H1N1: a Mexican perspective.

abstract：:The pluripotent state of embryonic stem cells (ESCs) provides a unique perspective on regulatory programs that govern self-renewal and differentiation and somatic cell reprogramming. Here, we review the highly connected protein and transcriptional networks that maintain pluripotency and how they are intertwined with f...

journal_title：Cell

authors： Orkin SH,Hochedlinger K

更新日期：2011-06-10 00:00:00

abstract：:We have identified a nuclear pathway that rapidly degrades unspliced pre-mRNAs in yeast. This involves 3'-->5' degradation by the exosome complex and 5'-->3' degradation by the exonuclease Rat1p. 3'-->5' degradation is normally the major pathway and is regulated in response to carbon source. Inhibition of pre-mRNA deg...

journal_title：Cell

authors： Bousquet-Antonelli C,Presutti C,Tollervey D

更新日期：2000-09-15 00:00:00

abstract：:To initiate a genetic study of the hormonal regulation of genes coding for the three vitellogenins or yolk polypeptide precursors (YPs) in Drosophila, we have isolated from wild flies genetic variants which alter the mobility in SDS-PAGE of each YP independently. These variants are expressed codominantly and they are ...

journal_title：Cell

authors： Postlethwait JH,Jowett T

更新日期：1980-07-01 00:00:00

abstract：:The precise control of miR-17∼92 microRNA (miRNA) is essential for normal development, and overexpression of certain miRNAs from this cluster is oncogenic. Here, we find that the relative expression of the six miRNAs processed from the primary (pri-miR-17∼92) transcript is dynamically regulated during embryonic stem c...

journal_title：Cell

authors： Du P,Wang L,Sliz P,Gregory RI

更新日期：2015-08-13 00:00:00

abstract：:The linear extrachromosomal ribosomal DNA of Tetrahymena is generated from a single integrated copy during macronuclear development. The free ends of this extrachromosomal gene contain 20-70 tandem repeats of the hexanucleotide CCCCAA. We have determined the nucleotide sequence at the same (3') end of the single, inte...

journal_title：Cell

authors： King BO,Yao MC

更新日期：1982-11-01 00:00:00

abstract：:Fractionation of a microsomal detergent extract with ammonium sulfate allows separation of the signal recognition particle receptor (SR alpha), which is required for targeting of the nascent chain, from other microsomal proteins, such as signal peptidase, whose activity is displayed during subsequent translocation. Th...

journal_title：Cell

authors： Nicchitta CV,Migliaccio G,Blobel G

更新日期：1991-05-17 00:00:00

abstract：:This year, the Albert Lasker Basic Medical Research Award will be shared by Michael Sheetz, James Spudich, and Ronald Vale for discoveries concerning the biophysical actions of cytoskeletal motor-protein machines that move cargo within cells, contract muscles, and enable cell motility. ...

journal_title：Cell

authors： Ringe D,Petsko GA

更新日期：2012-09-14 00:00:00

abstract：:The brain produces two brain-derived neurotrophic factor (BDNF) transcripts, with either short or long 3' untranslated regions (3' UTRs). The physiological significance of the two forms of mRNAs encoding the same protein is unknown. Here, we show that the short and long 3' UTR BDNF mRNAs are involved in different cell...

journal_title：Cell

authors： An JJ,Gharami K,Liao GY,Woo NH,Lau AG,Vanevski F,Torre ER,Jones KR,Feng Y,Lu B,Xu B

更新日期：2008-07-11 00:00:00

abstract：:The crystal structure of the snake toxin fasciculin, bound to mouse acetylcholinesterase (mAChE), at 3.2 A resolution reveals a synergistic three-point anchorage consistent with the picomolar dissociation constant of the complex. Loop II of fasciculin contains a cluster of hydrophobic residues that interact with the p...

journal_title：Cell

authors： Bourne Y,Taylor P,Marchot P

更新日期：1995-11-03 00:00:00

abstract：:Nucleotide sequences in two wild-type and six mutant operators in the DNA of phage lambda are compared. Strikingly similar 17 base pair units are found which we identify as the repressor binding sites. Each operator contains multiple repressor binding sites separated by A-T rich spacers. Elements of 2 fold rotational ...

journal_title：Cell

authors： Maniatis T,Ptashne M,Backman K,Kield D,Flashman S,Jeffrey A,Maurer R

更新日期：1975-06-01 00:00:00

abstract：:The HIV auxiliary protein Vpr potently blocks the cell cycle at the G2/M transition. Here, we show that G2/M arrest results from untimely activation of the structure-specific endonuclease (SSE) regulator SLX4 complex (SLX4com) by Vpr, a process that requires VPRBP-DDB1-CUL4 E3-ligase complex. Direct interaction of Vpr...

