abstract：:The embryonic ectoderm in Drosophila displays a highly organized arrangement of specific structures along the dorsal-ventral axis. To establish this characteristic design, cells must receive instructive cues regarding their position. We present evidence that during stages 8-9 of embryonic development, the Drosophila E...

journal_title：Genes & development

authors： Raz E,Shilo BZ

更新日期：1993-10-01 00:00:00

abstract：:Sexual identity in Drosophila is determined by zygotic X-chromosome dose. Two potent indicators of X-chromosome dose are sisterless-a (sis-a) and sisterless-b (sis-b). Genetic analysis has shown that a diplo-X dose of these genes activates their regulatory target, the feminizing switch gene Sex-lethal (Sxl), whereas a...

journal_title：Genes & development

authors： Erickson JW,Cline TW

更新日期：1993-09-01 00:00:00

abstract：:The mammalian high mobility group proteins HMG1 and HMG2 are abundant, chromatin-associated proteins whose cellular function is not known. In this study we show that these proteins can substitute for the prokaryotic DNA-bending protein HU in promoting the assembly of the Hin invertasome, an intermediate structure in H...

journal_title：Genes & development

authors： Paull TT,Haykinson MJ,Johnson RC

更新日期：1993-08-01 00:00:00

abstract：:Telomerase is a ribonucleoprotein enzyme that adds telomeric repeats to chromosomes, maintaining telomere length and stabilizing chromosome ends. In vitro, telomerase from the ciliate Tetrahymena elongates single-stranded, guanosine-rich DNA primers by adding repeats of the Tetrahymena telomeric sequence, dT2G4. We ha...

journal_title：Genes & development

authors： Collins K,Greider CW

更新日期：1993-07-01 00:00:00

abstract：:Lethal yellow (Ay) is a mutation at the mouse agouti (a) locus that is associated with an all-yellow coat color, obesity, diabetes, tumors in heterozygotes, and preimplantation embryonic lethality in homozygotes. Previously, we cloned and characterized the wild-type agouti gene and demonstrated that it expresses a 0.8...

journal_title：Genes & development

authors： Michaud EJ,Bultman SJ,Stubbs LJ,Woychik RP

更新日期：1993-07-01 00:00:00

abstract：:Two independent two-dimensional (2D) gel methods were used to map an origin of replication that is developmentally regulated by the steroid hormone ecdysone, namely an origin for DNA puff amplification in the fungus fly Sciara coprophila. Initiation of replication was found to occur within a small region of no larger ...

journal_title：Genes & development

authors： Liang C,Spitzer JD,Smith HS,Gerbi SA

更新日期：1993-06-01 00:00:00

abstract：:In budding yeast, a switch between the mutually exclusive pathways of cell cycle progression and conjugation is controlled at Start in late G1 phase. Mating pheromones promote conjugation by arresting cells in G1 phase before Start. Pheromone-induced cell cycle arrest requires a functional FAR1 gene. We have found tha...

journal_title：Genes & development

authors： McKinney JD,Chang F,Heintz N,Cross FR

更新日期：1993-05-01 00:00:00

abstract：:Transformation of primary rodent cells by the adenovirus E1A and E1B oncogenes is a two-step process, where E1A-dependent induction of proliferation is coupled to E1B-dependent suppression of programmed cell death (apoptosis). The E1B gene encodes two distinct transforming proteins, the 19K and 55K proteins, both of w...

journal_title：Genes & development

authors： Debbas M,White E

更新日期：1993-04-01 00:00:00

abstract：:The product of the zygotically active decapentaplegic (dpp) gene appears to function as a morphogen that specifies positional information in the dorsal half of the Drosophila embryo. The dorsal-specific transcription of dpp is the key step in establishing a morphogen gradient. We demonstrate here that multiple regions...

journal_title：Genes & development

authors： Huang JD,Schwyter DH,Shirokawa JM,Courey AJ

更新日期：1993-04-01 00:00:00

abstract：:The HAT4 gene from the plant Arabidopsis thaliana encodes a homeo domain protein that contains a leucine zipper motif. Homeo domain-leucine zipper (HD-Zip) proteins have not been found in animal systems, suggesting that HAT4 may define a new family of transcription factors that regulate higher plant development. To ex...

journal_title：Genes & development

authors： Schena M,Lloyd AM,Davis RW

更新日期：1993-03-01 00:00:00

abstract：:The empty spiracles (ems) homeo box gene is required for the development of the Drosophila larval filzkörper, which are structural specializations of the eighth abdominal segment. Filzkörper development is also dependent on the function of the homeotic selector gene Abdominal-B (Abd-B). Here, we show that ems is a dow...

