Activation of Ras in vitro and in intact fibroblasts by the Vav guanine nucleotide exchange protein.

abstract：:Previously, we described a retrovirus vector that contained two genes: a 5' gene under transcriptional control of the viral long terminal repeat and a 3' gene under transcriptional control of the herpes simplex virus thymidine kinase promoter. By using a biological assay, we found that expression of the 5' gene is sup...

journal_title：Molecular and cellular biology

authors： Emerman M,Temin HM

更新日期：1986-03-01 00:00:00

abstract：:The tumor necrosis factor alpha (TNF-alpha) gene is rapidly activated by lipopolysaccharide (LPS). Here, we show that extracellular signal-regulated kinase (ERK) kinase activity but not calcineurin phosphatase activity is required for LPS-stimulated TNF-alpha gene expression. In LPS-stimulated macrophages, the ERK sub...

journal_title：Molecular and cellular biology

authors： Tsai EY,Falvo JV,Tsytsykova AV,Barczak AK,Reimold AM,Glimcher LH,Fenton MJ,Gordon DC,Dunn IF,Goldfeld AE

更新日期：2000-08-01 00:00:00

abstract：:The alpha 2 protein of the yeast Saccharomyces cerevisiae normally represses a set of cell-type-specific genes (the a-specific genes) that are transcribed by RNA polymerase II. In this study, we determined whether alpha 2 can affect transcription by other RNA polymerases. We find that alpha 2 can repress transcription...

journal_title：Molecular and cellular biology

authors： Herschbach BM,Johnson AD

更新日期：1993-07-01 00:00:00

abstract：:The Saccharomyces cerevisiae cell cycle is arrested in G1 phase by the mating factor pathway. Genetic evidence has suggested that the G1 cyclins Cln1, Cln2, and Cln3 are targets of this pathway whose inhibition results in G1 arrest. Inhibition of Cln1- and Cln2-associated kinase activity by the mating factor pathway a...

journal_title：Molecular and cellular biology

authors： Jeoung DI,Oehlen LJ,Cross FR

更新日期：1998-01-01 00:00:00

abstract：:Tyrosine phosphorylation of CAS (Crk-associated substrate, p130(Cas)) has been implicated as a key signaling step in integrin control of normal cellular behaviors, including motility, proliferation, and survival. Aberrant CAS tyrosine phosphorylation may contribute to cell transformation by certain oncoproteins, inclu...

journal_title：Molecular and cellular biology

authors： Ruest PJ,Shin NY,Polte TR,Zhang X,Hanks SK

更新日期：2001-11-01 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：:Aflatoxin B1 (AFB1) is a human hepatotoxin and hepatocarcinogen produced by the mold Aspergillus flavus. In humans, AFB1 is primarily bioactivated by cytochrome P450 1A2 (CYP1A2) and 3A4 to a genotoxic epoxide that forms N7-guanine DNA adducts. A series of yeast haploid mutants defective in DNA repair and cell cycle c...

journal_title：Molecular and cellular biology

authors： Guo Y,Breeden LL,Zarbl H,Preston BD,Eaton DL

更新日期：2005-07-01 00:00:00

abstract：:A novel small nuclear ribonucleoprotein (snRNP) complex containing both U11 and U12 RNAs has been identified in HeLa cell extracts. This U11/U12 snRNP complex can be visualized on glycerol gradients, on native polyacrylamide gels, and by selection with antisense 2'-O-methyl oligoribonucleotides. RNase H-mediated degra...

journal_title：Molecular and cellular biology

authors： Wassarman KM,Steitz JA

更新日期：1992-03-01 00:00:00

abstract：:The cyclin-dependent kinase inhibitor p21/WAF1/CIP1 is an important regulator of cell cycle progression, senescence, and differentiation. Genotoxic stress leads to activation of the tumor suppressor p53 and subsequently to induction of p21 expression. Here we show that the tumor suppressor p53 cooperates with the tran...

journal_title：Molecular and cellular biology

authors： Lagger G,Doetzlhofer A,Schuettengruber B,Haidweger E,Simboeck E,Tischler J,Chiocca S,Suske G,Rotheneder H,Wintersberger E,Seiser C

更新日期：2003-04-01 00:00:00

abstract：:Transcription factor Nrf2 (NF-E2-related factor 2) is essential for oxidative and electrophilic stress responses. While it has been well characterized that Nrf2 activity is tightly regulated at the protein level through proteasomal degradation via Keap1 (Kelch-like ECH-associated protein 1)-mediated ubiquitination, no...

journal_title：Molecular and cellular biology

authors： Suzuki T,Shibata T,Takaya K,Shiraishi K,Kohno T,Kunitoh H,Tsuta K,Furuta K,Goto K,Hosoda F,Sakamoto H,Motohashi H,Yamamoto M