journal_title：Cell

authors： Laguette N,Brégnard C,Hue P,Basbous J,Yatim A,Larroque M,Kirchhoff F,Constantinou A,Sobhian B,Benkirane M

更新日期：2014-01-16 00:00:00

abstract：:We have determined the 2.0 A crystal structure of a fragment of human fibronectin encompassing the seventh through the RGD-containing tenth type III repeats (FN7-10). The structure reveals an extended rod-like molecule with a long axis of approximately 140 A and highly variable relationships between adjacent domains. ...

journal_title：Cell

authors： Leahy DJ,Aukhil I,Erickson HP

更新日期：1996-01-12 00:00:00

abstract：:The structure and organization on the Escherichia coli chromosome of the gene cluster coding for two methionine tRNAs (tRNAmMet), four glutamine tRNAs (two tRNA1Gln and two tRNA2Gln), and a previously unidentified tRNA (called tRNAx) have been studied by restriction enzyme analysis and DNA sequencing, utilizing a spec...

journal_title：Cell

authors： Nakajima N,Ozeki H,Shimura Y

更新日期：1981-01-01 00:00:00

abstract：:The endoplasmic reticulum (ER) often forms stacked membrane sheets, an arrangement that is likely required to accommodate a maximum of membrane-bound polysomes for secretory protein synthesis. How sheets are stacked is unknown. Here, we used improved staining and automated ultrathin sectioning electron microscopy meth...

journal_title：Cell

authors： Terasaki M,Shemesh T,Kasthuri N,Klemm RW,Schalek R,Hayworth KJ,Hand AR,Yankova M,Huber G,Lichtman JW,Rapoport TA,Kozlov MM

更新日期：2013-07-18 00:00:00

abstract：:Periodic transcription of yeast histone genes has been demonstrated by DNA excess filter hybridization of in vivo pulse-labeled RNA isolated from synchronous cell cultures. Using strains carrying cell division cycle (cdc) mutations, we show that both activation and termination of transcription are determined by tempor...

journal_title：Cell

authors： Hereford L,Bromley S,Osley MA

更新日期：1982-08-01 00:00:00

abstract：:Csm, a type III-A CRISPR-Cas interference complex, is a CRISPR RNA (crRNA)-guided RNase that also possesses target RNA-dependent DNase and cyclic oligoadenylate (cOA) synthetase activities. However, the structural features allowing target RNA-binding-dependent activation of DNA cleavage and cOA generation remain unkno...

journal_title：Cell

authors： You L,Ma J,Wang J,Artamonova D,Wang M,Liu L,Xiang H,Severinov K,Zhang X,Wang Y

更新日期：2019-01-10 00:00:00

abstract：:The mechanism by which nucleosome cores are displaced and re-formed during transcription in vitro has been investigated. A nucleosome core was assembled on a short linear DNA template (227 bp) containing an SP6 RNA polymerase promoter and a nucleosome-positioning sequence. Transcription induced the translocation of th...

journal_title：Cell

authors： Studitsky VM,Clark DJ,Felsenfeld G

更新日期：1994-01-28 00:00:00

abstract：:Tumor suppressors block the development of cancer and are often lost during tumor development. Papa et al. show that partial loss of normal PTEN tumor suppressor function can be compounded by additional disruption caused by the expression of inactive mutant PTEN protein. This has significant implications for patients ...

journal_title：Cell

authors： Leslie NR,den Hertog J

更新日期：2014-04-24 00:00:00

abstract：:The trk tyrosine kinase proto-oncogene product gp140prototrk binds nerve growth factor (NGF) and is rapidly and selectively activated by this neurotrophic factor. To determine whether gp140prototrk is involved in transducing a functional NGF signal, PC12 cell mutants (PC12nnr) deficient in high affinity NGF binding an...

journal_title：Cell

authors： Loeb DM,Maragos J,Martin-Zanca D,Chao MV,Parada LF,Greene LA

更新日期：1991-09-06 00:00:00

abstract：:Most inducible transcriptional programs consist of primary and secondary response genes (PRGs and SRGs) that differ in their kinetics of expression and in their requirements for new protein synthesis and chromatin remodeling. Here we show that many PRGs, in contrast to SRGs, have preassembled RNA polymerase II (Pol II...

journal_title：Cell

authors： Hargreaves DC,Horng T,Medzhitov R

更新日期：2009-07-10 00:00:00

abstract：:We studied H1 gene expression in hybrids of Xenopus laevis (female) x Xenopus borealis (male) and saw paternal H1 synthesis in mid-blastulae, which indicates that the H1 genes are active by this stage. The behavior of the maternal store of H1 histone mRNA was studied in androgenetic haploids. In which all stored mRNA ...