journal_title：Genes & development

authors： Jones B,McGinnis W

更新日期：1993-02-01 00:00:00

abstract：:TFIID is a multisubunit protein containing the TATA box-binding polypeptide (TBP) and associated factors (TFIID-TAFs) required for activated transcription by RNA polymerase II. TBPs from different eukaryotes contain a highly conserved carboxy-terminal domain and very divergent amino-terminal domains. Earlier studies p...

journal_title：Genes & development

authors： Zhou Q,Boyer TG,Berk AJ

更新日期：1993-02-01 00:00:00

abstract：:We have analyzed pre-mRNA splicing in yeast extracts immunodepleted of the PRP18 protein. We find that while the first step of splicing (cleavage at the 5' splice site, and generation of the exon 1 and lariat intermediates) is unaffected by the absence of PRP18, the second step of splicing (excision of the lariat intr...

journal_title：Genes & development

authors： Horowitz DS,Abelson J

更新日期：1993-02-01 00:00:00

abstract：:Viable aristaless (al) mutations of Drosophila affect pattern elements at both ends of the proximodistal axis in a subset of adult appendages. The al gene has been cloned and identified by P-element-mediated germ-line transformation with a genomic DNA fragment, which rescues a lethal mutation of al as well as aspects ...

journal_title：Genes & development

authors： Schneitz K,Spielmann P,Noll M

更新日期：1993-01-01 00:00:00

abstract：:Extensive DNA elimination via a DNA breakage and rejoining process occurs during macronuclear development in the hypotrich ciliate Euplotes crassus. The excision process involves the removal of short, unique segments of DNA (internal eliminated sequences; IESs) and at least two highly repetitive families of transposon...

journal_title：Genes & development

authors： Klobutcher LA,Turner LR,LaPlante J

更新日期：1993-01-01 00:00:00

abstract：:The N-myc gene encodes a putative transcription factor that is thought to function in the regulation of gene expression during cell differentiation and/or growth. To examine the role of N-myc during development, we have used targeted mutagenesis in embryonic stem cells to produce a mouse line that carries an N-myc nul...

journal_title：Genes & development

authors： Charron J,Malynn BA,Fisher P,Stewart V,Jeannotte L,Goff SP,Robertson EJ,Alt FW

更新日期：1992-12-01 00:00:00

abstract：:The Neurospora crassa clock-controlled gene (ccg-2) is transcriptionally activated by the circadian clock in a time-of-day-specific manner. Transcript and sequence analyses of ccg-2 reveal that the predicted Ccg-2 polypeptide bears significant similarity to a class of low-molecular-weight, cysteine-rich, hydrophobic p...

journal_title：Genes & development

authors： Bell-Pedersen D,Dunlap JC,Loros JJ

更新日期：1992-12-01 00:00:00

abstract：:An RNA-binding protein gene (rbp1) from Drosophila melanogaster, encoding an RNA recognition motif and an Arg-Ser rich (RS) domain, has been characterized. The predicted amino acid sequence of rbp1 is similar to those of the human splicing factor ASF/SF2, the Drosophila nuclear phosphoprotein SRp55, and the Drosophila...

journal_title：Genes & development

authors： Kim YJ,Zuo P,Manley JL,Baker BS

更新日期：1992-12-01 00:00:00

abstract：:We have cloned four cyclin-B homologs from Saccharomyces cerevisiae, CLB1-CLB4, using the polymerase chain reaction and low stringency hybridization approaches. These genes form two classes based on sequence relatedness: CLB1 and CLB2 show highest homology to the Schizosaccharomyces pombe cyclin-B homolog cdc13 involv...

journal_title：Genes & development

authors： Richardson H,Lew DJ,Henze M,Sugimoto K,Reed SI

更新日期：1992-11-01 00:00:00

abstract：:A conditional block to transcriptional elongation is an important mechanism for regulating c-myc gene expression. This elongation block within the first c-myc exon was defined originally in mammalian cells by nuclear run-on transcription analyses. Subsequent oocyte injection and in vitro transcription analyses suggest...

journal_title：Genes & development

authors： Krumm A,Meulia T,Brunvand M,Groudine M

更新日期：1992-11-01 00:00:00

abstract：:Coliphage N4 is a double-stranded DNA virus that requires the sequential activity of three different RNA polymerases during infection. The N4 virion RNA polymerase, which is carried in the virion and is injected with the DNA at the start of infection, is responsible for the synthesis of N4 early RNAs. In vitro, the vi...