更新日期：2013-06-01 00:00:00

abstract：:Using a subtractive cloning scheme on cDNA prepared from primary pro-B and pre-B cells, we identified several genes whose products regulate apoptosis. We further characterized one of these genes, encoding protein kinase Ceta (PKCeta). PKCeta transcripts were readily detected in pro-B cells but were absent in pre-B cel...

journal_title：Molecular and cellular biology

authors： Morrow TA,Muljo SA,Zhang J,Hardwick JM,Schlissel MS

更新日期：1999-08-01 00:00:00

abstract：:The signal transducer and activator of transcription STAT5 plays a major role in the cellular response to cytokines, but the mechanism by which it activates transcription remains poorly understood. We show here that deacetylase inhibitors (trichostatin A, suberoylanilide hydroxamic acid, and sodium butyrate) prevent i...

journal_title：Molecular and cellular biology

authors： Rascle A,Johnston JA,Amati B

更新日期：2003-06-01 00:00:00

abstract：:We isolated and characterized LP1.2, a mouse myeloma mutant with a deletion of at least 4 kilobases (kb) immediately 3' of the alpha gene and introduction of at least 5 kb of novel (nonimmunoglobulin) sequence in its place. A 6.2-kb genomic EcoRI fragment from the mutated allele was cloned, and a subfragment was seque...

journal_title：Molecular and cellular biology

authors： Gregor PD,Morrison SL

更新日期：1986-06-01 00:00:00

abstract：:It is thought that degradation of nuclear proteins by the ubiquitylation system requires nuclear-cytoplasmic trafficking of E3 ubiquitin ligases. The von Hippel-Lindau (VHL) tumor suppressor protein is the substrate recognition component of a Cullin-2-containing E3 ubiquitin ligase that recruits hypoxia-inducible fact...

journal_title：Molecular and cellular biology

authors： Khacho M,Mekhail K,Pilon-Larose K,Payette J,Lee S

更新日期：2008-01-01 00:00:00

abstract：:The baker's yeast Saccharomyces cerevisiae expresses three homologues of the Nramp family of metal transporters: Smf1p, Smf2p, and Smf3p, encoded by SMF1, SMF2, and SMF3, respectively. Here we report a comparative analysis of the yeast Smf proteins at the levels of localization, regulation, and function of the corresp...

journal_title：Molecular and cellular biology

authors： Portnoy ME,Liu XF,Culotta VC

更新日期：2000-11-01 00:00:00

abstract：:The SF-21 insect cell line undergoes rapid and widespread apoptosis when treated with actinomycin D or when infected with a mutant of the baculovirus Autographa californica nuclear polyhedrosis virus lacking a p35 gene or a functionally active iap (inhibitor of apoptosis) gene. Here we provide evidence that the basis ...

journal_title：Molecular and cellular biology

authors： Clem RJ,Miller LK

更新日期：1994-08-01 00:00:00

abstract：:We have previously identified poly(A)-binding protein 1 (PABP1) as a ligand for paxillin and shown that the paxillin-PABP1 complex undergoes nucleocytoplasmic shuttling. By targeting the paxillin-binding subdomain sequences in PABP1, we have generated mutants of PABP1 that do not bind to cellular paxillin. Here we rep...

journal_title：Molecular and cellular biology

authors： Woods AJ,Kantidakis T,Sabe H,Critchley DR,Norman JC

更新日期：2005-05-01 00:00:00

abstract：:Mutation in the REC2 gene of Ustilago maydis leads to defects in DNA repair, recombination, and meiosis. Analysis of the primary sequence of the Rec2 protein reveals a region with significant homology to bacterial RecA protein and to the yeast recombination proteins Dmc1, Rad51, and Rad57. This homologous region in th...

journal_title：Molecular and cellular biology

authors： Rubin BP,Ferguson DO,Holloman WK

更新日期：1994-09-01 00:00:00

abstract：:We cloned a 12.3-kilobase (kb) endogenous plasmid, Ddp1, found in several wild-type and laboratory strains of Dictyostelium discoideum into pBR322. The cloned plasmids have been used to cotransform D. discoideum cells with B10S, a transformation vector carrying a gene fusion conferring resistance to G418. Whereas B10S...

journal_title：Molecular and cellular biology

authors： Firtel RA,Silan C,Ward TE,Howard P,Metz BA,Nellen W,Jacobson A

更新日期：1985-11-01 00:00:00

abstract：:The hsp70-interacting protein Hip participates in the assembly pathway for progesterone receptor complexes. During assembly, Hip appears at early assembly stages in a transient manner that parallels hsp70 interactions. In this study, a cDNA for human Hip was used to develop various mutant Hip forms in the initial mapp...

