Dissection of Ras-dependent signaling pathways controlling aggressive tumor growth of human fibrosarcoma cells: evidence for a potential novel pathway.

abstract：:We analyzed the impact of a GAGA element on a transgenic promoter in Drosophila melanogaster that was activated by proteins composed of the Tet(on) DNA binding domain and either the heat shock factor (HSF) activation domain or a potent subdomain of VP16. Permanganate footprinting was used to monitor polymerase II (Pol...

journal_title：Molecular and cellular biology

authors： Wang YV,Tang H,Gilmour DS

更新日期：2005-05-01 00:00:00

abstract：:We investigated the recognition of the conserved 5-bp repeated motif NGAAN, which occurs in heat shock gene promoters of Drosophila melanogaster and other eukaryotic organisms, by human heat shock transcription factor (HSF). Extended heat shock element mutants of the human HSP70 gene promoter, containing additional NG...

journal_title：Molecular and cellular biology

authors： Cunniff NF,Wagner J,Morgan WD

更新日期：1991-07-01 00:00:00

abstract：:3'-end processing of nucleus-encoded mRNAs includes the addition of a poly(A) tail that is important for translation initiation. Since the vast majority of chloroplast mRNAs acquire their 3' termini by processing yet are not polyadenylated, we asked whether 3' end maturation plays a role in chloroplast translation. A ...

journal_title：Molecular and cellular biology

authors： Rott R,Levy H,Drager RG,Stern DB,Schuster G

更新日期：1998-08-01 00:00:00

abstract：:The erb A oncogene is a dominant negative allele of a thyroid hormone receptor gene and acts in the cancer cell by encoding a transcriptional repressor. We demonstrate here that the DNA sequence recognition properties of the oncogenic form of the erb A protein are significantly altered from those of the normal thyroid...

journal_title：Molecular and cellular biology

authors： Chen H,Smit-McBride Z,Lewis S,Sharif M,Privalsky ML

更新日期：1993-04-01 00:00:00

abstract：:An electrophoretic mobility shift assay was used to characterize interactions of nuclear proteins with a DNA segment in the enhancer element of the leukemogenic murine retrovirus SL3-3. Mutation of a DNA sequence of the 5'-TGTGG-3' type decreased transcription in vivo specifically in T-lymphocyte cell lines. Extracts ...

journal_title：Molecular and cellular biology

authors： Thornell A,Hallberg B,Grundström T

更新日期：1988-04-01 00:00:00

abstract：:The human serine protease inhibitor (serpin) gene cluster at 14q32.1 contains a number of genes that are specifically expressed in hepatic cells. Cell-specific enhancers have been identified in several of these genes, but elements involved in locus-wide gene and chromatin control have yet to be defined. To identify re...

journal_title：Molecular and cellular biology

authors： Marsden MD,Fournier RE

更新日期：2003-05-01 00:00:00

abstract：:Ribosomal protein L5 binds specifically to 5S rRNA to form a complex that is a precursor to 60S subunit assembly in vivo. Analyses in yeast cells, mammalian cells, and Xenopus embryos have shown that the accumulation of L5 is not coordinated with the expression of other ribosomal proteins. In this study, the primary s...

journal_title：Molecular and cellular biology

authors： Wormington WM

更新日期：1989-12-01 00:00:00

abstract：:The Drosophila homeodomain protein Even-skipped (Eve) is a transcriptional repressor, and previous studies have suggested that it functions by interfering with the basal transcription machinery. Here we describe experiments indicating that the mechanism of Eve repression involves a direct interaction with the TATA bin...

journal_title：Molecular and cellular biology

authors： Li C,Manley JL

更新日期：1998-07-01 00:00:00

abstract：:The dynamic SCF (Skp1-cullin1-F-box protein) assembly is controlled by cycles of cullin neddylation/deneddylation based on the deneddylation activity of the COP9 signalosome (CSN) and global sequestration of cullins by CAND1. However, acceptance of this prediction was hampered by the results of recent studies, and the...

journal_title：Molecular and cellular biology

authors： Liu Q,Zhou Y,Tang R,Wang X,Hu Q,Wang Y,He Q

更新日期：2017-11-13 00:00:00

abstract：:The biosynthesis, phosphorylation, and degradation of the epidermal growth factor (EGF) receptor were examined in normal human fibroblasts. The receptor was initially synthesized as an Mr = 160,000 immature form which matured to an Mr = 170,000 form in a monensin-sensitive manner. Tunicamycin treatment led to the accu...

