A box H/ACA small nucleolar RNA-like domain at the human telomerase RNA 3' end.

Abstract:

:Simple sequence repeat telomeric DNA is maintained by a specialized reverse transcriptase, telomerase. The integral RNA subunit of telomerase contains a template region that determines the sequence added to chromosome ends. Aside from providing the template, little is known about the role of the telomerase RNA. In addition, no hypotheses have been suggested to account for the striking evolutionary divergence in size and sequence between telomerase RNAs of ciliates, yeasts, and mammals. We show that the two- to threefold increase in size of the mammalian telomerase RNAs relative to ciliate telomerase RNAs is due to the presence of an extra domain resembling a box H/ACA small nucleolar RNA (snoRNA). The human telomerase RNA (hTR) H/ACA domain is essential in vivo for hTR accumulation, hTR 3' end processing, and telomerase activity. By substituting the U64 box H/ACA snoRNA for the hTR H/ACA domain, we demonstrate that a heterologous snoRNA can function to promote chimeric RNA accumulation and 3' end processing but not telomerase activity. In addition, we show that maturation of full-length hTR and its assembly into active telomerase occur from an mRNA promoter-driven RNA polymerase II transcript but not from a U6 snRNA promoter-driven RNA polymerase III transcript. Finally, we show that a small percentage of hTR is associated with nucleoli. These results have implications for the biogenesis and structure of hTR and the human telomerase ribonucleoprotein complex. They also expand the structural and functional diversity of the box H/ACA snoRNA motif.

journal_name

Mol Cell Biol

authors

Mitchell JR,Cheng J,Collins K

doi

10.1128/mcb.19.1.567

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

567-76

issue

1

eissn

0270-7306

issn

1098-5549

journal_volume

19

pub_type

杂志文章
  • DNA bending by retinoid X receptor-containing retinoid and thyroid hormone receptor complexes.

    abstract::Retinoid X receptors (RXR) have been identified as common subunits in the regulation of multiple hormonal signaling pathways. Using circular permutation and phasing analysis of specific response elements, we present evidence that RXR-retinoic acid receptor and RXR-thyroid hormone receptor heterodimer or RXR-RXR homodi...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.13.10.6509

    authors: Lu XP,Eberhardt NL,Pfahl M

    更新日期:1993-10-01 00:00:00

  • cis-acting regulatory elements within gag genes of avian retroviruses.

    abstract::A cis-acting enhancer element has been detected within the gag gene of several avian retroviruses, including Rous sarcoma virus, Fujinami sarcoma virus, and the endogenous Rous-associated virus-0. A consensus enhancer core sequence, GTGGTTTG, is present in all of these viral genomes, approximately 900 bases downstream...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.7.1.388

    authors: Arrigo S,Yun M,Beemon K

    更新日期:1987-01-01 00:00:00

  • Pheromone-dependent G1 cell cycle arrest requires Far1 phosphorylation, but may not involve inhibition of Cdc28-Cln2 kinase, in vivo.

    abstract::In yeast, the pheromone alpha-factor acts as an antiproliferative factor that induces G1 arrest and cellular differentiation. Previous data have indicated that Far1, a factor dedicated to pheromone-induced cell cycle arrest, is under positive and negative posttranslational regulation. Phosphorylation by the pheromone-...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.18.7.3681

    authors: Gartner A,Jovanović A,Jeoung DI,Bourlat S,Cross FR,Ammerer G

    更新日期:1998-07-01 00:00:00

  • Phosphorylation of Par-4 by protein kinase A is critical for apoptosis.

    abstract::Despite distinct dissimilarities, diverse cancers express several common protumorigenic traits. We present here evidence that the proapoptotic protein Par-4 utilizes one such common tumorigenic trait to become selectively activated and induce apoptosis in cancer cells. Elevated protein kinase A (PKA) activity noted in...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/MCB.25.3.1146-1161.2005

    authors: Gurumurthy S,Goswami A,Vasudevan KM,Rangnekar VM

    更新日期:2005-02-01 00:00:00

  • Modular recognition of 5-base-pair DNA sequence motifs by human heat shock transcription factor.