journal_title：Molecular and cellular biology

authors： Prapapanich V,Chen S,Toran EJ,Rimerman RA,Smith DF

更新日期：1996-11-01 00:00:00

abstract：:The levels of the A, B, and C subunits of protein phosphatase 2A in extracts from synchronized embryonic bovine tracheal cells were determined by immunoblotting with subunit-specific antibodies. A constant amount of each subunit was found in resting cells as well as in growing cells from all stages of the cell cycle. ...

journal_title：Molecular and cellular biology

authors： Ruediger R,Van Wart Hood JE,Mumby M,Walter G

更新日期：1991-08-01 00:00:00

abstract：:As a subunit of a ubiquitin ligase, Skp2 is implicated in facilitating cell cycle progression via degradation of various protein targets. We report here that Skp2 is rapidly degraded following cellular stimulation by the cytokine transforming growth factor beta (TGF-beta) and that this degradation stabilizes the cell ...

journal_title：Molecular and cellular biology

authors： Liu W,Wu G,Li W,Lobur D,Wan Y

更新日期：2007-04-01 00:00:00

abstract：:The ADP/ATP translocator, a transmembrane protein of the mitochondrial inner membrane, is coded in Saccharomyces cerevisiae by the nuclear gene PET9. DNA sequence analysis of the PET9 gene showed that it encoded a protein of 309 amino acids which exhibited a high degree of homology with mitochondrial translocator prot...

journal_title：Molecular and cellular biology

authors： Adrian GS,McCammon MT,Montgomery DL,Douglas MG

更新日期：1986-02-01 00:00:00

abstract：:Glucocorticoids are among the most potent and effective agents for treating inflammatory diseases and hematological cancers. However, subpopulations of patients are often resistant to steroid therapy, and determining the molecular mechanisms that contribute to glucocorticoid resistance is thus critical to addressing t...

journal_title：Molecular and cellular biology

authors： Ramamoorthy S,Cidlowski JA

更新日期：2013-05-01 00:00:00

abstract：:In the gal-his3 hybrid promoter his3-GG1, the yeast upstream activator protein GCN4 stimulates transcription when bound at the position normally occupied by the TATA element. This TATA-independent activation by GCN4 requires two additional elements in the gal enhancer region that are distinct from those involved in no...

journal_title：Molecular and cellular biology

authors： Brandl CJ,Struhl K

更新日期：1990-08-01 00:00:00

abstract：:In yeast there are at least 14 members of the beta-karyopherin protein family that govern the movement of a diverse set of cargoes between the nucleus and cytoplasm. Knowledge of the cargoes carried by each karyopherin and insight into the mechanisms of transport are fundamental to understanding constitutive and regul...

journal_title：Molecular and cellular biology

authors： Leslie DM,Zhang W,Timney BL,Chait BT,Rout MP,Wozniak RW,Aitchison JD

更新日期：2004-10-01 00:00:00

abstract：:GATA-3 is a zinc finger transcription factor which is expressed in a highly restricted and strongly conserved tissue distribution pattern in vertebrate organisms, specifically, in a subset of hematopoietic cells, in cells within the central and peripheral nervous systems, in the kidney, and in placental trophoblasts. ...

journal_title：Molecular and cellular biology

authors： Yang Z,Gu L,Romeo PH,Bories D,Motohashi H,Yamamoto M,Engel JD

更新日期：1994-03-01 00:00:00

abstract：:Downregulation in expression of the c-myc proto-oncogene is an early molecular event in differentiation of murine C2C12 myoblasts into multinucleated myotubes. During differentiation, levels of c-myc mRNA decrease 3- to 10-fold despite a lack of change in its transcription rate. To identify cis-acting elements that ta...

journal_title：Molecular and cellular biology

authors： Yeilding NM,Lee WM

更新日期：1997-05-01 00:00:00

abstract：:Ribosomal (r) proteins encoded by polyadenylated RNA were specifically precipitated in vitro from polysomes by using antibodies raised against characterized Drosophila melanogaster r proteins. The immuno-purified mRNA in the polysome complex was used to prepare cDNA with which to probe a D. melanogaster genomic librar...

journal_title：Molecular and cellular biology

authors： Burns DK,Stark BC,Macklin MD,Chooi WY

更新日期：1984-12-01 00:00:00

abstract：:During mammalian vascular development, endothelial cells form a complex array of vessels that differ markedly in structure and function, but the molecular basis for this vascular complexity is poorly understood. Recent insights into endothelial diversity have come from the identification of molecular markers expressed...

journal_title：Molecular and cellular biology

authors： Xu B,deWaal RM,Mor-Vaknin N,Hibbard C,Markovitz DM,Kahn ML

更新日期：2004-10-01 00:00:00