journal_title：Molecular and cellular biology

authors： Decker SJ

更新日期：1984-09-01 00:00:00

abstract：:During V(D)J recombination, the coding ends to be joined are extensively modified. Those modifications, termed coding-end processing, consist of removal and addition of various numbers of nucleotides. We previously showed in vivo that coding-end processing is specific for each coding end, suggesting that specific moti...

journal_title：Molecular and cellular biology

authors： Nadel B,Feeney AJ

更新日期：1997-07-01 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：:Within mineralized bone, osteocytes form dendritic processes that travel through canaliculi to make contact with other osteocytes and cells on the bone surface. This three-dimensional syncytium is thought to be necessary to maintain viability, cell-to-cell communication, and mechanosensation. E11/gp38 is the earliest ...

journal_title：Molecular and cellular biology

authors： Zhang K,Barragan-Adjemian C,Ye L,Kotha S,Dallas M,Lu Y,Zhao S,Harris M,Harris SE,Feng JQ,Bonewald LF

更新日期：2006-06-01 00:00:00

abstract：:Interleukin-6 (IL-6) and leukemia inhibitory factor (LIF), two multifunctional cytokines, recently have been identified as physiological inducers of hematopoietic cell differentiation which also induce terminal differentiation and growth arrest of the myeloblastic leukemic M1 cell line. In this work, it is shown that ...

journal_title：Molecular and cellular biology

authors： Hoffman-Liebermann B,Liebermann DA

更新日期：1991-05-01 00:00:00

abstract：:Both cDNA clones and a genomic DNA clone encoding a 509-amino-acid protein that is 64% similar to chicken pp60c-src were isolated from the simple metazoan Hydra attenuata. We have designated this gene STK, for src-type kinase. Features of the amino acid sequence of the protein encoded by the STK gene suggest that it i...

journal_title：Molecular and cellular biology

authors： Bosch TC,Unger TF,Fisher DA,Steele RE

更新日期：1989-10-01 00:00:00

abstract：:Defects in mismatch repair (MMR) genes result in a mutator phenotype by inducing microsatellite instability (MI), a characteristic of hereditary nonpolyposis colorectal cancers (HNPCC) and a subset of sporadic colon tumors. Present models describing the mechanism by which germ line mutations in MMR genes predispose ki...

journal_title：Molecular and cellular biology

authors： Nicolaides NC,Littman SJ,Modrich P,Kinzler KW,Vogelstein B

更新日期：1998-03-01 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：:A molecular karyotype of Neurospora crassa was obtained by using an alternating-field gel electrophoresis system which employs contour-clamped homogeneous electric fields. The migration of all seven N. crassa chromosomal DNAs was defined, and five of the seven molecules were separated from one another. The estimated s...

journal_title：Molecular and cellular biology

authors： Orbach MJ,Vollrath D,Davis RW,Yanofsky C

更新日期：1988-04-01 00:00:00

abstract：:In Saccharomyces cerevisiae, the heterodimeric transcription factor SBF (for SCB binding factor) is composed of Swi4 and Swi6 and activates gene expression at the G(1)/S-phase transition of the mitotic cell cycle. Cell cycle commitment is associated not only with major alterations in gene expression but also with high...

journal_title：Molecular and cellular biology

authors： Baetz K,Moffat J,Haynes J,Chang M,Andrews B

更新日期：2001-10-01 00:00:00

abstract：:We report our molecular characterization of the Drosophila melanogaster Abelson gene (abl), a gene in which recessive loss-of-function mutations result in lethality at the pupal stage of development. This essential gene consists of 10 exons extending over 26 kilobase pairs of genomic DNA. The DNA sequence encodes a pr...

journal_title：Molecular and cellular biology

authors： Henkemeyer MJ,Bennett RL,Gertler FB,Hoffmann FM

更新日期：1988-02-01 00:00:00

abstract：:CCAAT/enhancer-binding protein alpha (C/EBPalpha) is one of the key transcription factors that mediate lineage specification and differentiation of multipotent myeloid progenitors into mature granulocytes. Although C/EBPalpha is known to induce granulopoiesis while suppressing monocyte differentiation, it is unclear h...

