Identification of developmentally specific enhancers for Tsix in the regulation of X chromosome inactivation.

abstract：:The structure of replication origins in metazoans is only nominally similar to that in model organisms, such as Saccharomyces cerevisiae. By contrast to the compact origins of budding yeast, in metazoans multiple elements act as replication start sites or control replication efficiency. We first reported that replicat...

journal_title：Molecular and cellular biology

authors： Liu G,Malott M,Leffak M

更新日期：2003-03-01 00:00:00

abstract：:As a prominent characteristic of cell life, the regulation of cell quiescence is important for proper development, regeneration, and stress resistance and may play a role in certain degenerative diseases. However, the mechanism underlying quiescence remains largely unknown. Encysted embryos of Artemia are useful for s...

journal_title：Molecular and cellular biology

authors： Dai L,Ye S,Li HW,Chen DF,Wang HL,Jia SN,Lin C,Yang JS,Yang F,Nagasawa H,Yang WJ

更新日期：2017-03-17 00:00:00

abstract：:We investigated the role of cytoplasmic and anchor domains of type II glycoproteins in intracellular transport, oligomerization, and endocytosis by expressing the wild-type and chimeric genes in mammalian cells. Chimeric genes were constructed by exchanging the DNA segments that encode the cytoplasmic and anchor domai...

journal_title：Molecular and cellular biology

authors： Kundu A,Jabbar MA,Nayak DP

更新日期：1991-05-01 00:00:00

abstract：:The Saccharomyces cerevisiae CDC25 gene and closely homologous genes in other eukaryotes encode guanine nucleotide exchange factors for Ras proteins. We have determined the minimal region of the budding yeast CDC25 gene capable of activity in vivo. The region required for full biological activity is approximately 450 ...

journal_title：Molecular and cellular biology

authors： Lai CC,Boguski M,Broek D,Powers S

更新日期：1993-03-01 00:00:00

abstract：:We demonstrate that the immunoglobulin heavy-chain enhancer functions as the promoter for I mu sterile transcription. The enhancer itself, when placed 5' to the bacterial cat or neo genes, is able to direct transcription by using heterogeneous start sites that are generally the same as those found with bona fide I mu ...

journal_title：Molecular and cellular biology

authors： Su LK,Kadesch T

更新日期：1990-06-01 00:00:00

abstract：:Drosophila hsp70 genes have an RNA polymerase II molecule paused at their 5' ends in uninduced cells. In this study we have shown that this pausing also occurs on other heat shock and constitutively expressed genes. We propose that a rate-limiting step in early elongation occurs in many Drosophila genes and may be a t...

journal_title：Molecular and cellular biology

authors： Rougvie AE,Lis JT

更新日期：1990-11-01 00:00:00

abstract：:We sought to study the binding constraints placed on the nine-zinc-finger protein transcription factor IIIA (TFIIIA) by a histone octamer. To this end, five overlapping fragments of the Xenopus laevis oocyte and somatic 5S rRNA genes were reconstituted into nucleosomes, and it was subsequently shown that nucleosome tr...

journal_title：Molecular and cellular biology

authors： Howe L,Ausió J

更新日期：1998-03-01 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：:The J domain of simian virus 40 (SV40) large T antigen is required for efficient DNA replication and transformation. Despite previous reports demonstrating the promiscuity of J domains in heterologous systems, results presented here show the requirement for specific J-domain sequences in SV40 large-T-antigen-mediated ...

journal_title：Molecular and cellular biology

authors： Sullivan CS,Tremblay JD,Fewell SW,Lewis JA,Brodsky JL,Pipas JM

更新日期：2000-08-01 00:00:00

abstract：:A single-base deletion within the protein-coding region of the adenovirus type 5 early region 1A (E1A) genes, 399 bases downstream from the transcription start site, depresses transcription to 2% of the wild-type rate. Complementation studies demonstrated that this was due to two effects of the mutation: first, inacti...

journal_title：Molecular and cellular biology

authors： Osborne TF,Arvidson DN,Tyau ES,Dunsworth-Browne M,Berk AJ

更新日期：1984-07-01 00:00:00

abstract：:YY1 is a multifunctional transcription factor that acts as an activator or repressor in different contexts. YY1 binds to multiple sites in the mouse c-fos promoter, inducing at each site a sharp DNA bend. Binding of YY1 to a site situated between the cyclic AMP response element (CRE) and the TATA box bends the DNA in ...

