abstract：:We report in vivo analysis of histone and RNA polymerase II (pol II) occupancy at the 601 element, which functions as a strong in vitro nucleosome-positioning element and transcriptional pause site. Surprisingly, nucleosomes were not strongly positioned over the 601 element inserted either within a yeast chromosomal o...

journal_title：Molecular and cellular biology

authors： Perales R,Zhang L,Bentley D

更新日期：2011-08-01 00:00:00

abstract：:The Wnt/β-catenin signaling pathway plays crucial roles in early hindbrain formation, and its constitutive activity is associated with a subset of human medulloblastoma, a malignant childhood tumor of the posterior fossa. However, the precise function of Wnt/β-catenin signaling during cerebellar development is still e...

journal_title：Molecular and cellular biology

authors： Lorenz A,Deutschmann M,Ahlfeld J,Prix C,Koch A,Smits R,Fodde R,Kretzschmar HA,Schüller U

更新日期：2011-08-01 00:00:00

abstract：:T cell antigen receptor (TCR) activation triggers profound changes in the actin cytoskeleton. In addition to controlling cellular shape and polarity, this process regulates vital T cell responses, such as T cell adhesion, motility, and proliferation. These depend on the recruitment of the signaling proteins Nck and Wi...

journal_title：Molecular and cellular biology

authors： Pauker MH,Reicher B,Fried S,Perl O,Barda-Saad M

更新日期：2011-07-01 00:00:00

abstract：:Gamma interferon (IFN-γ) is an inflammatory cytokine that has complex effects on myogenesis. Here, we show that the IFN-γ-induced inhibition of myogenesis is mediated by the major histocompatibility complex (MHC) class II transactivator, CIITA, which binds to myogenin and inhibits its activity. In IFN-γ-treated myobla...

journal_title：Molecular and cellular biology

authors： Londhe P,Davie JK

更新日期：2011-07-01 00:00:00

abstract：:The treatment of cells with histone deacetylase inhibitors (HDACi) was reported to reveal the acetylation of STAT1 at lysine 410 and lysine 413 (O. H. Krämer et al., Genes Dev. 20:473-485, 2006). STAT1 acetylation was proposed to regulate apoptosis by facilitating binding to NF-κB and to control immune responses by su...

journal_title：Molecular and cellular biology

authors： Antunes F,Marg A,Vinkemeier U

更新日期：2011-07-01 00:00:00

abstract：:Cell polarity plays a critical role in the development of all metazoans; however, the mechanisms of cell polarity and the specific role of cell polarity pathways in mammalian organisms are still poorly understood. Lethal giant larvae (Lgl) is an apical-basal polarity gene identified in Drosophila, where it functions a...

journal_title：Molecular and cellular biology

authors： Sripathy S,Lee M,Vasioukhin V

更新日期：2011-07-01 00:00:00

abstract：:How early- and late-firing origins are selected on eukaryotic chromosomes is largely unknown. Here, we show that Mrc1, a conserved factor required for stabilization of stalled replication forks, selectively binds to the early-firing origins in a manner independent of Cdc45 and Hsk1 kinase in the fission yeast Schizosa...

journal_title：Molecular and cellular biology

authors： Hayano M,Kanoh Y,Matsumoto S,Masai H

更新日期：2011-06-01 00:00:00

abstract：:Protein ubiquitination plays a key role in the regulation of a variety of DNA repair mechanisms. Protein ubiquitination is controlled by the coordinate activity of ubiquitin ligases and deubiquitinating enzymes (DUBs). The deubiquitinating enzyme USP1 regulates DNA repair and the Fanconi anemia pathway through its ass...

journal_title：Molecular and cellular biology

authors： Murai J,Yang K,Dejsuphong D,Hirota K,Takeda S,D'Andrea AD

更新日期：2011-06-01 00:00:00

abstract：:We document a biphasic effect of Rac2 on the activation and inhibition of PLD2. Cells overexpressing Rac2 and PLD2 simultaneously show a robust initial (<10 min) response toward a chemoattractant that is later (>30 min) greatly diminished over PLD2-only controls. The first phase is due to the presence of a Rac2-PLD2 p...

journal_title：Molecular and cellular biology

authors： Peng HJ,Henkels KM,Mahankali M,Marchal C,Bubulya P,Dinauer MC,Gomez-Cambronero J

更新日期：2011-06-01 00:00:00

abstract：:The conserved RECQ5 DNA helicase is a tumor suppressor in mammalian cells. Defects in RECQ5 lead to the accumulation of spontaneous DNA double-stranded breaks (DSBs) during replication, despite the fact that these cells are proficient in DSB repair by homologous recombination (HR). The reason for this is unknown. Here...

