Abstract:
:Deletions and other chromosomal rearrangements can be generated by recombination between repeated sequences. It has been shown in a number of systems that the probability of exchange or gene conversion decreases with increasing distance between repeats. This paper examines the question of how repeats find each other, using deletion formation in bacteriophage T4 as a model system. Homologous sequences adjacent to the repeats can either stimulate or inhibit recombination, depending on their orientation. I present evidence that the spatial separation between repeats is the key determinant of the distance dependence and conclude that adjacent homologous sequences affect recombination by aligning chromosomes so as to position the recombining sites either closer together or farther apart. Analogous examples of apparent 'targeting' by homologous sequences in eukaryotes and other prokaryotes are noted.
journal_name
Genes Devjournal_title
Genes & developmentauthors
Singer BSdoi
10.1101/gad.2.12b.1800subject
Has Abstractpub_date
1988-12-01 00:00:00pages
1800-11issue
12Beissn
0890-9369issn
1549-5477journal_volume
2pub_type
杂志文章abstract::Signal transduction through the FGF receptor is essential for the specification of the vertebrate body plan. Blocking the FGF pathway in early Xenopus embryos inhibits mesoderm induction and results in truncation of the anterior-posterior axis. The Drosophila gene sprouty encodes an antagonist of FGF signaling, which ...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.191301
更新日期:2001-05-01 00:00:00
abstract::The RNA polymerase II core promoter is a structurally and functionally diverse transcriptional module. RNAi depletion and overexpression experiments revealed a genetic circuit that controls the balance of transcription from two core promoter motifs, the TATA box and the downstream core promoter element (DPE). In this ...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1681808
更新日期:2008-09-01 00:00:00
abstract::Expression of HNF-4, a transcription factor in the steroid hormone receptor superfamily, is detected only in the visceral endoderm of mouse embryos during gastrulation and is expressed in certain embryonic tissues from 8.5 days of gestation. To examine the role of HNF-4 during embryonic development, we disrupted the g...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.8.20.2466
更新日期:1994-10-15 00:00:00
abstract::Animals alter their reproductive programs to accommodate changes in nutrient availability, yet the connections between known nutrient-sensing systems and reproductive programs are underexplored, and whether there is a mechanism that senses nucleotide levels to coordinate germline proliferation is unknown. We establish...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.275107.115
更新日期:2016-02-01 00:00:00
abstract::S-phase cyclin-dependent kinase Cdc28-Clb5 (CDK-S) and Dbf4-dependent kinase Cdc7-Dbf4 (DDK) are highly conserved kinases well known for their roles in the initiation of DNA replication. CDK-S is also essential for initiation of meiotic recombination because it phosphorylates Ser30 of Mer2, a meiosis-specific double-s...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1626408
更新日期:2008-02-01 00:00:00
abstract::Cyclin D1 is part of a cell cycle control node consistently deregulated in most human cancers. However, studies with cyclin D1-null mice indicate that it is dispensable for normal mouse development as well as cell growth in culture. Here, we provide evidence that ras-mediated tumorigenesis depends on signaling pathway...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.12.16.2469
更新日期:1998-08-15 00:00:00
abstract::Two broad gene classes are distinguished within multicellular organisms: cell type-specific genes, which confer particular cellular properties, and ubiquitous genes that support general cellular functions. However, certain so-called ubiquitous genes show functionally relevant cell type-specific repression. How such re...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.287904.116
更新日期:2016-09-15 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
pub_type: 杂志文章
doi:10.1101/gad.7.5.833
更新日期:1993-05-01 00:00:00
abstract::In the cytoplasm of oocytes and early embryos, addition of poly(A) to mRNAs can activate their translation. We demonstrate that despite many differences between poly(A) addition in the cytoplasm and nucleus, these two forms of polyadenylation may involve identical trans-acting factors. Nuclear polyadenylation requires...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.8.9.1106
更新日期:1994-05-01 00:00:00
abstract::Transcriptional activation of the human U1 snRNA genes is dependent on a noncanonical octamer element contained within an upstream enhancer. The U1 octamer only weakly recruits the Oct-1 POU domain, although recruitment is stimulated by a peptide containing the Oct-1-binding domain of SNAP190. Structural analysis of t...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1021002
更新日期:2002-11-01 00:00:00
abstract::U6 small nuclear RNA is one of the spliceosomal RNAs involved in pre-mRNA splicing. In the fission yeast Schizosaccharomyces pombe, the U6 RNA gene was found to have an intron similar to a nuclear pre-mRNA intron, and it was proposed that the U6 intron might be inserted erroneously during pre-mRNA splicing. Using the ...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.5.6.1022
更新日期:1991-06-01 00:00:00