journal_title：Molecular and cellular biology

authors： Natesan S,Gilman M

更新日期：1995-11-01 00:00:00

abstract：:Nuclear expression and consequent biological action of the eukaryotic NF-kappa B transcription factor complex are tightly regulated through its cytoplasmic retention by an ankyrin-rich inhibitory protein termed I kappa B alpha. I kappa B alpha specifically binds to and masks the nuclear localization signal of the RelA...

journal_title：Molecular and cellular biology

authors： Sun S,Elwood J,Greene WC

更新日期：1996-03-01 00:00:00

abstract：:Intestinal alkaline phosphatase (IAP) is the most ancestral of the tissue-specific members of the AP gene family. Several studies have suggested an absorptive function for IAP, but in vivo data to this effect have been lacking. We inactivated the mouse IAP gene in embryo-derived stem cells and generated mice homozygou...

journal_title：Molecular and cellular biology

authors： Narisawa S,Huang L,Iwasaki A,Hasegawa H,Alpers DH,Millán JL

更新日期：2003-11-01 00:00:00

abstract：:Regulation of the endogenous mouse metallothionein I and II (MT-I and MT-II) genes by heavy metals and glucocorticoids was studied in cultured mouse cells. Both mRNAs were measured simultaneously by solution hybridization with [3H]MT-I cDNA and [32P]MT-II cDNA, and the absolute amount of each mRNA was calculated by us...

journal_title：Molecular and cellular biology

authors： Yagle MK,Palmiter RD

更新日期：1985-02-01 00:00:00

abstract：:The tetraspanins are a family of integral membrane proteins with four transmembrane domains. These molecules form multimolecular networks on the surfaces of many different cell types. Gene-targeting studies have revealed a role for tetraspanins in B- and T-lymphocyte function. We have isolated and deleted a novel tetr...

journal_title：Molecular and cellular biology

authors： Tarrant JM,Groom J,Metcalf D,Li R,Borobokas B,Wright MD,Tarlinton D,Robb L

更新日期：2002-07-01 00:00:00

abstract：:Polycomb group proteins mediate heritable transcriptional silencing and function through multiprotein complexes that methylate and ubiquitinate histones. The 600-kDa E(Z)/ESC complex, also known as Polycomb repressive complex 2 (PRC2), specifically methylates histone H3 lysine 27 (H3 K27) through the intrinsic histone...

journal_title：Molecular and cellular biology

authors： Tie F,Stratton CA,Kurzhals RL,Harte PJ

更新日期：2007-03-01 00:00:00

abstract：:Eight strains of Chinese hamster ovary (CHO) cells having an assembly-defective beta-tubulin were found among revertants of strain Cmd 4, a mutant with a conditional lethal mutation in a beta-tubulin gene (F. Cabral, M. E. Sobel, and M. M. Gottesman, Cell 20:29-36, 1980). The altered beta-tubulins in these strains hav...

journal_title：Molecular and cellular biology

authors： Boggs B,Cabral F

更新日期：1987-08-01 00:00:00

abstract：:Multiple biological functions have been ascribed to the Ras-related G protein R-Ras. These include the ability to transform NIH 3T3 fibroblasts, the promotion of cell adhesion, and the regulation of apoptotic responses in hematopoietic cells. To investigate the signaling mechanisms responsible for these biological phe...

journal_title：Molecular and cellular biology

authors： Osada M,Tolkacheva T,Li W,Chan TO,Tsichlis PN,Saez R,Kimmelman AC,Chan AM

更新日期：1999-09-01 00:00:00

abstract：:The activities of the related Abl and Arg nonreceptor tyrosine kinases are kept under tight control in cells, but exposure to several different stimuli results in a two- to fivefold stimulation of kinase activity. Following the breakdown of inhibitory intramolecular interactions, Abl activation requires phosphorylatio...

journal_title：Molecular and cellular biology

authors： Tanis KQ,Veach D,Duewel HS,Bornmann WG,Koleske AJ

更新日期：2003-06-01 00:00:00

abstract：:Mutations induced by UVB (313-nm) radiation, a wavelength in the region of peak effectiveness for sunlight-induced skin cancer in humans, have been analyzed at the sequence level in simian cells by using a plasmid shuttle vector (pZ189). We find that significant differences exist between the types of mutations induced...

journal_title：Molecular and cellular biology

authors： Keyse SM,Amaudruz F,Tyrrell RM

更新日期：1988-12-01 00:00:00

abstract：:A transgenic gpt+ Chinese hamster cell line (G12) was found to be susceptible to carcinogenic nickel-induced inactivation of gpt expression without mutagenesis or deletion of the transgene. Many nickel-induced 6-thioguanine-resistant variants spontaneously reverted to actively express gpt, as indicated by both reversi...