journal_title：Genes & development

authors： Markiewicz P,Malone C,Chase JW,Rothman-Denes LB

更新日期：1992-10-01 00:00:00

abstract：:Many short-lived mRNAs, including those encoding lymphokines, cytokines, and proto-oncogenes, contain an AU-rich sequence in their 3'-untranslated regions. These AU domains and, more specifically, AUUUA motifs within them, are widely thought to mediate the extreme instability of the corresponding mRNAs. This is most c...

journal_title：Genes & development

authors： Savant-Bhonsale S,Cleveland DW

更新日期：1992-10-01 00:00:00

abstract：:NF-kappa B is an inducible transcription factor comprised of a 50-kD (p50) and a 65-kD (p65) subunit. Induction of NF-kappa B activity, which is a critical event in many signal transduction pathways, involves release from a cytoplasmic inhibitory protein, I kappa B, followed by translocation of the active transcriptio...

journal_title：Genes & development

authors： Beg AA,Ruben SM,Scheinman RI,Haskill S,Rosen CA,Baldwin AS Jr

更新日期：1992-10-01 00:00:00

abstract：:The assembly of activated RNA polymerase II (pol II) transcription complexes has been investigated by assaying whether pre-assembly of intermediate complexes reduces the extended time required for start-site melting. The results show that a closed complex requiring factors IIA, IID, and the acidic activator GAL4-AH fo...

journal_title：Genes & development

authors： Wang W,Gralla JD,Carey M

更新日期：1992-09-01 00:00:00

abstract：:The myc family of cellular oncogenes encodes three highly related nuclear phosphoproteins (c-Myc, N-Myc, and L-Myc) that are believed to function as sequence-specific transcription factors capable of regulating genes important in cellular growth and differentiation. Current evidence indicates that Myc family proteins ...

journal_title：Genes & development

authors： Mukherjee B,Morgenbesser SD,DePinho RA

更新日期：1992-08-01 00:00:00

abstract：:The chromo domain was identified as a homologous protein motif between Polycomb (Pc)--a member of the Pc-group genes encoding transcriptional repressors of the homeotic genes--and HP1--a heterochromatin-associated protein encoded by the suppressor of position effect variegation gene Su(var)205. Together with previous ...

journal_title：Genes & development

authors： Messmer S,Franke A,Paro R

更新日期：1992-07-01 00:00:00

abstract：:Previous work has shown that rRNA synthesis is strongly inhibited in yeast top1-top2 double mutants. Here, we show that inactivation of yeast topoisomerases can have paradoxical effects on transcription by RNA polymerase I. For example, transcription of ribosomal minigenes on extrachromosomal plasmids is greatly stimu...

journal_title：Genes & development

authors： Schultz MC,Brill SJ,Ju Q,Sternglanz R,Reeder RH

更新日期：1992-07-01 00:00:00

abstract：:Export to the cytoplasm of U3 RNA transcribed from a rat U3 gene injected into the nucleus of Xenopus oocytes indicates that the biogenesis of U3 RNA, like that of the previously studied Sm-precipitable nucleoplasmic snRNAs (U1, U2, U4, and U5), includes a cytoplasmic phase. The regulation of import of the U3 snRNA in...

journal_title：Genes & development

authors： Baserga SJ,Gilmore-Hebert M,Yang XW

更新日期：1992-06-01 00:00:00

abstract：:We report a systematic mutational analysis of the helix-turn-helix motif (HTH) of the fushi tarazu (ftz) homeo domain (HD) of Drosophila. We started out by testing the function of chimeric ftz proteins containing either a part of the Sex combs reduced (Scr) or the muscle segment homeobox (msh) HDs. By complementation ...

journal_title：Genes & development

authors： Furukubo-Tokunaga K,Müller M,Affolter M,Pick L,Kloter U,Gehring WJ

更新日期：1992-06-01 00:00:00

abstract：:Two retrovirus promoter trap vectors (U3His and U3Neo) have been used to disrupt genes expressed in totipotent murine embryonal stem (ES) cells. Selection in L-histidinol or G418 produced clones in which the coding sequences for histidinol-dehydrogenase or neomycin-phosphotransferase were fused to sequences in or near...