    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

    pub_type: 杂志文章

    doi:10.1128/mcb.11.7.3504

    authors: Cunniff NF,Wagner J,Morgan WD

    更新日期:1991-07-01 00:00:00

  • DNA damage and heat shock dually regulate genes in Saccharomyces cerevisiae.

    abstract::Two Saccharomyces cerevisiae genes isolated in a differential hybridization screening for DNA damage regulation (DDR genes) were also transcriptionally regulated by heat shock treatment. A 0.45-kilobase transcript homologous to the DDRA2 gene and a 1.25-kilobase transcript homologous to the DDR48 gene accumulated afte...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.6.1.90

    authors: McClanahan T,McEntee K

    更新日期:1986-01-01 00:00:00

  • Organization of a Chinese hamster ovary dihydrofolate reductase gene identified by phenotypic rescue.

    abstract::We have constructed a genomic DNA library from a methotrexate-resistant Chinese hamster ovary cell line (CHOC 400) in the cosmid vector pHC79. By utilizing a murine dihydrofolate reductase (DHFR) cDNA clone, we have identified 66 DHFR+ clones among the 11,000 colonies screened by colony hybridization. To isolate a rec...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.3.7.1266

    authors: Milbrandt JD,Azizkhan JC,Greisen KS,Hamlin JL

    更新日期:1983-07-01 00:00:00

  • The product of HUM1, a novel yeast gene, is required for vacuolar Ca2+/H+ exchange and is related to mammalian Na+/Ca2+ exchangers.

    abstract::Calcineurin, or PP2B, plays a critical role in mediating Ca2+-dependent signaling in many cell types. In yeast cells, this highly conserved protein phosphatase regulates aspects of ion homeostasis and cell wall synthesis. We show that calcineurin mutants are sensitive to high concentrations of Mn2+ and identify two ge...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.16.7.3730

    authors: Pozos TC,Sekler I,Cyert MS

    更新日期:1996-07-01 00:00:00

  • Differential regulation of transcription through distinct Suppressor of Hairless DNA binding site architectures during Notch signaling in proneural clusters.

    abstract::In Drosophila melanogaster, achaete (ac) and m8 are model basic helix-loop-helix activator (bHLH A) and repressor genes, respectively, that have the opposite cell expression pattern in proneural clusters during Notch signaling. Previous studies have shown that activation of m8 transcription in specific cells within pr...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/MCB.00003-10

    authors: Cave JW,Xia L,Caudy M

    更新日期:2011-01-01 00:00:00

  • The yes-related cellular gene lyn encodes a possible tyrosine kinase similar to p56lck.

    abstract::With v-yes DNA as the probe, a human cDNA library made from placental RNA was screened under relaxed conditions, and DNA clones derived from a novel genetic locus, termed lyn, were obtained. Nucleotide sequencing revealed that lyn could encode a novel tyrosine kinase that was very similar to mouse T-lymphocyte-specifi...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.7.1.237

    authors: Yamanashi Y,Fukushige S,Semba K,Sukegawa J,Miyajima N,Matsubara K,Yamamoto T,Toyoshima K

    更新日期:1987-01-01 00:00:00

  • Interaction of stat6 and NF-kappaB: direct association and synergistic activation of interleukin-4-induced transcription.

    abstract::Signal transducer and activator of transcription 6 (Stat6) and NF-kappaB are widely distributed transcription factors which are induced by different stimuli and bind to distinct DNA sequence motifs. Interleukin-4 (IL-4), which activates Stat6, synergizes with activators of NF-kappaB to induce IL-4-responsive genes, bu...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.18.6.3395

    authors: Shen CH,Stavnezer J

    更新日期:1998-06-01 00:00:00

  • Polyamines regulate the stability of JunD mRNA by modulating the competitive binding of its 3' untranslated region to HuR and AUF1.

    abstract::Polyamines critically regulate all mammalian cell growth and proliferation by mechanisms such as the repression of growth-inhibitory proteins, including JunD. Decreasing the levels of cellular polyamines stabilizes JunD mRNA without affecting its transcription, but the exact mechanism whereby polyamines regulate JunD ...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/MCB.00807-10

    authors: Zou T,Rao JN,Liu L,Xiao L,Yu TX,Jiang P,Gorospe M,Wang JY

    更新日期:2010-11-01 00:00:00

  • Erk5 participates in neuregulin signal transduction and is constitutively active in breast cancer cells overexpressing ErbB2.

    abstract::The four receptor tyrosine kinases of the ErbB family play essential roles in several physiological processes and have also been implicated in tumor generation and/or progression. Activation of ErbB1/EGFR is mainly triggered by epidermal growth factor (EGF) and other related ligands, while activation of ErbB2, ErbB3, ...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.22.1.270-285.2002

    authors: Esparís-Ogando A,Díaz-Rodríguez E,Montero JC,Yuste L,Crespo P,Pandiella A

    更新日期:2002-01-01 00:00:00

  • Identification of the principal promoter sequence of the c-H-ras transforming oncogene: deletion analysis of the 5'-flanking region by focus formation assay.