journal_title：Molecular and cellular biology

authors： Li M,Xu X,Liu Y

更新日期：2011-05-01 00:00:00

abstract：:Previously, we identified the E3 ubiquitin ligase Idol (inducible degrader of the low-density lipoprotein [LDL] receptor [LDLR]) as a posttranscriptional regulator of the LDLR pathway. Idol stimulates LDLR degradation through ubiquitination of its C-terminal domain, thereby limiting cholesterol uptake. Here we report ...

journal_title：Molecular and cellular biology

authors： Scotti E,Hong C,Yoshinaga Y,Tu Y,Hu Y,Zelcer N,Boyadjian R,de Jong PJ,Young SG,Fong LG,Tontonoz P

更新日期：2011-05-01 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：:Transcriptome profiling studies have recently uncovered a large number of noncoding RNA transcripts (ncRNAs) in eukaryotic organisms, and there is growing interest in their role in the cell. For example, in haploid Saccharomyces cerevisiae cells, the expression of an overlapping antisense ncRNA, referred to here as RM...

journal_title：Molecular and cellular biology

authors： Gelfand B,Mead J,Bruning A,Apostolopoulos N,Tadigotla V,Nagaraj V,Sengupta AM,Vershon AK

更新日期：2011-04-01 00:00:00

abstract：:Unlike other eukaryotes, the protein-coding genes of Trypanosoma cruzi are arranged in large polycistronic gene clusters transcribed by polymerase II (Pol II). Thus, it is thought that trypanosomes rely solely on posttranscriptional processes to regulate gene expression. Here, we show that the glucosylated thymine DNA...

journal_title：Molecular and cellular biology

authors： Ekanayake DK,Minning T,Weatherly B,Gunasekera K,Nilsson D,Tarleton R,Ochsenreiter T,Sabatini R

更新日期：2011-04-01 00:00:00

abstract：:The chaperone-related AAA ATPase Cdc48 (p97/VCP in higher eukaryotes) segregates ubiquitylated proteins for subsequent degradation by the 26S proteasome or for nonproteolytic fates. The specific outcome of Cdc48 activity is controlled by the evolutionary conserved cofactors Ufd2 and Ufd3, which antagonistically regula...

journal_title：Molecular and cellular biology

authors： Böhm S,Lamberti G,Fernández-Sáiz V,Stapf C,Buchberger A

更新日期：2011-04-01 00:00:00

abstract：:The induction of the granulocytic differentiation of leukemic cells by all-trans retinoic acid (RA) has been a major breakthrough in terms of survival for acute promyelocytic leukemia (APL) patients. Here we highlight the synergism and the underlying novel mechanism between RA and the granulocyte colony-stimulating fa...

journal_title：Molecular and cellular biology

authors： Cassinat B,Zassadowski F,Ferry C,Llopis L,Bruck N,Lainey E,Duong V,Cras A,Despouy G,Chourbagi O,Beinse G,Fenaux P,Rochette Egly C,Chomienne C

更新日期：2011-04-01 00:00:00

abstract：:The structural maintenance of chromosomes (Smc) family members Smc5 and Smc6 are both essential in budding and fission yeasts. Yeast smc5/6 mutants are hypersensitive to DNA damage, and Smc5/6 is recruited to HO-induced double-strand breaks (DSBs), facilitating intersister chromatid recombinational repair. To determin...

journal_title：Molecular and cellular biology

authors： Stephan AK,Kliszczak M,Dodson H,Cooley C,Morrison CG

更新日期：2011-04-01 00:00:00

abstract：:Bright/Arid3a has been characterized both as an activator of immunoglobulin heavy-chain transcription and as a proto-oncogene. Although Bright expression is highly B lineage stage restricted in adult mice, its expression in the earliest identifiable hematopoietic stem cell (HSC) population suggests that Bright might h...

journal_title：Molecular and cellular biology

authors： Webb CF,Bryant J,Popowski M,Allred L,Kim D,Harriss J,Schmidt C,Miner CA,Rose K,Cheng HL,Griffin C,Tucker PW

更新日期：2011-03-01 00:00:00

abstract：:Ras GTPases were long thought to function exclusively from the plasma membrane (PM). However, a current model suggests that Ras proteins can compartmentalize to regulate different functions, and an oncogenic H-Ras mutant that is restricted to the endomembrane can still transform cells. In this study, we demonstrated t...

journal_title：Molecular and cellular biology

authors： Cheng CM,Li H,Gasman S,Huang J,Schiff R,Chang EC

更新日期：2011-03-01 00:00:00

abstract：:TDP-43, or TAR DNA-binding protein 43, is a pathological marker of a spectrum of neurodegenerative disorders, including amyotrophic lateral sclerosis and frontotemporal lobar degeneration with ubiquitin-positive inclusions. TDP-43 is an RNA/DNA-binding protein implicated in transcriptional and posttranscriptional regu...

