Fine structure and evolution of the rat serum albumin gene.

abstract：:Two signals are required for meiosis and spore formation in the yeast Saccharomyces cerevisiae: starvation and the MAT products a1 and alpha 2, which determine the a/alpha cell type. These signals lead to increased expression of the IME1 (inducer of meiosis) gene, which is required for sporulation and sporulation-spec...

journal_title：Molecular and cellular biology

authors： Smith HE,Su SS,Neigeborn L,Driscoll SE,Mitchell AP

更新日期：1990-12-01 00:00:00

abstract：:Starting with hybrid cell lines between a Chinese hamster cell EmtA mutant and a Chinese hamster cell EmtB mutant, we have constructed cell lines that are homozygous for mutant alleles at both the emtA locus and the emtB locus, by using a two-step segregation protocol. The EmtA EmtB double mutants are approximately 10...

journal_title：Molecular and cellular biology

authors： Chang S,Wasmuth JJ

更新日期：1983-05-01 00:00:00

abstract：:Precise regulation of cellular proliferation, differentiation, and senescence results in the continuous renewal of the intestinal epithelium with maintenance of a highly ordered tissue architecture. Here we show that an intestine-specific homeobox gene, Cdx2, is a transcription factor that regulates both proliferation...

journal_title：Molecular and cellular biology

authors： Suh E,Traber PG

更新日期：1996-02-01 00:00:00

abstract：:A mutant of Saccharomyces cerevisiae defective in the S-adenosylmethionine (AdoMet)-dependent methyltransferase step of diphthamide biosynthesis was selected by intracellular expression of the F2 fragment of diphtheria toxin (DT) and shown to belong to complementation group DPH5. The DPH5 gene was cloned, sequenced, a...

journal_title：Molecular and cellular biology

authors： Mattheakis LC,Shen WH,Collier RJ

更新日期：1992-09-01 00:00:00

abstract：:In Aspergillus nidulans, a fungus that possesses negligible, if any, levels of methylation in its genome, low concentrations of 5-azacytidine (5-AC) convert a high percentage of the cell population to fluffy phenotypic variants through a heritable modification of a single nuclear gene (M. Tamame, F. Antequera, J. R. V...

journal_title：Molecular and cellular biology

authors： Tamame M,Antequera F,Santos E

更新日期：1988-08-01 00:00:00

abstract：:The retinoblastoma tumor suppressor protein (RB) is a negative regulator of the cell cycle that inhibits both G(1) and S-phase progression. While RB-mediated G(1) inhibition has been extensively studied, the mechanism utilized for S-phase inhibition is unknown. To delineate the mechanism through which RB inhibits DNA ...

journal_title：Molecular and cellular biology

authors： Sever-Chroneos Z,Angus SP,Fribourg AF,Wan H,Todorov I,Knudsen KE,Knudsen ES

更新日期：2001-06-01 00:00:00

abstract：:The sodium/iodide symporter (NIS) is a plasma membrane protein that mediates active iodide transport in thyroid and mammary cells. It is a prerequisite for radioiodide treatment of thyroid cancer and a promising diagnostic and therapeutic tool for breast cancer. We investigated the molecular mechanisms governing NIS e...

journal_title：Molecular and cellular biology

authors： Dentice M,Luongo C,Elefante A,Romino R,Ambrosio R,Vitale M,Rossi G,Fenzi G,Salvatore D

更新日期：2004-09-01 00:00:00

abstract：:Temperature-sensitive mutants of TFIIB that are defective for essential interactions were isolated. One mutation (G204D) results in disruption of a protein-protein contact between TFIIB and TATA binding protein (TBP), while the other (K272I) disrupts an interaction between TFIIB and DNA. The TBP gene was mutagenized, ...

journal_title：Molecular and cellular biology

authors： Buratowski RM,Downs J,Buratowski S

更新日期：2002-12-01 00:00:00

abstract：:Histone H3 lysine 9 (H3-K9) methylation has been shown to correlate with transcriptional repression and serve as a specific binding site for heterochromatin protein 1 (HP1). In this study, we investigated the relationship between H3-K9 methylation, transcriptional repression, and HP1 recruitment by comparing the effec...

journal_title：Molecular and cellular biology

authors： Stewart MD,Li J,Wong J

更新日期：2005-04-01 00:00:00

abstract：:Activation of canonical Wnt signaling inhibits brown adipogenesis of cultured cells by impeding induction of PPARgamma and C/EBPalpha. Although enforced expression of these adipogenic transcription factors restores lipid accumulation and expression of FABP4 in Wnt-expressing cells, additional expression of PGC-1alpha ...

journal_title：Molecular and cellular biology

authors： Kang S,Bajnok L,Longo KA,Petersen RK,Hansen JB,Kristiansen K,MacDougald OA