    abstract::A number of deletion mutants were isolated, including 5', 3', and internal deletions in the 5'-flanking region of the human cellular oncogene related to the Harvey sarcoma virus (c-H-ras), and their transforming activities were examined in NIH 3T3 cells. DNA sequences which could not be detected without losing transfo...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.7.8.2933

    authors: Honkawa H,Masahashi W,Hashimoto S,Hashimoto-Gotoh T

    更新日期:1987-08-01 00:00:00

  • MEKK1 transduces activin signals in keratinocytes to induce actin stress fiber formation and migration.

    abstract::Activins and other members of the transforming growth factor beta family play a critical role in morphological changes of the epidermis that require epithelial cell movement. We investigated the molecular pathways in the transmission of activin signals that lead to actin reorganization and epithelial cell migration. W...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/MCB.25.1.60-65.2005

    authors: Zhang L,Deng M,Parthasarathy R,Wang L,Mongan M,Molkentin JD,Zheng Y,Xia Y

    更新日期:2005-01-01 00:00:00

  • Specific sequences in the fragile X syndrome protein FMR1 and the FXR proteins mediate their binding to 60S ribosomal subunits and the interactions among them.

    abstract::Fragile X syndrome, the most common form of hereditary mental retardation, usually results from lack of expression of the FMR1 gene. The FMR1 protein is a cytoplasmic RNA-binding protein. The RNA-binding activity of FMR1 is an essential feature of FMR1, as fragile X syndrome can also result from the expression of muta...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.16.7.3825

    authors: Siomi MC,Zhang Y,Siomi H,Dreyfuss G

    更新日期:1996-07-01 00:00:00

  • Phosphorylation of SAF-A/hnRNP-U Serine 59 by Polo-Like Kinase 1 Is Required for Mitosis.

    abstract::Scaffold attachment factor A (SAF-A), also called heterogenous nuclear ribonuclear protein U (hnRNP-U), is phosphorylated on serine 59 by the DNA-dependent protein kinase (DNA-PK) in response to DNA damage. Since SAF-A, DNA-PK catalytic subunit (DNA-PKcs), and protein phosphatase 6 (PP6), which interacts with DNA-PKcs...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/MCB.01312-14

    authors: Douglas P,Ye R,Morrice N,Britton S,Trinkle-Mulcahy L,Lees-Miller SP

    更新日期:2015-08-01 00:00:00

  • The HML mating-type cassette of Saccharomyces cerevisiae is regulated by two separate but functionally equivalent silencers.

    abstract::Mating-type genes resident in the silent cassette HML at the left arm of chromosome III are repressed by the action of four SIR gene products, most likely mediated through two cis-acting sites located on opposite sides of the locus. We showed that deletion of either of these two cis-acting sites from the chromosome di...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.9.11.4621

    authors: Mahoney DJ,Broach JR

    更新日期:1989-11-01 00:00:00

  • O glycosylation of an Sp1-derived peptide blocks known Sp1 protein interactions.

    abstract::The O-linked N-acetylglucosamine (O-GlcNAc) modification of proteins is dynamic and abundant in the nucleus and cytosol. Several transcription factors, including Sp1, have been shown to contain this modification; however, the functional role of O-GlcNAc in these proteins has not been determined. In this paper we descr...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.17.11.6472

    authors: Roos MD,Su K,Baker JR,Kudlow JE

    更新日期:1997-11-01 00:00:00

  • The low-abundance U11 and U12 small nuclear ribonucleoproteins (snRNPs) interact to form a two-snRNP complex.

    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

    pub_type: 杂志文章

    doi:10.1128/mcb.12.3.1276

    authors: Wassarman KM,Steitz JA

    更新日期:1992-03-01 00:00:00

  • Eucaryotic RNA polymerase conditional mutant that rapidly ceases mRNA synthesis.

    abstract::We have isolated a yeast conditional mutant which rapidly ceases synthesis of mRNA when subjected to the nonpermissive temperature. This mutant (rpb1-1) was constructed by replacing the wild-type chromosomal copy of the gene encoding the largest subunit of RNA polymerase II with one mutagenized in vitro. The rapid ces...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.7.5.1602

    authors: Nonet M,Scafe C,Sexton J,Young R

    更新日期:1987-05-01 00:00:00

  • Extrachromosomal replication of shuttle vectors in Dictyostelium discoideum.