journal_title：Genes & development

authors： von Melchner H,DeGregori JV,Rayburn H,Reddy S,Friedel C,Ruley HE

更新日期：1992-06-01 00:00:00

abstract：:The NF-kappa B transcription factor complex is comprised of two subunits, p50 and p65, that share significant homology to the rel oncogene. We have isolated a cDNA encoding a novel 66-kD rel-related protein, designated I-Rel. Unlike other rel-related proteins, I-Rel does not interact with DNA. I-Rel forms heterodimers...

journal_title：Genes & development

authors： Ruben SM,Klement JF,Coleman TA,Maher M,Chen CH,Rosen CA

更新日期：1992-05-01 00:00:00

abstract：:In Saccharomyces cerevisiae, the genes encoding the HO endonuclease, G1-specific cyclins CLN1 and CLN2, as well as most proteins involved in DNA synthesis, are periodically transcribed with maximal levels reached in late G1. For HO and the DNA replication genes, cell cycle stage-specific expression has been shown to b...

journal_title：Genes & development

authors： Marini NJ,Reed SI

更新日期：1992-04-01 00:00:00

abstract：:The organizer region, or dorsal blastopore lip, plays a central role in the initiation of gastrulation and the formation of the body axis during Xenopus development. A similar process can also be induced in ectodermal explants by activin or by injection of activin mRNA into embryos. We have searched early embryo-speci...

journal_title：Genes & development

authors： Dirksen ML,Jamrich M

更新日期：1992-04-01 00:00:00

abstract：:A novel cysteine-rich motif, named LIM, has been identified in the homeo box genes lin-11, Isl-1, and mec-3; the mec-3 and lin-11 genes determine cell lineages in Caenorhabditis elegans. We isolated LIM class homeo box genes from Xenopus laevis that are closely related to lin-11 and mec-3 in the LIM and homeo domains....

journal_title：Genes & development

authors： Taira M,Jamrich M,Good PJ,Dawid IB

更新日期：1992-03-01 00:00:00

abstract：:Nucleosomes are positioned in the presence of the yeast repressor alpha 2 in minichromosomes containing the alpha 2 operator and on the promoters of a-cell-specific genes regulated by alpha 2. To investigate the possibility that alpha 2 directs nucleosome position through an interaction with a component of the core pa...

journal_title：Genes & development

authors： Roth SY,Shimizu M,Johnson L,Grunstein M,Simpson RT

更新日期：1992-03-01 00:00:00

abstract：:Influenza virus unspliced NS1 mRNA, like retroviral pre-mRNAs, is efficiently exported from the nucleus and translated in the cytoplasm of infected cells. With human immunodeficiency virus (HIV), the transport of viral pre-mRNAs is facilitated by the viral Rev protein. We tested the possibility that the influenza viru...

journal_title：Genes & development

authors： Alonso-Caplen FV,Nemeroff ME,Qiu Y,Krug RM

更新日期：1992-02-01 00:00:00

abstract：:We have studied the effect of exogenous expression of the basal transcription factor TFIID on the activities of several different TATA-containing and TATA-lacking promoters. Overexpression of TFIID from a transfected plasmid in Drosophila Schneider cells resulted in substantial concentration-dependent increases in exp...

journal_title：Genes & development

authors： Colgan J,Manley JL

更新日期：1992-02-01 00:00:00

abstract：:In the Bar mutation of Drosophila, ommatidial differentiation is known to be suppressed in the anterior portion of the eye. Our structural analysis shows that the Bar region contains a pair of homeo box genes, BarH1 and BarH2. These genes encode polypeptides similar in size and sequence and share a common homeo domain...

journal_title：Genes & development

authors： Higashijima S,Kojima T,Michiue T,Ishimaru S,Emori Y,Saigo K

更新日期：1992-01-01 00:00:00

abstract：:Expression of both N-myc and c-myc is induced rapidly and dramatically in normal pre-B cells after stimulation with interleukin-7 (IL-7), a pre-B cell-specific growth factor. These IL-7-induced increases in N-myc and c-myc expression are mediated at the transcriptional level; for N-myc, a major portion of the inductio...

journal_title：Genes & development

authors： Morrow MA,Lee G,Gillis S,Yancopoulos GD,Alt FW

更新日期：1992-01-01 00:00:00

abstract：:The formins constitute a set of protein isoforms encoded by the alternatively spliced transcripts arising from the limb deformity (ld) locus of the mouse. Mutations in this locus disrupt formation of the anteroposterior axis of the embryonic limb. Although ld transcripts are widely expressed during embryogenesis, we h...

journal_title：Genes & development

authors： Jackson-Grusby L,Kuo A,Leder P

更新日期：1992-01-01 00:00:00