更新日期：2005-02-01 00:00:00

abstract：:In the present study we have analyzed the genetic regulation of increased expression of transformation-associated traits, a process termed progression, in adenovirus type 5 (Ad5)-transformed secondary rat embryo cells. Somatic cell hybrids were formed between a highly progressed neomycin-resistant Ad5-transformed clon...

journal_title：Molecular and cellular biology

authors： Duigou GJ,Babiss LE,Iman DS,Shay JW,Fisher PB

更新日期：1990-05-01 00:00:00

abstract：:In yeast, environmental stresses provoke sudden and dramatic increases in gene expression at stress-inducible loci. Stress gene transcription is accompanied by the transient eviction of histones from the promoter and the transcribed regions of these genes. We found that mutants defective in subunits of the INO80 compl...

journal_title：Molecular and cellular biology

authors： Klopf E,Paskova L,Solé C,Mas G,Petryshyn A,Posas F,Wintersberger U,Ammerer G,Schüller C

更新日期：2009-09-01 00:00:00

abstract：:Mitoferrin 1 (Mfrn1; Slc25a37) and mitoferrin 2 (Mfrn2; Slc25a28) function as essential mitochondrial iron importers for heme and Fe/S cluster biogenesis. A genetic deficiency of Mfrn1 results in a profound hypochromic anemia in vertebrate species. To map the cis-regulatory modules (CRMs) that control expression of th...

journal_title：Molecular and cellular biology

authors： Amigo JD,Yu M,Troadec MB,Gwynn B,Cooney JD,Lambert AJ,Chi NC,Weiss MJ,Peters LL,Kaplan J,Cantor AB,Paw BH

更新日期：2011-04-01 00:00:00

abstract：:In this report, we demonstrate that myogenic cultures inhibited from differentiating by treatment with fibroblast growth factor or transforming growth factor beta show reduced levels of MyoD1 mRNA. Although this repression may contribute to the inhibition of myogenesis by growth factors, additional regulatory pathways...

journal_title：Molecular and cellular biology

authors： Vaidya TB,Rhodes SJ,Taparowsky EJ,Konieczny SF

更新日期：1989-08-01 00:00:00

abstract：:In Saccharomyces cerevisiae, the intracellular concentration of trehalose increases rapidly in response to many environmental stresses, including heat shock. These high trehalose levels have been correlated with tolerance to adverse conditions and led to the model that trehalose functions as a chemical cochaperone. He...

journal_title：Molecular and cellular biology

authors： Conlin LK,Nelson HC

更新日期：2007-02-01 00:00:00

abstract：:Entry into mitosis is controlled by the cyclin-dependent kinase CDK1 and can be delayed in response to DNA damage. In some systems, such G(2)/M arrest has been shown to reflect the stabilization of inhibitory phosphorylation sites on CDK1. In human cells, full G(2) arrest appears to involve additional mechanisms. We d...

journal_title：Molecular and cellular biology

authors： Badie C,Itzhaki JE,Sullivan MJ,Carpenter AJ,Porter AC

更新日期：2000-04-01 00:00:00

abstract：:We have isolated and subcloned three separate segments of human DNA which share strong sequence homology with a previously sequenced gene encoding a type I keratin, K14 (50 kilodaltons). Restriction endonuclease mapping has demonstrated that these three genes are tightly linked chromosomally, whereas the K14 gene appe...

journal_title：Molecular and cellular biology

authors： RayChaudhury A,Marchuk D,Lindhurst M,Fuchs E

更新日期：1986-02-01 00:00:00

abstract：:Mdm2, a regulator of the tumor suppressor p53, is frequently overexpressed in human malignancies. Mdm2 also has unresolved, p53-independent functions that contribute to tumorigenesis. Here, we show that increased Mdm2 expression induced chromosome/chromatid breaks and delayed DNA double-strand break repair in cells la...

journal_title：Molecular and cellular biology

authors： Bouska A,Lushnikova T,Plaza S,Eischen CM

更新日期：2008-08-01 00:00:00

abstract：:To study DNA topological requirements for homologous recombination in plants, we have constructed pairs of plasmids that contain nonoverlapping deletions in the neomycin phosphotransferase gene [APH(3')II], which, when intact, confers kanamycin resistance to plant cells. Protoplasts isolated from Nicotiana tabacum wer...

journal_title：Molecular and cellular biology

authors： Baur M,Potrykus I,Paszkowski J

更新日期：1990-02-01 00:00:00

abstract：:RNA editing in higher-plant chloroplasts involves C-to-U conversions at specific sites. Although in vivo analyses have been performed, little is known about the biochemical aspects of chloroplast editing reactions. Here we improved our original in vitro system and devised a procedure for preparing active chloroplast e...