    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

    pub_type: 杂志文章

    doi:10.1128/mcb.5.11.3241

    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

  • Developmental regulation of specific protein interactions with an enhancerlike binding site far upstream from the avian very-low-density apolipoprotein II gene.

    abstract::Expression of the avian very-low-density apolipoprotein II (apoVLDLII) gene is completely dependent on estrogen and restricted to the liver. We have identified binding sites for nonhistone nuclear proteins located between -1.96 and -2.61 kilobases. One of these sites, located at -2.6 kilobases (designated site 1), was...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.10.1.154

    authors: Hoodless PA,Roy RN,Ryan AK,Haché RJ,Vasa MZ,Deeley RG

    更新日期:1990-01-01 00:00:00

  • Cell cycle-dependent phosphorylation of C/EBPbeta mediates oncogenic cooperativity between C/EBPbeta and H-RasV12.

    abstract::CCAAT/enhancer binding protein beta (C/EBPbeta) is a widely expressed transcription factor whose activity is regulated by oncogenic Ha-RasV12 signaling. C/EBPbeta is essential for the development of mouse skin tumors containing Ras mutations and can cooperate with RasV12 to transform NIH 3T3 cells. Here we have invest...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/MCB.24.17.7380-7391.2004

    authors: Shuman JD,Sebastian T,Kaldis P,Copeland TD,Zhu S,Smart RC,Johnson PF

    更新日期:2004-09-01 00:00:00

  • Structural and functional conservation of the NuA4 histone acetyltransferase complex from yeast to humans.

    abstract::The NuA4 histone acetyltransferase (HAT) multisubunit complex is responsible for acetylation of histone H4 and H2A N-terminal tails in yeast. Its catalytic component, Esa1, is essential for cell cycle progression, gene-specific regulation and has been implicated in DNA repair. Almost all NuA4 subunits have clear homol...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.24.5.1884-1896.2004

    authors: Doyon Y,Selleck W,Lane WS,Tan S,Côté J

    更新日期:2004-03-01 00:00:00

  • Transcription of the gene for a pepsinogen, PEP1, is regulated by white-opaque switching in Candida albicans.

    abstract::Cells of Candida albicans WO-1 spontaneously switch between a white and opaque CFU, and this phase transition involves a dramatic change in cellular phenotype. By using a differential hybridization screen, an opaque-specific cDNA, Op1a, which represents the transcript of a gene regulated by switching, has been isolate...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.12.7.2997

    authors: Morrow B,Srikantha T,Soll DR

    更新日期:1992-07-01 00:00:00

  • Evolutionarily conserved function of RRP36 in early cleavages of the pre-rRNA and production of the 40S ribosomal subunit.

    abstract::Ribosome biogenesis in eukaryotes is a major cellular activity mobilizing the products of over 200 transcriptionally coregulated genes referred to as the rRNA and ribosome biosynthesis regulon. We investigated the function of an essential, uncharacterized gene of this regulon, renamed RRP36. We show that the Rrp36p pr...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/MCB.00999-09

    authors: Gérus M,Bonnart C,Caizergues-Ferrer M,Henry Y,Henras AK

    更新日期:2010-03-01 00:00:00

  • Amount of RNA secondary structure required to induce an alternative splice.

    abstract::We set up an alternative splicing system in vitro in which the relative amounts of two spliced RNAs, one containing and the other lacking a particular exon, were directly proportional to the length of an inverted repeat inserted into the flanking introns. We then used the system to measure the effect of intramolecular...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.7.9.3194

    authors: Solnick D,Lee SI

    更新日期:1987-09-01 00:00:00

  • A novel role of vimentin filaments: binding and stabilization of collagen mRNAs.

    abstract::The stem-loop in the 5' untranslated region (UTR) of collagen α1(I) and α2(I) mRNAs (5'SL) is the key element regulating their stability and translation. Stabilization of collagen mRNAs is the predominant mechanism for high collagen expression in fibrosis. LARP6 binds the 5'SL of α1(I) and α2(I) mRNAs with high affini...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/MCB.05263-11

    authors: Challa AA,Stefanovic B

    更新日期:2011-09-01 00:00:00

  • Spt5 cooperates with human immunodeficiency virus type 1 Tat by preventing premature RNA release at terminator sequences.

    abstract::The human immunodeficiency virus type 1 (HIV-1) Tat protein activates transcription elongation by stimulating the Tat-activated kinase (TAK/p-TEFb), a protein kinase composed of CDK9 and its cyclin partner, cyclin T1. CDK9 is able to hyperphosphorylate the carboxyl-terminal domain (CTD) of the large subunit of RNA pol...

    journal_title:Molecular and cellular biology

    pub_type: 杂志文章

    doi:10.1128/mcb.22.4.1079-1093.2002

    authors: Bourgeois CF,Kim YK,Churcher MJ,West MJ,Karn J

    更新日期:2002-02-01 00:00:00