A mechanism of formation of a persistent hybrid between elongating RNA and template DNA.

abstract：:We report the discovery of a short-lived chaperone that is required for the correct maturation of the eukaryotic 20S proteasome and is destroyed at a specific stage of the assembly process. The S. cerevisiae Ump1p protein is a component of proteasome precursor complexes containing unprocessed beta subunits but is not ...

journal_title：Cell

authors： Ramos PC,Höckendorff J,Johnson ES,Varshavsky A,Dohmen RJ

更新日期：1998-02-20 00:00:00

abstract：:Signal recognition particle (SRP), a small ribonucleoprotein required for targeting secretory proteins to the ER, has three known functions: signal recognition, elongation arrest, and translocation promotion. Because SRP is inactivated by the sulfhydryl alkylating reagent N-ethylmaleimide (NEM), we have attempted to e...

journal_title：Cell

authors： Siegel V,Walter P

更新日期：1988-01-15 00:00:00

abstract：:SecA, the peripheral subunit of E. coli preprotein translocase, alternates between a membrane inserted and a deinserted state as part of the catalytic cycle of preprotein translocation. When SecA is complexed with SecY/E and preprotein, ATP drives a profound conformational change, leading to membrane insertion of a 30...

journal_title：Cell

authors： Economou A,Wickner W

更新日期：1994-09-09 00:00:00

abstract：:We have isolated a population of vesicular carriers involved in the transport (transcytosis) of proteins from the basolateral to the apical plasma membrane of hepatocytes. The obtained fraction was enriched in compartments containing known transcytosed proteins and depleted in elements of the secretory pathway, Golgi ...

journal_title：Cell

authors： Sztul E,Kaplin A,Saucan L,Palade G

更新日期：1991-01-11 00:00:00

abstract：:The gut epithelium self-renews every several days, providing an important innate defense system that limits bacterial colonization. Nevertheless, many bacterial pathogens, including Shigella, efficiently colonize the intestinal epithelium. Here, we show that the Shigella effector IpaB, when delivered into epithelial c...

journal_title：Cell

authors： Iwai H,Kim M,Yoshikawa Y,Ashida H,Ogawa M,Fujita Y,Muller D,Kirikae T,Jackson PK,Kotani S,Sasakawa C

更新日期：2007-08-24 00:00:00

abstract：:The majority of the mRNA molecules in HeLa cells contain 1-2 residue(s) of m6Ap and one blocked, methylated 5' terminal "cap" structure. The hnRNA, which is longer than mRNA, contains both m6Ap and caps but 4-6 times as many m6Ap residues per chain. In addition, nuclear molecules contain T2 RNA ase-resistant, methyl-l...

journal_title：Cell

authors： Salditt-Georgieff M,Jelinek W,Darnell JE,Furuichi Y,Morgan M,Shatkin A

更新日期：1976-02-01 00:00:00

abstract：:Screens for agents that specifically kill epithelial cancer stem cells (CSCs) have not been possible due to the rarity of these cells within tumor cell populations and their relative instability in culture. We describe here an approach to screening for agents with epithelial CSC-specific toxicity. We implemented this ...

journal_title：Cell

authors： Gupta PB,Onder TT,Jiang G,Tao K,Kuperwasser C,Weinberg RA,Lander ES

更新日期：2009-08-21 00:00:00

abstract：:Endogenous and infectious mouse mammary tumor viruses (MMTVs) encode in their 3' long terminal repeat a protein that exerts superantigen activity; that is, it is able to interact with T cells via the variable domain of the T cell receptor (TCR) beta chain. We show here that transmission of an infectious MMTV is preven...

journal_title：Cell

authors： Held W,Waanders GA,Shakhov AN,Scarpellino L,Acha-Orbea H,MacDonald HR

更新日期：1993-08-13 00:00:00

abstract：:M-MuLV-specific DNA probes were used to establish the state of integration and amplification of recombinant proviral sequences in Moloney virus-induced tumors of Balb/Mo, Balb/c and 129 mice. The somatically acquired viral sequences contain both authentic M-MuLV genomes and recombinants of M-MuLV with endogenous viral...

journal_title：Cell

authors： van der Putten H,Quint W,van Raaij J,Maandag ER,Verma IM,Berns A

更新日期：1981-06-01 00:00:00

abstract：:Release of CHO-K1 cells from plateau or stationary phase and reentry into the cell cycle is specifically and reversibly blocked at two distinct sites by the anticalmodulin drug W13. The first block occurs early during release while the cells are still at G0/G1, whereas the second occurs later in reentry during early S...

journal_title：Cell

authors： Chafouleas JG,Lagacé L,Bolton WE,Boyd AE 3rd,Means AR

更新日期：1984-01-01 00:00:00

abstract：:ROAM mutations cause overproduction in S. cerevisiae. Overproduction of ROAM mutant gene products is less in MATa/MAT alpha diploid strains which cannot conjugate than in haplolid strains which can. Overproduction occurs in diploid strains capable of mating whether or not they are capable of sporulating. Overproductio...

