Biological and biochemical functions of RNA in the tetrahymena telomerase holoenzyme.

abstract：:In Schizosaccharomyces pombe, MBF is a DNA-binding complex suspected to activate the transcription of genes necessary for entry into S phase. The MBF complex contains both p85cdc10 and p72res1/sct1. To obtain a better understanding of how the MBF complex regulates gene expression at the G1/S transition, we have perfor...

journal_title：Molecular and cellular biology

authors： Ayté J,Leis JF,Herrera A,Tang E,Yang H,DeCaprio JA

更新日期：1995-05-01 00:00:00

abstract：:Bone metastasis is the hallmark of progressive and castration-resistant prostate cancers. MicroRNA 1 (miR-1) levels are decreased in clinical samples of primary prostate cancer and further reduced in metastases. SRC has been implicated as a critical factor in bone metastasis, and here we show that SRC is a direct targ...

journal_title：Molecular and cellular biology

authors： Liu YN,Yin J,Barrett B,Sheppard-Tillman H,Li D,Casey OM,Fang L,Hynes PG,Ameri AH,Kelly K

更新日期：2015-06-01 00:00:00

abstract：:Initiation of T-lymphocyte-mediated immune responses involves two cellular processes: entry into the cell cycle (G(0)-->G(1)) for clonal proliferation and coordinated changes in surface and secreted molecules that mediate effector functions. However, a point during G(0)-->G(1) beyond which T cells are committed to ent...

journal_title：Molecular and cellular biology

authors： Lea NC,Orr SJ,Stoeber K,Williams GH,Lam EW,Ibrahim MA,Mufti GJ,Thomas NS

更新日期：2003-04-01 00:00:00

abstract：:We have exploited the Escherichia coli lac operator/repressor system as a means to regulate the expression of a mammalian tRNA gene in vivo and in vitro. An oligonucleotide containing a lac operator (lacO) site was cloned immediately upstream of a human serine amber suppressor (Su+) tRNA gene. Insertion of a single la...

journal_title：Molecular and cellular biology

authors： Syroid DE,Tapping RI,Capone JP

更新日期：1992-10-01 00:00:00

abstract：:The activity of the tumor suppressor p53 is tightly controlled by its main negative regulator, Mdm2, which inhibits p53's transcriptional activity and targets it for degradation via the proteasome pathway. The closely related Mdm2 homolog, MdmX, is also considered to be a general inhibitor of transactivation by p53, t...

journal_title：Molecular and cellular biology

authors： Biderman L,Poyurovsky MV,Assia Y,Manley JL,Prives C

更新日期：2012-04-01 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：:Expression of vascular endothelial growth factor (VEGF) increases in cancer cells during hypoxia. Herein, we report that the MDM2 oncoprotein plays a role in hypoxia-mediated VEGF upregulation. In studying the characteristics of MDM2 and VEGF expression in neuroblastoma cells, we found that hypoxia induced significant...

journal_title：Molecular and cellular biology

authors： Zhou S,Gu L,He J,Zhang H,Zhou M

更新日期：2011-12-01 00:00:00

abstract：:E3 ubiquitin ligases, which target specific molecules for proteolytic destruction, have emerged as key regulators of immune functions. Several E3 ubiquitin ligases, including c-Cbl, Cbl-b, GRAIL, Itch, and Nedd4, have been shown to negatively regulate T-cell activation. Here, we report that the HECT-type E3 ligase AIP...

journal_title：Molecular and cellular biology

authors： Chen A,Gao B,Zhang J,McEwen T,Ye SQ,Zhang D,Fang D

更新日期：2009-10-01 00:00:00

abstract：:The Polycomb group proteins are transcriptional repressors that are thought to act through multimeric nuclear complexes. We show that ph and Psc coprecipitate with Pc from nuclear extracts. We have analyzed the domains required for the association of Psc with ph and Pc by using the yeast two-hybrid system and an in vi...

journal_title：Molecular and cellular biology

authors： Kyba M,Brock HW

更新日期：1998-05-01 00:00:00

abstract：:We isolated a Drosophila fickleP (ficP) mutant with a shortened copulatory duration and reduced adult-stage life span. The reduced copulatory duration is ascribable to incomplete fusion of the left and right halves of the apodeme that holds the penis during copulation. ficP is an intronic mutation occurring in the Btk...

journal_title：Molecular and cellular biology

authors： Baba K,Takeshita A,Majima K,Ueda R,Kondo S,Juni N,Yamamoto D

更新日期：1999-06-01 00:00:00

abstract：:NMYC is a gene whose amplification and overexpression have been implicated in the generation of certain human malignancies. Little is known of how the expression of NMYC is normally controlled. We have therefore characterized transcription from the gene and the structure and stability of the resulting mRNAs. Transcrip...