journal_title：Molecular and cellular biology

authors： Dewey CM,Cenik B,Sephton CF,Dries DR,Mayer P 3rd,Good SK,Johnson BA,Herz J,Yu G

更新日期：2011-03-01 00:00:00

abstract：:Histone H1 is an abundant and essential component of chromatin whose precise role in regulating gene expression is poorly understood. Here, we report that a major target of H1-mediated regulation in embryonic stem (ES) cells is the X-linked Rhox homeobox gene cluster. To address the underlying mechanism, we examined t...

journal_title：Molecular and cellular biology

authors： Maclean JA,Bettegowda A,Kim BJ,Lou CH,Yang SM,Bhardwaj A,Shanker S,Hu Z,Fan Y,Eckardt S,McLaughlin KJ,Skoultchi AI,Wilkinson MF

更新日期：2011-03-01 00:00:00

abstract：:The conserved RNA binding protein La recognizes UUU-3'OH on its small nuclear RNA ligands and stabilizes them against 3'-end-mediated decay. We report that newly described La-related protein 4 (LARP4) is a factor that can bind poly(A) RNA and interact with poly(A) binding protein (PABP). Yeast two-hybrid analysis and ...

journal_title：Molecular and cellular biology

authors： Yang R,Gaidamakov SA,Xie J,Lee J,Martino L,Kozlov G,Crawford AK,Russo AN,Conte MR,Gehring K,Maraia RJ

更新日期：2011-02-01 00:00:00

abstract：:Telomerase promotes telomere maintenance by copying a template within its integral RNA subunit to elongate chromosome ends with new telomeric repeats. Motifs have been defined within the telomerase RNA that contribute to mature RNA accumulation, holoenzyme catalytic activity, or enzyme recruitment to telomeres. Here, ...

journal_title：Molecular and cellular biology

authors： Sexton AN,Collins K

更新日期：2011-02-01 00:00:00

abstract：:Poly(A) signals located at the 3' end of eukaryotic genes drive cleavage and polyadenylation at the same end of pre-mRNA. Although these sequences are expected only at the 3' end of genes, we found that strong poly(A) signals are also predicted within the 5' untranslated regions (UTRs) of many Drosophila melanogaster ...

journal_title：Molecular and cellular biology

authors： Guo J,Garrett M,Micklem G,Brogna S

更新日期：2011-02-01 00:00:00

abstract：:Coordination of skeletal muscle growth and metabolism with nutrient availability is critical for metabolic homeostasis. To establish the role of insulin-like signaling in this process, we used muscle creatine kinase (MCK)-Cre to disrupt expression of insulin receptor substrates Irs1 and Irs2 in mouse skeletal/cardiac ...

journal_title：Molecular and cellular biology

authors： Long YC,Cheng Z,Copps KD,White MF

更新日期：2011-02-01 00:00:00

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

authors： Cave JW,Xia L,Caudy M

更新日期：2011-01-01 00:00:00

abstract：:Appropriate cell cycle checkpoint control is essential for the maintenance of cell and organismal homeostasis. Members of the Nek (NIMA-related kinase) family of serine/threonine protein kinases have been implicated in the regulation of various aspects of the cell cycle. We explored the cellular functions of Nek10, a ...

journal_title：Molecular and cellular biology

authors： Moniz LS,Stambolic V

更新日期：2011-01-01 00:00:00

abstract：:The RNA binding protein CPEB (cytoplasmic polyadenylation element binding) regulates cytoplasmic polyadenylation and translation in germ cells and the brain. In neurons, CPEB is detected at postsynaptic sites, as well as in the cell body. The related CPEB3 protein also regulates translation in neurons, albeit probably...

journal_title：Molecular and cellular biology

authors： Kan MC,Oruganty-Das A,Cooper-Morgan A,Jin G,Swanger SA,Bassell GJ,Florman H,van Leyen K,Richter JD

更新日期：2010-12-01 00:00:00

abstract：:Progesterone receptor (PR) and ErbB-2 bidirectional cross talk participates in breast cancer development. Here, we identified a new mechanism of the PR and ErbB-2 interaction involving the PR induction of ErbB-2 nuclear translocation and the assembly of a transcriptional complex in which ErbB-2 acts as a coactivator o...

journal_title：Molecular and cellular biology

authors： Béguelin W,Díaz Flaqué MC,Proietti CJ,Cayrol F,Rivas MA,Tkach M,Rosemblit C,Tocci JM,Charreau EH,Schillaci R,Elizalde PV

更新日期：2010-12-01 00:00:00

abstract：:The precise expression of the N-myc proto-oncogene is essential for normal mammalian development, whereas altered N-myc gene regulation is known to be a determinant factor in tumor formation. Using transgenic mouse embryos, we show that N-myc sequences from kb -8.7 to kb +7.2 are sufficient to reproduce the N-myc embr...