journal_title：Molecular and cellular biology

authors： Lee YW,Klein CB,Kargacin B,Salnikow K,Kitahara J,Dowjat K,Zhitkovich A,Christie NT,Costa M

更新日期：1995-05-01 00:00:00

abstract：:The products of c-fos and c-jun (Fos and Jun) function in gene regulation by interacting with the AP-1 binding site. Here we have examined the contribution of Fos and Jun toward transcriptional activity by using Fos and Jun polypeptides purified from Escherichia coli. Fos contained a transcriptional activation domain ...

journal_title：Molecular and cellular biology

authors： Abate C,Luk D,Gagne E,Roeder RG,Curran T

更新日期：1990-10-01 00:00:00

abstract：:Mutations were introduced in 7 kilobases of 5'-flanking rat alpha 1-fetoprotein (AFP) genomic DNA, linked to the chloramphenicol acetyltransferase gene. AFP promoter activity and its repression by a glucocorticoid hormone were assessed by stable and transient expression assays. Stable transfection assays were more sen...

journal_title：Molecular and cellular biology

authors： Guertin M,LaRue H,Bernier D,Wrange O,Chevrette M,Gingras MC,Bélanger L

更新日期：1988-04-01 00:00:00

abstract：:E2F and RB proteins regulate the expression of genes involved in cell cycle progression, apoptosis, differentiation, and development. Recent studies indicate that they function as part of an evolutionarily conserved multiprotein complex termed dREAM/DREAM/LINC. Here we characterize the role of the Drosophila complex, ...

journal_title：Molecular and cellular biology

authors： Lee H,Ragusano L,Martinez A,Gill J,Dimova DK

更新日期：2012-06-01 00:00:00

abstract：:Mediator is a general coactivator complex connecting transcription activators and RNA polymerase II. Recent work has shown that the nuclear receptor-interacting MED1/TRAP220 subunit of Mediator is required for peroxisome proliferator-activated receptor gamma (PPARgamma)-stimulated adipogenesis of mouse embryonic fibro...

journal_title：Molecular and cellular biology

authors： Ge K,Cho YW,Guo H,Hong TB,Guermah M,Ito M,Yu H,Kalkum M,Roeder RG

更新日期：2008-02-01 00:00:00

abstract：:Approximately 30% of human tumors examined for mutations in polymerase beta (pol beta) appear to express pol beta variant proteins (D. Starcevic, S. Dalal, and J. B. Sweasy, Cell Cycle 3:998-1001, 2004). Many of these variants result from a single amino acid substitution. We have previously shown that the K289M and I2...

journal_title：Molecular and cellular biology

authors： Lang T,Dalal S,Chikova A,DiMaio D,Sweasy JB

更新日期：2007-08-01 00:00:00

abstract：:A late region deletion mutant of simian virus 40 (dl5) was previously shown to be deficient in the transport of nuclear RNA. This is a splice junction deletion that has lost the 3' end of an RNA leader, an intervening sequence, and the 5' end of the splice acceptor site on the body of the mRNA. In this report, we anal...

journal_title：Molecular and cellular biology

authors： Villarreal LP,White RT

更新日期：1983-08-01 00:00:00

abstract：:Analysis of a T-cell antigen receptor (TCR) alpha promoter from a variable gene segment (V) revealed a critical GT box element which is also found in upstream regions of several V alpha genes, TCR enhancer, and regulatory elements of other genes. This element is necessary for TCR gene expression and binds several prot...

journal_title：Molecular and cellular biology

authors： Kingsley C,Winoto A

更新日期：1992-10-01 00:00:00

abstract：:Nrdp1 is a RING finger-containing E3 ubiquitin ligase that physically interacts with and regulates steady-state cellular levels of the ErbB3 and ErbB4 receptor tyrosine kinases and has been implicated in the degradation of the inhibitor-of-apoptosis protein BRUCE. Here we demonstrate that the Nrdp1 protein undergoes e...

journal_title：Molecular and cellular biology

authors： Wu X,Yen L,Irwin L,Sweeney C,Carraway KL 3rd

更新日期：2004-09-01 00:00:00

abstract：:In resting cells, the NFAT1 transcription factor is kept inactive in the cytoplasm by phosphorylation on multiple serine residues. These phosphorylated residues are primarily contained within two types of serine-rich motifs, the SRR-1 and SP motifs, which are conserved within the NFAT family. Several different kinases...

journal_title：Molecular and cellular biology

authors： Okamura H,Garcia-Rodriguez C,Martinson H,Qin J,Virshup DM,Rao A

更新日期：2004-05-01 00:00:00