journal_title：Molecular and cellular biology

authors： Stanton LW,Bishop JM

更新日期：1987-12-01 00:00:00

abstract：:Stage-specific transcriptional programs are an integral feature of cell cycle regulation. In the budding yeast Saccharomyces cerevisiae, over 120 genes are coordinately induced in late G(1) phase by two heterodimeric transcription factors called SBF and MBF. Activation of SBF and MBF is an upstream initiator of key ce...

journal_title：Molecular and cellular biology

authors： Costanzo M,Schub O,Andrews B

更新日期：2003-07-01 00:00:00

abstract：:Swi4 and Swi6 form a complex which is required for Start-dependent activation of HO and for high-level expression of G1 cyclin genes CLN1 and CLN2. To identify other regulators of this pathway, we screened for dominant, recessive, conditional, and allele-specific suppressors of swi4 mutants. We isolated 16 recessive s...

journal_title：Molecular and cellular biology

authors： Lycan D,Mikesell G,Bunger M,Breeden L

更新日期：1994-11-01 00:00:00

abstract：:MOT1 is an essential Saccharomyces cerevisiae protein and a member of the SNF2/SWI2 family of ATPases. MOT1 functions by removing TATA-binding protein (TBP) from DNA, and as a consequence, MOT1 can regulate transcription both in vitro and in vivo. Here we describe the in vivo and in vitro activities of MOT1 deletion a...

journal_title：Molecular and cellular biology

authors： Auble DT,Wang D,Post KW,Hahn S

更新日期：1997-08-01 00:00:00

abstract：:Ret/ptc2 is a constitutively active, oncogenic form of the c-Ret receptor tyrosine kinase. Like the other papillary thyroid carcinoma forms of Ret, Ret/ptc2 is activated through fusion of the Ret tyrosine kinase domain to the dimerization domain of another protein. Investigation of requirements for Ret/ptc2 mitogenic ...

journal_title：Molecular and cellular biology

authors： Durick K,Gill GN,Taylor SS

更新日期：1998-04-01 00:00:00

abstract：:Unique single-stranded regions of simian virus 40 DNA, phage M13 virion DNA, and several homopolymers were used as templates for the synthesis of (p)ppRNA-DNA chains by CV-1 cell DNA primase-DNA polymerase alpha. Intact RNA primers, specifically labeled with an RNA capping enzyme, were typically 6 to 8 ribonucleotides...

journal_title：Molecular and cellular biology

authors： Yamaguchi M,Hendrickson EA,DePamphilis ML

更新日期：1985-05-01 00:00:00

abstract：:Determining the roles of Rel/NF-kappaB transcription factors in mouse skin development with loss-of-function mutants has been limited by redundancy among these proteins and by embryonic lethality associated with the absence of RelA. Using mice lacking RelA and c-rel, which survive throughout embryogenesis on a tumor n...

journal_title：Molecular and cellular biology

authors： Gugasyan R,Voss A,Varigos G,Thomas T,Grumont RJ,Kaur P,Grigoriadis G,Gerondakis S

更新日期：2004-07-01 00:00:00

abstract：:Histone acetylation provides a switch between transcriptionally repressive and permissive chromatin. By regulating the chromatin structure at specific promoters, histone acetyltransferases (HATs) carry out important functions during differentiation and development of higher eukaryotes. HAT complexes are present in org...

journal_title：Molecular and cellular biology

authors： Guelman S,Suganuma T,Florens L,Weake V,Swanson SK,Washburn MP,Abmayr SM,Workman JL

更新日期：2006-10-01 00:00:00

abstract：:The multisubunit yeast transcription factor IIIC (TFIIIC) is a multifunctional protein required for promoter recognition, transcription factor IIIB recruitment, and chromatin antirepression. We report the isolation and characterization of TFC7, an essential gene encoding the 55-kDa polypeptide, tau55, present in affin...

journal_title：Molecular and cellular biology

authors： Manaud N,Arrebola R,Buffin-Meyer B,Lefebvre O,Voss H,Riva M,Conesa C,Sentenac A

更新日期：1998-06-01 00:00:00

abstract：:Thyroid hormone receptors are encoded by the TRalpha (NR1A1) and TRbeta (NR1A2) loci. These genes are transcribed into multiple variants whose functions are unclear. Analysis by gene inactivation in mice has provided new insights into the functional complexity of these products. Different strategies designed to modify...

journal_title：Molecular and cellular biology

authors： Gauthier K,Plateroti M,Harvey CB,Williams GR,Weiss RE,Refetoff S,Willott JF,Sundin V,Roux JP,Malaval L,Hara M,Samarut J,Chassande O

