abstract：:In Drosophila, flies with two X chromosomes are females, with one X chromosome, males. We investigated the presence of sex determining factors on the X chromosome by constructing genotypes with one X and various X-chromosomal duplications. We found that female determining factors are not evenly distributed along the X...

journal_title：Cell

authors： Steinmann-Zwicky M,Nöthiger R

更新日期：1985-10-01 00:00:00

abstract：:The transforming protein of Rous sarcoma virus (pp60v-src) and its normal cellular homolog (pp60c-src) are demonstrated to be phosphorylated at serine 12 in vivo under certain conditions. We propose that protein kinase C is responsible for this modification based on the following evidence. First, the tumor promoters, ...

journal_title：Cell

authors： Gould KL,Woodgett JR,Cooper JA,Buss JE,Shalloway D,Hunter T

更新日期：1985-10-01 00:00:00

abstract：:Thrombin stimulates 32Pi incorporation into phosphatidylinositol 4-phosphate (PIP), phosphatidylinositol 4,5-bis-phosphate (PIP2), and phosphatidylinositol (PI), and initiates DNA synthesis in hamster (NIL) fibroblasts at a half-maximal concentration of 125 ng/ml. Neomycin, which binds PIP2 and PIP, inhibits both thro...

journal_title：Cell

authors： Carney DH,Scott DL,Gordon EA,LaBelle EF

更新日期：1985-09-01 00:00:00

abstract：:Clarification of the information processing system in bacterial sensing has been obtained by studying mutants that lack the capacity to modify receptors covalently. The remaining part of the system is able to receive signals from the receptor, to respond with partial adaptation, and to exhibit a chemotactic response. ...

journal_title：Cell

authors： Stock J,Kersulis G,Koshland DE Jr

更新日期：1985-09-01 00:00:00

abstract：:The hsp 70 gene of Drosophila contains three domains to which a heat shock gene specific transcription factor (HSTF) binds. In addition to the previously described 55 bp binding domain proximal to the TAT homology, there are two 25 bp binding sites farther upstream. Footprinting studies with 5' and 3' deletion mutatio...

journal_title：Cell

authors： Topol J,Ruden DM,Parker CS

更新日期：1985-09-01 00:00:00

abstract：:We report that the 12,000 dalton domain of fibronectin that interacts with fibroblast cell surfaces also binds specifically to thrombin-inducible, saturable receptors on platelets. Furthermore, we have used chemical cross-linking and monoclonal antibodies to show that the 12,000 dalton domain of fibronectin interacts ...

journal_title：Cell

authors： Gardner JM,Hynes RO

更新日期：1985-09-01 00:00:00

abstract：:Trypanosoma brucei variant surface glycoprotein (VSG) genes are activated either by duplicative (DA) transposition of the gene to a pre-activated expression site or by nonduplicative (NDA) activation of a previously silent telomeric gene. We have obtained a recombinant clone spanning the 5' barren region of the expres...

journal_title：Cell

authors： Cully DF,Ip HS,Cross GA

更新日期：1985-08-01 00:00:00

abstract：:We have determined the complete 9202 nucleotide sequence of the visna lentivirus. The deduced genetic organization most closely resembles that of the AIDS retrovirus in that there is a novel central region separating pol and env. Moreover, there is a close phylogenetic relationship between the conserved reverse transc...

journal_title：Cell

authors： Sonigo P,Alizon M,Staskus K,Klatzmann D,Cole S,Danos O,Retzel E,Tiollais P,Haase A,Wain-Hobson S

更新日期：1985-08-01 00:00:00

abstract：:The surface glycoproteins T4 and T8 define different functional subsets of T lymphocytes and may act as recognition molecules mediating appropriate interactions between the T cell and its target. Previously we employed gene transfer and subtractive hybridization to isolate a T8 cDNA; now we have isolated and sequenced...

journal_title：Cell

authors： Maddon PJ,Littman DR,Godfrey M,Maddon DE,Chess L,Axel R

更新日期：1985-08-01 00:00:00

abstract：:The location of cis-acting regulatory sequences within the long terminal repeat (LTR) of the human T cell lymphotropic virus type III (HTLV-III/LAV) was determined. An enhancer element capable of increasing the rate of transcription from a heterologous promoter, irrespective of distance and orientation, is located bet...