journal_title：Molecular and cellular biology

authors： Miyamoto T,Obokata J,Sugiura M

更新日期：2002-10-01 00:00:00

abstract：:In self-fertile strains of the fission yeast Schizosaccharomyces pombe, nitrogen starvation initiates a program of sexual development in which cells express mating pheromones and receptors, arrest cell cycle progression in G1, and conjugate. This process is dependent on Rum1, an inhibitor of the Cdc2-Cdc13 and Cdc2-Ci...

journal_title：Molecular and cellular biology

authors： Wu L,Russell P

更新日期：1997-01-01 00:00:00

abstract：:Tie1 is an orphan receptor tyrosine kinase that is expressed almost exclusively in endothelial cells and that is required for normal embryonic vascular development. Genetic studies suggest that Tie1 promotes endothelial cell survival, but other studies have suggested that the Tie1 kinase has little to no activity, and...

journal_title：Molecular and cellular biology

authors： Kontos CD,Cha EH,York JD,Peters KG

更新日期：2002-03-01 00:00:00

abstract：:The divergently transcribed DIT1 and DIT2 genes of Saccharomyces cerevisiae, which belong to the mid-late class of sporulation-specific genes, are subject to Ssn6-Tup1-mediated repression in mitotic cells. The Ssn6-Tup1 complex, which is required for repression of diverse sets of coordinately regulated genes, is known...

journal_title：Molecular and cellular biology

authors： Rothfels K,Tanny JC,Molnar E,Friesen H,Commisso C,Segall J

更新日期：2005-08-01 00:00:00

abstract：:CAP, a protein from Saccharomyces cerevisiae that copurifies with adenylyl cyclase, appears to be required for yeast cells to be fully responsive to RAS proteins. CAP also appears to be required for normal cell morphology and responsiveness to nutrient deprivation and excess. We describe here a molecular and phenotypi...

journal_title：Molecular and cellular biology

authors： Gerst JE,Ferguson K,Vojtek A,Wigler M,Field J

更新日期：1991-03-01 00:00:00

abstract：:Cellular levels of diadenosine tetraphosphate (Ap4A) and adenosine tetraphospho-guanosine (Ap4G) were specifically measured during the cell cycle of Physarum polycephalum by a high-pressure liquid chromatographic method. Ap4A was also measured indirectly by a coupled phosphodiesterase-luciferase assay. No cell cycle-s...

journal_title：Molecular and cellular biology

authors： Garrison PN,Mathis SA,Barnes LD

更新日期：1986-04-01 00:00:00

abstract：:Methyl-accepting assays and a sensitive method for labeling specific CpG sites have been used to show that the DNA of F9 embryonal carcinoma cells decreases in 5-methylcytosine content by ca. 9% during retinoic acid-induced differentiation, whereas the DNA of dimethyl sulfoxide-induced Friend murine erythroleukemia (M...

journal_title：Molecular and cellular biology

authors： Bestor TH,Hellewell SB,Ingram VM

更新日期：1984-09-01 00:00:00

abstract：:Gene expression results from the coordinated actions of transcription factor proteins and coregulators. Estrogen receptor alpha (ERalpha) is a ligand-activated transcription factor that can both activate and repress the expression of genes. Activation of transcription by estrogen-bound ERalpha has been studied in deta...

journal_title：Molecular and cellular biology

authors： Ellison-Zelski SJ,Solodin NM,Alarid ET

更新日期：2009-09-01 00:00:00

abstract：:When exposed to 5-azacytidine, marrow stromal cells from active long-term marrow cultures and cell lines derived from simian virus 40-transformed stromal cells rapidly upregulated c-abl and interleukin-6 transcripts while downregulating the expression of collagen I, a major matrix protein. Similar effects occurred wit...

journal_title：Molecular and cellular biology

authors： Andrews DF 3rd,Nemunaitis J,Tompkins C,Singer JW

更新日期：1989-06-01 00:00:00

abstract：:To determine if Neu is dominant over transforming growth factor beta (TGF-beta), we crossed mouse mammary tumor virus (MMTV)-Neu mice with MMTV-TGF-beta1(S223/225) mice expressing active TGF-beta1 in the mammary gland. Bigenic (NT) and Neu-induced mammary tumors developed with a similar latency. The bigenic tumors and...

journal_title：Molecular and cellular biology

authors： Muraoka RS,Koh Y,Roebuck LR,Sanders ME,Brantley-Sieders D,Gorska AE,Moses HL,Arteaga CL

更新日期：2003-12-01 00:00:00

abstract：:We have used extrachromosomal substrates carrying immunoglobulin heavy-chain S mu and S gamma 3 switch region sequences to study activation and targeting of recombination by a transcriptional enhancer element. Substrates are transiently introduced into activated primary murine B cells, in which recombination involving...

journal_title：Molecular and cellular biology

authors： Leung H,Maizels N

更新日期：1994-02-01 00:00:00