been suggested to assist PRC localization to their targets. Moreover, constitutive inactivation of RYBP precludes ES cell formation. Usin...

journal_title：Molecular and cellular biology

authors： Hisada K,Sánchez C,Endo TA,Endoh M,Román-Trufero M,Sharif J,Koseki H,Vidal M

更新日期：2012-03-01 00:00:00

abstract：:The human epidermal growth factor receptor (EGFR) promoter is activated by both wild-type and tumor-derived mutant p53. In this communication, we demonstrate that EGFR promoter sequence requirements for transactivation by wild-type and mutant p53 are different. Transient-expression assays with EGFR promoter deletions ...

journal_title：Molecular and cellular biology

authors： Ludes-Meyers JH,Subler MA,Shivakumar CV,Munoz RM,Jiang P,Bigger JE,Brown DR,Deb SP,Deb S

更新日期：1996-11-01 00:00:00

abstract：:Misfolding of proteins containing abnormal expansions of polyglutamine (polyQ) repeats is associated with cytotoxicity in several neurodegenerative disorders, including Huntington's disease. Recently, the eukaryotic chaperonin TRiC hetero-oligomeric complex has been shown to play an important role in protecting cells ...

journal_title：Molecular and cellular biology

authors： Kim S,Park DY,Lee D,Kim W,Jeong YH,Lee J,Chung SK,Ha H,Choi BH,Kim KT

更新日期：2014-02-01 00:00:00

abstract：:Special AT-rich sequence-binding protein 1 (SATB1) is a tissue-restricted genome organizer that provides a key link between DNA loop organization, chromatin modification/remodeling, and transcription factor association at matrix attachment regions (MARs). The SUMO E3 ligase PIAS1 enhances SUMO conjugation to SATB1 lys...

journal_title：Molecular and cellular biology

authors： Tan JA,Song J,Chen Y,Durrin LK

更新日期：2010-06-01 00:00:00

abstract：:Retinoid X receptors (RXR) have been identified as common subunits in the regulation of multiple hormonal signaling pathways. Using circular permutation and phasing analysis of specific response elements, we present evidence that RXR-retinoic acid receptor and RXR-thyroid hormone receptor heterodimer or RXR-RXR homodi...

journal_title：Molecular and cellular biology

authors： Lu XP,Eberhardt NL,Pfahl M

更新日期：1993-10-01 00:00:00

abstract：:The tumor suppressor gene PTEN is a phosphoinositide phosphatase that is inactivated by deletion and/or mutation in diverse human tumors. Wild-type PTEN is expressed both in the cytoplasm and nucleus in normal cells, with a preferential nuclear localization in differentiated or resting cells. To elucidate the relation...

journal_title：Molecular and cellular biology

authors： Liu JL,Sheng X,Hortobagyi ZK,Mao Z,Gallick GE,Yung WK

更新日期：2005-07-01 00:00:00

abstract：:The protein-tyrosine kinases (PTKs) are a burgeoning family of proteins, each of which bears a conserved domain of 250 to 300 amino acids capable of phosphorylating substrate proteins on tyrosine residues. We recently exploited the existence of two highly conserved sequence elements within the catalytic domain to gene...

journal_title：Molecular and cellular biology

authors： Wilks AF,Harpur AG,Kurban RR,Ralph SJ,Zürcher G,Ziemiecki A

更新日期：1991-04-01 00:00:00

abstract：:Over 400 Krüppel-associated box zinc finger proteins (KRAB-ZFPs) are encoded in mammalian genomes. While KRAB-ZFPs strongly repress transcription in vitro, little is known about their biological function or gene targets in vivo. Regulator of sex limitation 1 (Rsl1), one of the first KRAB-Zfp genes assigned a physiolog...

journal_title：Molecular and cellular biology

authors： Krebs CJ,Schultz DC,Robins DM

更新日期：2012-09-01 00:00:00

abstract：:Human CRK protein is a homolog of the chicken v-crk oncogene product and consists mostly of src homology region 2 (SH2) and SH3, which are shared by many proteins, in particular those involved in signal transduction. SH2 has been shown to bind specifically to phosphotyrosine-containing peptides. We report here that bo...

journal_title：Molecular and cellular biology

authors： Tanaka S,Hattori S,Kurata T,Nagashima K,Fukui Y,Nakamura S,Matsuda M

更新日期：1993-07-01 00:00:00

abstract：:Tristetraprolin (TTP) acts by binding to AU-rich elements in certain mRNAs, such as tumor necrosis factor (TNF) mRNA, and increasing their decay rates. TTP knockout mice exhibit a profound inflammatory syndrome that is largely due to increased TNF levels. Although TTP's effects on gene expression have been well studie...