journal_title：Cell

authors： Rosen CA,Sodroski JG,Haseltine WA

更新日期：1985-07-01 00:00:00

abstract：:The subcellular distribution of the type II enzyme of cAMP-dependent protein kinase (cAMP-dPK II) in epithelial and fibroblastic cells was determined by indirect immunofluorescence microscopy. In interphase cells both regulatory (R II) and catalytic (C) subunits were concentrated in a perinuclear area. By comparison o...

journal_title：Cell

authors： Nigg EA,Schäfer G,Hilz H,Eppenberger HM

更新日期：1985-07-01 00:00:00

abstract：:Vanadate has been shown to inhibit phosphatases that remove phosphate groups from phosphotyrosine in cell-free systems. Addition of vanadate to the culture medium of NRK-1 cells resulted in a maximal 40-fold increase in the level of phosphotyrosine in cell protein. Also, vanadate induced transformation as evidenced by...

journal_title：Cell

authors： Klarlund JK

更新日期：1985-07-01 00:00:00

abstract：:Certain mutant alleles at the low density lipoprotein (LDL) receptor locus produce receptors that bind LDL normally, but fail to cluster in coated pits and therefore cannot transport LDL into cells. We prepared genomic DNA libraries from cells of two individuals with this phenotype (internalization-defective familial ...

journal_title：Cell

authors： Lehrman MA,Goldstein JL,Brown MS,Russell DW,Schneider WJ

更新日期：1985-07-01 00:00:00

abstract：:A strong transcription enhancer was identified in the genomic DNA (235 kb) of human cytomegalovirus (HCMV), a ubiquitous and severe pathogen of the herpesvirus group. Cotransfection of enhancerless SV40 DNA with randomly fragmented HCMV DNA yielded two SV40-HCMV recombinant viruses that had incorporated overlapping se...

journal_title：Cell

authors： Boshart M,Weber F,Jahn G,Dorsch-Häsler K,Fleckenstein B,Schaffner W

更新日期：1985-06-01 00:00:00

abstract：:We have localized the regulatory sequence required for viral or poly(I)-poly(C) activation of human beta-interferon gene expression to a region located between -37 and -77 from the mRNA cap site. This sequence has the characteristics of an inducible enhancer element: it can act upstream or downstream of the beta-inter...

journal_title：Cell

authors： Goodbourn S,Zinn K,Maniatis T

更新日期：1985-06-01 00:00:00

abstract：:We have identified a 2.4 kb partial cDNA clone (pDL34) for human von Willebrand factor (vWf) mRNA. pDL34 was selected by screening an endothelial cell cDNA library with a radiolabeled reverse transcript of mRNA obtained by specific immunoisolation of vWf polysomes from endothelial cells. pDL34 selectively hybridized t...

journal_title：Cell

authors： Lynch DC,Zimmerman TS,Collins CJ,Brown M,Morin MJ,Ling EH,Livingston DM

更新日期：1985-05-01 00:00:00

abstract：:We have shown that lariat formation during in vitro splicing of several RNA precursors, from Drosophila to man, occurs at a unique and identifiable but weakly conserved site, 18 to 37 nucleotides proximal to the 3' splice site. Lariat formation within an artificial intron lacking a normal branch-point sequence occurs ...

journal_title：Cell

authors： Reed R,Maniatis T

更新日期：1985-05-01 00:00:00

abstract：:We have characterized an aberrant allele of a variably spliced Drosophila tropomyosin gene. The allele was recovered from the flightless Ifm(3)3 strain, which has been shown to have structurally and functionally abnormal indirect flight muscles. The transcribed portion of the mutant gene is interrupted by an 8,8 kb in...

journal_title：Cell

authors： Karlik CC,Fyrberg EA

更新日期：1985-05-01 00:00:00

abstract：:We have constructed an actin-HIS4 gene fusion, such that expression of HIS4 requires proper splicing of the actin intron. Using this chimeric gene in an in vivo screen for splicing mutations, we have isolated a G to A transition in the fifth position of the yeast 5' consensus sequence/GTAPyGT. This mutation still allo...