journal_title：Molecular and cellular biology

authors： Potvin E,Beuret L,Cadrin-Girard JF,Carter M,Roy S,Tremblay M,Charron J

更新日期：2010-11-01 00:00:00

abstract：:Murine embryonic stem (ES) cells are defined by continuous self-renewal and pluripotency. A diverse repertoire of protein isoforms arising from alternative splicing is expressed in ES cells without defined biological roles. Sall4, a transcription factor essential for pluripotency, exists as two isoforms (Sall4a and Sa...

journal_title：Molecular and cellular biology

authors： Rao S,Zhen S,Roumiantsev S,McDonald LT,Yuan GC,Orkin SH

更新日期：2010-11-01 00:00:00

abstract：:Integrin signaling plays critical roles in cell adhesion, spreading, and migration, and it is generally accepted that to regulate these integrin functions accurately, localized actin remodeling is required. However, the molecular mechanisms that control the targeting of actin regulation molecules to the proper sites a...

journal_title：Molecular and cellular biology

authors： Chae YC,Kim KL,Ha SH,Kim J,Suh PG,Ryu SH

更新日期：2010-11-01 00:00:00

abstract：:RNase H1 in mammalian cells is present in nuclei and mitochondria. Its absence in mitochondria results in embryonic lethality due to the failure to amplify mitochondrial DNA (mtDNA). Dual localization to mitochondria and nuclei results from differential translation initiation at two in-frame AUGs (M1 and M27) of a sin...

journal_title：Molecular and cellular biology

authors： Suzuki Y,Holmes JB,Cerritelli SM,Sakhuja K,Minczuk M,Holt IJ,Crouch RJ

更新日期：2010-11-01 00:00:00

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

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

abstract：:The Ras-RAF-mitogen-activated protein kinase (Ras-RAF-MAPK) pathway is overactive in many cancers and in some developmental disorders. In one of those disorders, namely, Noonan syndrome, nine activating C-RAF mutations cluster around Ser(259), a regulatory site for inhibition by 14-3-3 proteins. We show that these mut...

journal_title：Molecular and cellular biology

authors： Molzan M,Schumacher B,Ottmann C,Baljuls A,Polzien L,Weyand M,Thiel P,Rose R,Rose M,Kuhenne P,Kaiser M,Rapp UR,Kuhlmann J,Ottmann C

更新日期：2010-10-01 00:00:00

abstract：:We have recently reported that the yeast chromatin-remodeling factor Swi1 can exist as a prion, [SWI(+)], demonstrating a link between prionogenesis and global transcriptional regulation. To shed light on how the Swi1 conformational switch influences Swi1 function and to define the sequence and structural requirements...

journal_title：Molecular and cellular biology

authors： Du Z,Crow ET,Kang HS,Li L

更新日期：2010-10-01 00:00:00

abstract：:NF-κB activation is a critical component in the transcriptional response to hypoxia. However, the underlying mechanisms that control its activity under these conditions are unknown. Here we report that under hypoxic conditions, IκB kinase (IKK) activity is induced through a calcium/calmodulin-dependent kinase 2 (CaMK2...

journal_title：Molecular and cellular biology

authors： Culver C,Sundqvist A,Mudie S,Melvin A,Xirodimas D,Rocha S

更新日期：2010-10-01 00:00:00

abstract：:The polypyrimidine tract near the 3' splice site is important for pre-mRNA splicing. Using pseudouridine incorporation and in vivo RNA-guided RNA pseudouridylation, we have identified two important uridines in the polypyrimidine tract of adenovirus pre-mRNA. Conversion of either uridine into pseudouridine leads to a s...

journal_title：Molecular and cellular biology

authors： Chen C,Zhao X,Kierzek R,Yu YT

更新日期：2010-09-01 00:00:00

abstract：:Ribosome biogenesis is a highly regulated process ensuring that cell growth (increase in biomass) is coordinated with cell proliferation. The formation of eukaryotic ribosomes is a multistep process initiated by the transcription and processing of rRNA in the nucleolus. Concomitant with this, several preribosomal part...

journal_title：Molecular and cellular biology

authors： Castle CD,Cassimere EK,Lee J,Denicourt C

更新日期：2010-09-01 00:00:00

abstract：:The major histocompatibility complex class II (MHC-II) locus includes a dense cluster of genes that function to initiate immune responses. Expression of insulator CCCTC binding factor (CTCF) was found to be required for expression of all MHC class II genes associated with antigen presentation. Ten CTCF sites that divi...

journal_title：Molecular and cellular biology

authors： Majumder P,Boss JM

更新日期：2010-09-01 00:00:00