journal_title：Cell

authors： Woodland HR,Flynn JM,Wyllie AJ

更新日期：1979-09-01 00:00:00

abstract：:The ubiquitin-specific processing protease (UBP) family of deubiquitinating enzymes plays an essential role in numerous cellular processes. HAUSP, a representative UBP, specifically deubiquitinates and hence stabilizes the tumor suppressor protein p53. Here, we report the crystal structures of the 40 kDa catalytic cor...

journal_title：Cell

authors： Hu M,Li P,Li M,Li W,Yao T,Wu JW,Gu W,Cohen RE,Shi Y

更新日期：2002-12-27 00:00:00

abstract：:AMPA-type glutamate receptors (AMPA-Rs) mediate a majority of excitatory synaptic transmission in the brain. In hippocampus, most AMPA-Rs are hetero-oligomers composed of GluR1/GluR2 or GluR2/GluR3 subunits. Here we show that these AMPA-R forms display different synaptic delivery mechanisms. GluR1/GluR2 receptors are ...

journal_title：Cell

authors： Shi S,Hayashi Y,Esteban JA,Malinow R

更新日期：2001-05-04 00:00:00

abstract：:The Mixed-Lineage Leukemia (MLL) protein is a histone methyltransferase that is mutated in clinically and biologically distinctive subsets of acute leukemia. MLL normally associates with a cohort of highly conserved cofactors to form a macromolecular complex that includes menin, a product of the MEN1 tumor suppressor ...

journal_title：Cell

authors： Yokoyama A,Somervaille TC,Smith KS,Rozenblatt-Rosen O,Meyerson M,Cleary ML

更新日期：2005-10-21 00:00:00

abstract：:Suppressor of Hairless (Su(H)) is required at two stages of adult sensory organ development in Drosophila. Complete loss of Su(H) function results in a "neurogenic" phenotype in imaginal discs, in which too many cells adopt the sensory organ precursor cell fate. Su(H) is also involved in controlling the fates of sensi...

journal_title：Cell

authors： Schweisguth F,Posakony JW

更新日期：1992-06-26 00:00:00

abstract：:Immunologically privileged sites express Fas ligand (FasL), which protects them from attack by activated T cells that express Fas and die upon contact with FasL. In an attempt to protect nonobese diabetic mice (NOD) from autoimmune diabetes, we made FasL transgenic NOD mice using the beta cell-specific rat insulin-1 p...

journal_title：Cell

authors： Chervonsky AV,Wang Y,Wong FS,Visintin I,Flavell RA,Janeway CA Jr,Matis LA

更新日期：1997-04-04 00:00:00

abstract：:The redox-regulated chaperone Hsp33 protects organisms against oxidative stress that leads to protein unfolding. Activation of Hsp33 is triggered by the oxidative unfolding of its own redox-sensor domain, making Hsp33 a member of a recently discovered class of chaperones that require partial unfolding for full chapero...

journal_title：Cell

authors： Reichmann D,Xu Y,Cremers CM,Ilbert M,Mittelman R,Fitzgerald MC,Jakob U

更新日期：2012-03-02 00:00:00

abstract：:Bacteria have evolved many different means of generating movement. In this issue of Cell, Shaevitz et al. (2005) describe the swimming movement of a helical bacterium called Spiroplasma. They discover that Spiroplasma propels itself by generating two temporally distinct kinks that travel the length of the bacterium. T...

journal_title：Cell

authors： Wolgemuth CW,Charon NW

更新日期：2005-09-23 00:00:00

abstract：:Reactive oxygen species (ROS) and mitochondrial defects in neurons are implicated in neurodegenerative disease. Here, we find that a key consequence of ROS and neuronal mitochondrial dysfunction is the accumulation of lipid droplets (LD) in glia. In Drosophila, ROS triggers c-Jun-N-terminal Kinase (JNK) and Sterol Reg...

journal_title：Cell

authors： Liu L,Zhang K,Sandoval H,Yamamoto S,Jaiswal M,Sanz E,Li Z,Hui J,Graham BH,Quintana A,Bellen HJ

更新日期：2015-01-15 00:00:00

abstract：:Breast cancer (BC) comprises multiple distinct subtypes that differ genetically, pathologically, and clinically. Here, we describe a robust protocol for long-term culturing of human mammary epithelial organoids. Using this protocol, >100 primary and metastatic BC organoid lines were generated, broadly recapitulating t...

journal_title：Cell

authors： Sachs N,de Ligt J,Kopper O,Gogola E,Bounova G,Weeber F,Balgobind AV,Wind K,Gracanin A,Begthel H,Korving J,van Boxtel R,Duarte AA,Lelieveld D,van Hoeck A,Ernst RF,Blokzijl F,Nijman IJ,Hoogstraat M,van de Ven M,Egan

更新日期：2018-01-11 00:00:00