journal_title：Cell

authors： Parker R,Guthrie C

更新日期：1985-05-01 00:00:00

abstract：:We have examined the long-range distribution of double-stranded DNA cleavage sites for Drosophila melanogaster topoisomerase II. These studies reveal a novel partitioning of preferred topoisomerase II cleavage sites. In the eukaryotic DNAs examined, major cleavage sites were typically found in nontranscribed spacer se...

journal_title：Cell

authors： Udvardy A,Schedl P,Sander M,Hsieh TS

更新日期：1985-04-01 00:00:00

abstract：:A 1.1 kb intron containing an open reading frame (ORF) in one allele (omega+) of the yeast mitochondrial 21S rRNA gene is nearly quantitatively inserted in crosses into a 21S rRNA allele lacking that intron (omega-). We have determined that this nonreciprocal exchange initiates soon after cells fuse to form zygotes an...

journal_title：Cell

authors： Zinn AR,Butow RA

更新日期：1985-04-01 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：:In many cases the multiple genes coding for one specific tRNA are dispersed throughout the genome. The members of such a gene family nevertheless maintain a common nucleotide sequence during evolution. A major mechanism contributing to this concerted evolution is intergenic conversion. Here we show that it occurs betw...

journal_title：Cell

authors： Amstutz H,Munz P,Heyer WD,Leupoid U,Kohli J

更新日期：1985-04-01 00:00:00

abstract：:A clone encoding PrP 27-30, the major protein in purified preparations of scrapie agent, was selected from a scrapie-infected hamster brain cDNA library by oligonucleotide probes corresponding to the N terminus of the protein. Southern blotting with PrP cDNA revealed a single gene with the same restriction patterns in...

journal_title：Cell

authors： Oesch B,Westaway D,Wälchli M,McKinley MP,Kent SB,Aebersold R,Barry RA,Tempst P,Teplow DB,Hood LE

更新日期：1985-04-01 00:00:00

abstract：:A transglutaminase-catalyzed cross-linking process characteristic of keratinocytes leads to the formation of the insoluble corneocyte envelope. The essentials of this process take place in vitro in a reconstituted system derived from subcellular fractions. A particulate fraction containing membrane-bound envelope prec...

journal_title：Cell

authors： Simon M,Green H

更新日期：1985-03-01 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：:DNA repair was measured in the dihydrofolate reductase gene in Chinese hamster ovary cells, amplified for the gene, by quantitating pyrimidine dimers with a specific UV-endonuclease. More than two thirds of the dimers had been removed from a 14.1 kb restriction fragment of the gene by 26 hr after irradiation (20 J/m2)...

journal_title：Cell

authors： Bohr VA,Smith CA,Okumoto DS,Hanawalt PC

更新日期：1985-02-01 00:00:00

abstract：:The achaete-scute gene complex (AS-C), involved in differentiation of the sensory chaetes of D. melanogaster, and the yellow locus have been cloned. The yellow locus is the most distal and is followed, proximally, by the achaete and the scute loci. In the scute locus (75 kb), three transcription units separated by lon...

journal_title：Cell

authors： Campuzano S,Carramolino L,Cabrera CV,Ruíz-Gómez M,Villares R,Boronat A,Modolell J

更新日期：1985-02-01 00:00:00

abstract：:Chimeric histocompatibility genes encoding the amino-terminal (beta 1) domain of the class II Ak beta polypeptide and the carboxy-terminal (C2, transmembrane, and intracytoplasmic) domains of either the class I H-2Ld or H-2Dd molecules were stably introduced into mouse L cells. Although both were transcribed, only 5' ...

journal_title：Cell

authors： McCluskey J,Germain RN,Margulies DH

更新日期：1985-02-01 00:00:00

abstract：:S. cerevisiae strains containing RAS2val19, a RAS2 gene with a missense mutation analogous to one that activates the transforming potential of mammalian ras genes, have growth and biochemical properties strikingly similar to yeast strains carrying IAC or bcy1. Yeast strains carrying the IAC mutation have elevated leve...

journal_title：Cell

authors： Toda T,Uno I,Ishikawa T,Powers S,Kataoka T,Broek D,Cameron S,Broach J,Matsumoto K,Wigler M