更新日期：2001-07-01 00:00:00

abstract：:Sphingolipid metabolism is implicated to play an important role in apoptosis. Here we show that dihydrosphingosine (DHS) and phytosphingosine (PHS), two major sphingoid bases of fungi, have potent fungicidal activity with remarkably high structural and stereochemical specificity against Aspergillus nidulans. In fact, ...

journal_title：Molecular and cellular biology

authors： Cheng J,Park TS,Chio LC,Fischl AS,Ye XS

更新日期：2003-01-01 00:00:00

abstract：:By injecting the appropriately constructed plasmids into one-cell Xenopus embryos, we determined that the 3' region of the maternal Xenopus Eg2 mRNA confers instability on the chimeric mRNA transcribed from these plasmids. This instability, like that of the maternal Eg2 transcript, was abolished by treatment of the em...

journal_title：Molecular and cellular biology

authors： Bouvet P,Paris J,Phillippe M,Osborne HB

更新日期：1991-06-01 00:00:00

abstract：:Nat4, also designated NatD, was previously shown to acetylate the N termini of histones H2A and H4, which have SGGKG and SGRGK N termini (O. K. Song, X. Wang, J. H. Waterborg, and R. Sternglanz, J. Biol. Chem. 278:38109-38112, 2003). The analysis of chimeric proteins with various N-terminal segments of histone H4 fuse...

journal_title：Molecular and cellular biology

authors： Polevoda B,Hoskins J,Sherman F

更新日期：2009-06-01 00:00:00

abstract：:By using a retrovirus-derived vector system, we generated derivatives of the human colon cancer cell line HT29 that stably overexpress a full-length cDNA encoding the beta 1 isoform of rat protein kinase C (PKC). Two of these cell lines, PKC6 and PKC7, displayed an 11- to 15-fold increase in PKC activity when compared...

journal_title：Molecular and cellular biology

authors： Choi PM,Tchou-Wong KM,Weinstein IB

更新日期：1990-09-01 00:00:00

abstract：:The tyrosinase family comprises three members, tyrosinase (Tyr), tyrosinase-related protein 1 (Tyrp1), and dopachrome tautomerase (Dct). Null mutations and deletions at the Tyr and Tyrp1 loci are known and phenotypically affect coat color due to the absence of enzyme or intracellular mislocalization. At the Dct locus,...

journal_title：Molecular and cellular biology

authors： Guyonneau L,Murisier F,Rossier A,Moulin A,Beermann F

更新日期：2004-04-01 00:00:00

abstract：:G protein-coupled receptors (GPCRs) have been shown to stimulate extracellular regulated kinases (ERKs) through a number of linear pathways that are initiated by G(q/11) or G(i) proteins. We studied signaling to the ERK cascade by receptors that simultaneously activate both G protein subfamilies. In HEK293T cells, bra...

journal_title：Molecular and cellular biology

authors： Blaukat A,Barac A,Cross MJ,Offermanns S,Dikic I

更新日期：2000-09-01 00:00:00

abstract：:The stability of mRNA influences the abundance of cellular transcripts and proteins. Deadenylases play critical roles in mRNA turnover and thus are important for the regulation of various biological events. Here, we report the identification and characterization of CCR4b/CNOT6L, which is homologous to yeast CCR4 mRNA ...

journal_title：Molecular and cellular biology

authors： Morita M,Suzuki T,Nakamura T,Yokoyama K,Miyasaka T,Yamamoto T

更新日期：2007-07-01 00:00:00

abstract：:Expression of the Saccharomyces cerevisiae CYC1 gene produces mRNA with more than 20 different 5' ends. A derivative of the CYC1 gene (CYC1-157) was constructed with a deletion of a portion of the CYC1 5'-noncoding region, which includes the sites at which many of the CYC1 mRNAs 5' ends map. A 54-mer double-stranded o...

journal_title：Molecular and cellular biology

authors： McNeil JB,Smith M

更新日期：1985-12-01 00:00:00

abstract：:The transcriptional coactivator BOB.1/OBF.1 confers B-cell specificity on the transcription factors Oct1 and Oct2 at octamer site-containing promoters. A hallmark of the BOB.1/OBF.1 mutation in the mouse is the absence of germinal center development in secondary lymphoid organs, demonstrating the requirement for BOB.1...

journal_title：Molecular and cellular biology

authors： Hess J,Nielsen PJ,Fischer KD,Bujard H,Wirth T

更新日期：2001-03-01 00:00:00

abstract：:The mitochondrial genome of trypanosomes is composed of thousands of topologically interlocked circular DNA molecules that form the kinetoplast DNA (kDNA). Most genes encoded by the kDNA require a posttranscriptional modification process called RNA editing to form functional mRNAs. Here, we show that alternative editi...

journal_title：Molecular and cellular biology

authors： Ochsenreiter T,Anderson S,Wood ZA,Hajduk SL

更新日期：2008-09-01 00:00:00