journal_title：Molecular and cellular biology

authors： Ross SE,Radomska HS,Wu B,Zhang P,Winnay JN,Bajnok L,Wright WS,Schaufele F,Tenen DG,MacDougald OA

更新日期：2004-01-01 00:00:00

abstract：:Centrosomes ensure accurate chromosome segregation by directing spindle bipolarity. Loss of centrosome regulation results in centrosome amplification, multipolar mitosis and aneuploidy. Since centrosome amplification is common in premalignant lesions and breast tumors, it is proposed to play a central role in breast t...

journal_title：Molecular and cellular biology

authors： Lee MY,Moreno CS,Saavedra HI

更新日期：2014-07-01 00:00:00

abstract：:Fragments of African green monkey (Cercopithecus aethiops) DNA (3.5 to 18.0 kilobases) were inserted downstream from the thymidine kinase (TK, tk) coding region in pTK206/SV010, a gene construct which lacks both copies of the hexanucleotide 5'-AATAAA-3' and contains a simian virus 40 origin of replication, allowing it...

journal_title：Molecular and cellular biology

authors： Santangelo GM,Cole CN

更新日期：1983-04-01 00:00:00

abstract：:The human vitamin D-binding protein (hDBP) gene exists in a cluster of four liver-expressed genes. A minimal hDBP transgene, containing a defined set of liver-specific DNase I hypersensitive sites (HSs), is robustly expressed in mouse liver in a copy-number-dependent manner. Here we evaluate these HSs for function. De...

journal_title：Molecular and cellular biology

authors： Hiroki T,Liebhaber SA,Cooke NE

更新日期：2007-11-01 00:00:00

abstract：:Repetitive DNA sequences have been implicated in the mediation of DNA rearrangement in mammalian cells. We have tested this hypothesis by using a dihydrofolate reductase (DHFR) expression vector into which candidate sequences were inserted. DHFR- Chinese hamster ovary (CHO) cells were transfected with this vector, the...

journal_title：Molecular and cellular biology

authors： Heartlein MW,Knoll JH,Latt SA

更新日期：1988-09-01 00:00:00

abstract：:The product of the Saccharomyces cerevisiae nuclear gene PET494 is required to promote the translation of the mitochondrial mRNA encoding cytochrome c oxidase subunit III (coxIII). The level of cytochrome c oxidase activity is affected by several different environmental conditions, which also influence coxIII expressi...

journal_title：Molecular and cellular biology

authors： Marykwas DL,Fox TD

更新日期：1989-02-01 00:00:00

abstract：:PC12 cells exhibit precise temporal control of growth factor signaling in which stimulation with epidermal growth factor (EGF) leads to transient extracellular signal-regulated kinase (ERK) activity and cell proliferation, whereas nerve growth factor (NGF) stimulation leads to sustained ERK activity and differentiatio...

journal_title：Molecular and cellular biology

authors： Herbst KJ,Allen MD,Zhang J

更新日期：2011-10-01 00:00:00

abstract：:Previous studies indicated that repression by eve involves cooperative DNA binding and leads to the formation of a DNA loop which encompasses the DNA sequences normally bound by the RNA polymerase II general transcription factors. To test the general principle of whether bending of a basal promoter sequence can contri...

journal_title：Molecular and cellular biology

authors： TenHarmsel A,Biggin MD

更新日期：1995-10-01 00:00:00

abstract：:The Src homology 2-containing phosphotyrosine phosphatase (SHP2) is primarily a positive effector of receptor tyrosine kinase signaling. However, the molecular mechanism by which SHP2 effects its biological function is unknown. In this report, we provide evidence that defines the molecular mechanism and site of action...

journal_title：Molecular and cellular biology

authors： Agazie YM,Hayman MJ

更新日期：2003-11-01 00:00:00

abstract：:SCF complexes are E3 ubiquitin-protein ligases that mediate degradation of regulatory and signaling proteins and control G1/S cell cycle progression by degradation of G1 cyclins and the cyclin-dependent kinase inhibitor, Sic1. Interchangeable F-box proteins bind the core SCF components; each recruits a specific subset...

journal_title：Molecular and cellular biology

authors： Ivantsiv Y,Kaplun L,Tzirkin-Goldin R,Shabek N,Raveh D

更新日期：2006-03-01 00:00:00