journal_title：Molecular and cellular biology

authors： Patial S,Stumpo DJ,Young WS 3rd,Ward JM,Flake GP,Blackshear PJ

更新日期：2016-04-15 00:00:00

abstract：:Previous characterization of GLI, a gene found to be amplified and expressed in a subset of human brain tumors, revealed the presence of five tandem zinc fingers related to those of Krüppel (Kr), a Drosophila segmentation gene of the gap class. We have used the GLI cDNA as a molecular probe to isolate related sequence...

journal_title：Molecular and cellular biology

authors： Ruppert JM,Kinzler KW,Wong AJ,Bigner SH,Kao FT,Law ML,Seuanez HN,O'Brien SJ,Vogelstein B

更新日期：1988-08-01 00:00:00

abstract：:The two beta-tubulin genes of the unicellular green alga Chlamydomonas reinhardtii are expressed coordinately after deflagellation and produce two transcripts of 2.1 and 2.0 kilobases. Full-length cDNA clones corresponding to the transcript of each gene were isolated. DNA sequences were obtained from the cDNA clones a...

journal_title：Molecular and cellular biology

authors： Youngblom J,Schloss JA,Silflow CD

更新日期：1984-12-01 00:00:00

abstract：:The putative promoter of the variant surface glycoprotein (VSG) gene of Trypanosoma brucei was cloned into a plasmid containing the chloramphenicol acetyltransferase (CAT) gene. After electroporation into trypanosomes, this construct directed the expression of the CAT reporter gene. The essential region for promoter a...

journal_title：Molecular and cellular biology

authors： Jefferies D,Tebabi P,Pays E

更新日期：1991-01-01 00:00:00

abstract：:CHIP is a cochaperone of Hsp70 that inhibits Hsp70-dependent refolding in vitro. However, the effect of altered expression of CHIP on the fate of unfolded proteins in mammalian cells has not been determined. Surprisingly, we found that overexpression of CHIP in fibroblasts increased the refolding of proteins after the...

journal_title：Molecular and cellular biology

authors： Kampinga HH,Kanon B,Salomons FA,Kabakov AE,Patterson C

更新日期：2003-07-01 00:00:00

abstract：:Histone acetylation and deacetylation have been implicated in the regulation of gene expression. Molecular studies have shown that histone deacetylases (HDACs) function as transcriptional repressors. However, very little is known about their roles during development in multicellular organisms. We previously demonstrat...

journal_title：Molecular and cellular biology

authors： Dufourcq P,Victor M,Gay F,Calvo D,Hodgkin J,Shi Y

更新日期：2002-05-01 00:00:00

abstract：:Previous analyses have identified related cytoplasmic Lsm1-7p and nuclear Lsm2-8p complexes. Here we report that mature heat shock and MET mRNAs that are trapped in the nucleus due to a block in mRNA export were strongly stabilized in strains lacking Lsm6p or the nucleus-specific Lsm8p protein but not by the absence o...

journal_title：Molecular and cellular biology

authors： Kufel J,Bousquet-Antonelli C,Beggs JD,Tollervey D

更新日期：2004-11-01 00:00:00

abstract：:We have studied the mechanism by which 5'-flanking sequences modulate the in vitro transcription of eucaryotic tRNA genes. Using deletion and linker substitution mutagenesis, we have found that the 5'-flanking sequences responsible for the different in vitro transcription levels of three Drosophila tRNA5Asn genes are ...

journal_title：Molecular and cellular biology

authors： Lofquist AK,Garcia AD,Sharp SJ

更新日期：1988-10-01 00:00:00

abstract：:SWI/SNF ATP-dependent chromatin remodeling complexes (remodelers) perform critical functions in eukaryotic gene expression control. BAP and PBAP are the fly representatives of the two evolutionarily conserved major subclasses of SWI/SNF remodelers. Both complexes share seven core subunits, including the Brahma ATPase,...

journal_title：Molecular and cellular biology

authors： Chalkley GE,Moshkin YM,Langenberg K,Bezstarosti K,Blastyak A,Gyurkovics H,Demmers JA,Verrijzer CP

更新日期：2008-05-01 00:00:00

abstract：:The retinoblastoma susceptibility gene product pRb restricts cellular proliferation by affecting gene expression by all three classes of nuclear RNA polymerases. To elucidate the molecular mechanisms underlying pRb-mediated repression of ribosomal DNA (rDNA) transcription by RNA polymerase I, we have analyzed the effe...

journal_title：Molecular and cellular biology

authors： Voit R,Schäfer K,Grummt I

更新日期：1997-08-01 00:00:00

abstract：:NIH 3T3 cells infected with Moloney murine leukemia virus (MoMLV) express high levels of virus-specific RNA. To inhibit replication of the virus, we stably introduced chimeric tRNA genes encoding antisense templates into NIH 3T3 cells via a retroviral vector. Efficient expression of hybrid tRNA-MoMLV antisense transcr...

journal_title：Molecular and cellular biology

authors： Sullenger BA,Lee TC,Smith CA,Ungers GE,Gilboa E

更新日期：1990-12-01 00:00:00