journal_title：Cell

authors： Errede B,Cardillo TS,Sherman F,Dubois E,Deschamps J,Wiame JM

更新日期：1980-11-01 00:00:00

abstract：:In induced erythroleukemia cells, transcription of the beta-globin gene terminates in a region 600-1500 nucleotides downstream of the poly(A) site. To determine whether this region of the mouse DNA functions to terminate transcription when moved to another genomic site, portions of the putative termination region have...

journal_title：Cell

authors： Falck-Pedersen E,Logan J,Shenk T,Darnell JE Jr

更新日期：1985-04-01 00:00:00

abstract：:Nuclear and cytoplasmic poly(A)-binding proteins have been purified from Saccharomyces cerevisiae, and antisera have been used to isolate a gene that encodes them. The gene occurs in a single copy on chromosome 5 and gives rise to a unique, unspliced 2.1 kb transcript. The nuclear protein appears to be derived from th...

journal_title：Cell

authors： Sachs AB,Bond MW,Kornberg RD

更新日期：1986-06-20 00:00:00

abstract：:A new rhythm mutation was isolated based on its elimination of per-controlled luciferase cycling. Levels of period or timeless clock gene products in the mutant are flat in daily light-dark cycles or constant darkness (although PER and TIM oscillate normally in temperature cycles). Consistent with the fact that light ...

journal_title：Cell

authors： Stanewsky R,Kaneko M,Emery P,Beretta B,Wager-Smith K,Kay SA,Rosbash M,Hall JC

更新日期：1998-11-25 00:00:00

abstract：:Using insertional mutagenesis, we have isolated a "stalky" mutant in which cells destined to become spores end up as stalk cells. Similar mutants were previously observed after chemical mutagenesis, but the affected gene could not be isolated. Our mutant, like the previous ones, is in stkA. Its defect is cell-autonomo...

journal_title：Cell

authors： Chang WT,Newell PC,Gross JD

更新日期：1996-11-01 00:00:00

abstract：:Phosphoinositide 3-kinases (PI3-Ks) are an important emerging class of drug targets, but the unique roles of PI3-K isoforms remain poorly defined. We describe here an approach to pharmacologically interrogate the PI3-K family. A chemically diverse panel of PI3-K inhibitors was synthesized, and their target selectivity...

journal_title：Cell

authors： Knight ZA,Gonzalez B,Feldman ME,Zunder ER,Goldenberg DD,Williams O,Loewith R,Stokoe D,Balla A,Toth B,Balla T,Weiss WA,Williams RL,Shokat KM

更新日期：2006-05-19 00:00:00

abstract：:We have shown that in fixed mitotic chromosomes from female G. gerbillus cells the inactive X chromosome is distinctly less sensitive to DNAase I than the active X chromosome, as demonstrated by in situ nick translation. These results indicated that the specific chromatin conformation that renders potentially active g...

journal_title：Cell

authors： Kerem BS,Goitein R,Diamond G,Cedar H,Marcus M

更新日期：1984-09-01 00:00:00

abstract：:Sharply delineated domains of cell types arise in developing tissues under instruction of inductive signal (morphogen) gradients, which specify distinct cell fates at different signal levels. The translation of a morphogen gradient into discrete spatial domains relies on precise signal responses at stable cell positio...

journal_title：Cell

authors： Xiong F,Tentner AR,Huang P,Gelas A,Mosaliganti KR,Souhait L,Rannou N,Swinburne IA,Obholzer ND,Cowgill PD,Schier AF,Megason SG

更新日期：2013-04-25 00:00:00

abstract：:Excessive sun tanning can result in addictive behavior. In this issue of Cell, Fell et al. utilize a combination of behavioral pharmacology and transgenic mice to demonstrate that chronic UV light exposure recruits p53 signaling in keratinocytes, subsequently increasing β-endorphin signaling at opioid receptors, and p...

journal_title：Cell

authors： Tejeda HA,Bonci A

更新日期：2014-06-19 00:00:00

abstract：:The p53 tumor suppressor gene is commonly altered in human tumors, predominantly through missense mutations that result in accumulation of mutant p53 protein. These mutations may confer dominant-negative or gain-of-function properties to p53. To ascertain the physiological effects of p53 point mutation, the structural...

journal_title：Cell

authors： Olive KP,Tuveson DA,Ruhe ZC,Yin B,Willis NA,Bronson RT,Crowley D,Jacks T