更新日期：1985-01-01 00:00:00

abstract：:We have performed in vitro kinetic analyses of transcription from the 5S gene promoter in order to resolve the rate-limiting events which lead to accurate transcription of the 5S RNA gene. We demonstrate that a rate-limiting intermediate can be formed during an extended incubation prior to initiation of transcription....

journal_title：Cell

authors： Bieker JJ,Martin PL,Roeder RG

更新日期：1985-01-01 00:00:00

abstract：:Using a cloned cDNA complementary to a portion of the mRNA for the 50 kd human epidermal keratin, we have screened a human genomic library and have isolated and sequenced the gene encoding this keratin. A comparison of the keratin gene with the very distantly related vimentin gene has enabled us to explore the relatio...

journal_title：Cell

authors： Marchuk D,McCrohon S,Fuchs E

更新日期：1984-12-01 00:00:00

abstract：:We have used liposomes to deliver DNAase I inside normal Syrian hamster embryo (SHE) cells. We showed the entrance of DNAase I inside the cell by dose-dependent cytotoxicity; and the entrance of DNAase I into the nucleus by the induction of chromosomal aberrations and somatic mutation at the HPRT locus (but not at the...

journal_title：Cell

authors： Zajac-Kaye M,Ts'o PO

更新日期：1984-12-01 00:00:00

abstract：:A unique DNA structural intermediate associated with termination of replication in Bacillus subtilis has been identified. This was achieved by probing for the Bam HI DNA fragment within which the terminus of the chromosome (terC) resides. The intermediate migrates more slowly than the bulk of digested chromosomal DNA ...

journal_title：Cell

authors： Weiss AS,Wake RG

更新日期：1984-12-01 00:00:00

abstract：:Using a combination of classical genetics, serology, and molecular genetics, we have mapped as many as possible of the MHC components in t haplotypes. Results indicate that the whole MHC is included in a simple inversion with the relative positions of its genes being intact. Furthermore, some of the t-lethal mutations...

journal_title：Cell

authors： Shin HS,Bennett D,Artzt K

更新日期：1984-12-01 00:00:00

abstract：:Treatment of guinea pig neutrophils with pertussis toxin (islet-activating protein; IAP) results in inhibition of N-formyl peptide receptor-mediated release of arachidonic acid and granular enzymes. Inhibition by the toxin is specific, in that responses to the calcium ionophore A23187 are not affected. The action of t...

journal_title：Cell

authors： Bokoch GM,Gilman AG

更新日期：1984-12-01 00:00:00

abstract：:The kinetics of association of epidermal growth factor (EGF) and diferric-transferrin (TF) with clathrin-coated membranes of KB cells were examined using anti-clathrin antibody bound to Staphylococcus aureus. The ligands were bound to cells at 4 degrees C and after warming to 30 degrees C for 5 min, both ligands were ...

journal_title：Cell

authors： Hanover JA,Willingham MC,Pastan I

更新日期：1984-12-01 00:00:00

abstract：:We have prepared polyclonal antibodies to the cytoplasmic portion of the envelope glycoprotein G of vesicular stomatitis virus (VSV) by using synthetic peptides corresponding to either the 22 or 11 ultimate carboxy-terminal residues of the G as immunogens. When antibodies to the 22 residue peptide are microinjected in...

journal_title：Cell

authors： Arnheiter H,Dubois-Dalcq M,Lazzarini RA

更新日期：1984-11-01 00:00:00

abstract：:We present evidence that Tn10 transposase promotes double strand breaks and single strand joints at Tn10 termini in vivo. Plasmids containing a shortened Tn10 element and a transposase overproducer fusion give rise, upon transposase induction, to new DNA species. The most prominent class is a circularized transposon m...

journal_title：Cell

authors： Morisato D,Kleckner N

更新日期：1984-11-01 00:00:00

abstract：:We examine the interaction between polyoma-virus-encoded middle tumor antigen and the cellular src gene product, pp60c-src, using a series of monoclonal antibodies that recognize mammalian pp60c-src. Our results show that infection of mouse cells with transformation-competent strains of polyoma virus results in the st...

journal_title：Cell

authors： Bolen JB,Thiele CJ,Israel MA,Yonemoto W,Lipsich LA,Brugge JS

更新日期：1984-10-01 00:00:00