更新日期：2004-12-17 00:00:00

abstract：:We previously demonstrated that pseudogenes complementary to the small nuclear RNAs U1, U2 and U3 are dispersed and abundant in the human genome. Here we report that three pseudogenes (U1.101, U2.13 and U3.5) are flanked by perfect short direct repeats of 16 to 19 base pairs. In all three pseudogenes. the upstream dir...

journal_title：Cell

authors： Van Arsdell SW,Denison RA,Bernstein LB,Weiner AM,Manser T,Gesteland RF

更新日期：1981-10-01 00:00:00

abstract：:The v-erbB gene product of avian erythroblastosis virus (AEV) has extensive homology with the receptor for epidermal growth factor (EGF). We report here that chicken embryo fibroblasts (CEF) transformed by AEV show enhanced tyrosine phosphorylation of a number of cellular polypeptides, including the 36 kd protein, whi...

journal_title：Cell

authors： Gilmore T,DeClue JE,Martin GS

更新日期：1985-03-01 00:00:00

abstract：:Treating B16 mouse melanoma cells with monoclonal antibody NORM-2 reduces cell growth in tissue culture, agar, and syngeneic mice. We show that the NORM-2 antibody recognizes an integral 83 kd glycoprotein that is mobile in the plane of the plasma membrane of B16 melanoma cells. Expression of the glycoprotein is reduc...

journal_title：Cell

authors： Wieland I,Müller G,Braun S,Birchmeier W

更新日期：1986-12-05 00:00:00

abstract：:The functional consequences of glycan structural changes associated with cellular differentiation are ill defined. Herein, we investigate the role of glycan adducts to the O-glycosylated polypeptide stalk tethering the CD8alphabeta coreceptor to the thymocyte surface. We show that immature CD4(+)CD8(+) double-positive...

journal_title：Cell

authors： Moody AM,Chui D,Reche PA,Priatel JJ,Marth JD,Reinherz EL

更新日期：2001-11-16 00:00:00

abstract：:The triskelion shape of the clathrin molecule enables it to form the polyhedral protein network that covers clathrin-coated pits and vesicles. Domains within the clathrin heavy chain that are responsible for maintaining triskelion shape and function were identified and localized. Sequences that mediate trimerization a...

journal_title：Cell

authors： Näthke IS,Heuser J,Lupas A,Stock J,Turck CW,Brodsky FM

更新日期：1992-03-06 00:00:00

abstract：:Phagosomes were traditionally thought to originate from an invagination and scission of the plasma membrane to form a distinct intracellular vacuole. An alternative model implicating the endoplasmic reticulum (ER) as a major component of nascent and maturing phagosomes was recently proposed (Gagnon et al., 2002). To r...

journal_title：Cell

authors： Touret N,Paroutis P,Terebiznik M,Harrison RE,Trombetta S,Pypaert M,Chow A,Jiang A,Shaw J,Yip C,Moore HP,van der Wel N,Houben D,Peters PJ,de Chastellier C,Mellman I,Grinstein S

更新日期：2005-10-07 00:00:00

abstract：:All recombination models postulate one or more recombination intermediates that are joint molecules containing two homologous parental molecules. A spike of branched DNA molecules not seen in DNA from mitotic cells was found in the two-dimensional gel analysis of meiotic DNA from S. cerevisiae. The mass of molecules i...

journal_title：Cell

authors： Collins I,Newlon CS

更新日期：1994-01-14 00:00:00

abstract：:KRASG12C was recently identified to be potentially druggable by allele-specific covalent targeting of Cys-12 in vicinity to an inducible allosteric switch II pocket (S-IIP). Success of this approach requires active cycling of KRASG12C between its active-GTP and inactive-GDP conformations as accessibility of the S-IIP ...

journal_title：Cell

authors： Janes MR,Zhang J,Li LS,Hansen R,Peters U,Guo X,Chen Y,Babbar A,Firdaus SJ,Darjania L,Feng J,Chen JH,Li S,Li S,Long YO,Thach C,Liu Y,Zarieh A,Ely T,Kucharski JM,Kessler LV,Wu T,Yu K,Wang Y,Yao Y,Deng X,

更新日期：2018-01-25 00:00:00

abstract：:Cancer cells have distinctive nutrient demands to fuel growth and proliferation, including the disproportionate use of glucose, glutamine, and fatty acids. Comerford et al. and Mashimo et al. now demonstrate that several types of cancer are avid consumers of acetate, which facilitates macromolecular biosynthesis and h...

journal_title：Cell

authors： Lyssiotis CA,Cantley LC

更新日期：2014-12-18 00:00:00

abstract：:I have defined conditions under which RepFIC plasmid DNA can be maintained in a state of lowered helical density. In exponentially growing cultures, the DNA of lowered helical density is present in small amounts but never totally absent, suggesting that it is a normal variant of plasmid maintenance. It is fully methyl...

journal_title：Cell

authors： Maas R

更新日期：2001-06-29 00:00:00