abstract::The cooperation of oncogenes in the transformation of primary rat Schwann cells is a strikingly synergistic process. We have explored the molecular mechanisms involved. Activation of an inducible Raf kinase results in morphologically transformed cells that are arrested in G1 via the induction of p21(CiP1) and subseque...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.11.5.663
更新日期:1997-03-01 00:00:00
abstract::Alternative pre-mRNA splicing determines many changes in gene expression during development. Two regulators known to control splicing patterns during neuron and muscle differentiation are the polypyrimidine tract-binding protein (PTB) and its neuronal homolog nPTB. These proteins repress certain exons in early myoblas...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1500707
更新日期:2007-01-01 00:00:00
abstract::We have investigated the DNA-binding, oligomerization, and trans-activation functions of isolated segments of murine p53. We find that p53 has two autonomous DNA-binding regions. One domain, from amino acid 280 to 390, forms stable tetramers and binds DNA nonspecifically. The biological significance, if any, of this D...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.7.12b.2575
更新日期:1993-12-01 00:00:00
abstract::The Bloom's syndrome gene (BLM) plays a pivotal role in the maintenance of genomic stability in somatic cells. It encodes a DNA helicase (BLM) of the RecQ family, but the exact function of BLM remains elusive. To study this question, we have cloned the BLM homolog of the frog Xenopus laevis (xBLM) and have raised anti...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.822400
更新日期:2000-10-15 00:00:00
abstract::Mitotic duration is determined by activation of the anaphase-promoting complex/cyclosome (APC/C) bound to its coactivator, Cdc20. Kinetochores, the microtubule-interacting machines on chromosomes, restrain mitotic exit when not attached to spindle microtubules by generating a Cdc20-containing complex that inhibits the...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.302067.117
更新日期:2017-06-01 00:00:00
abstract::The nuclear receptor peroxisome proliferator-activated receptor γ (PPARγ) is known to regulate lipid metabolism in many tissues, including macrophages. Here we report that peritoneal macrophage respiration is enhanced by rosiglitazone, an activating PPARγ ligand, in a PPARγ-dependent manner. Moreover, PPARγ is require...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.312355.118
更新日期:2018-08-01 00:00:00
abstract::The transcription factor NF-kappaB is a critical regulator of inflammatory and cell survival signals. Proteasomal degradation of NF-kappaB subunits plays an important role in the termination of NF-kappaB activity, and at least one of the identified ubiquitin ligases is a multimeric complex containing Copper Metabolism...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1748409
更新日期:2009-04-01 00:00:00
abstract::Binding of microRNA (miRNA) to mRNA within the RNA-induced silencing complex (RISC) leads to either translational inhibition or to destruction of the target mRNA. Both of these functions are executed by Argonaute 2 (Ago2). Using hematopoiesis in mice as a model system to study the physiological function of Ago2 in viv...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1565607
更新日期:2007-08-15 00:00:00
abstract::Sox10 is a high-mobility-group transcriptional regulator in early neural crest. Without Sox10, no glia develop throughout the peripheral nervous system. Here we show that Sox10 is restricted in the central nervous system to myelin-forming oligodendroglia. In Sox10-deficient mice progenitors develop, but terminal diffe...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.215802
更新日期:2002-01-15 00:00:00
abstract::Identifying modifiers of dosage-sensitive genes involved in neurodegenerative disorders is imperative to discover novel genetic risk factors and potential therapeutic entry points. In this study, we focus on Ataxin-1 (ATXN1), a dosage-sensitive gene involved in the neurodegenerative disease spinocerebellar ataxia type...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.339317.120
更新日期:2020-09-01 00:00:00
abstract::The catalytic RNA subunit (M1 RNA) of RNase P from Escherichia coli has been converted to an endoribonuclease that specifically cleaves the mRNA that encodes thymidine kinase (TK) of herpes simplex virus 1 (HSV-1). Covalent attachment to the 3' end of M1 RNA of a sequence complementary to TK mRNA results in very effic...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.9.4.471
更新日期:1995-02-15 00:00:00
abstract::Pre-rRNA transcription by RNA Polymerase I (Pol I) is very robust on active rDNA repeats. Loss of yeast Topoisomerase I (Top1) generated truncated pre-rRNA fragments, which were stabilized in strains lacking TRAMP (Trf4/Trf5-Air1/Air2-Mtr4 polyadenylation complexes) or exosome degradation activities. Loss of both Top1...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.573310
更新日期:2010-07-15 00:00:00
abstract::The yeast SAGA (Spt-Ada-Gcn5-acetyltransferase) coactivator complex exerts functions in gene expression, including activator interaction, histone acetylation, histone deubiquitination, mRNA export, chromatin recognition, and regulation of the basal transcription machinery. These diverse functions involve distinct modu...
journal_title:Genes & development
pub_type: 杂志文章,评审
doi:10.1101/gad.184705.111
更新日期:2012-03-15 00:00:00
abstract::We report the discovery of mRNA 5'-leader trans-splicing (SL trans-splicing) in the chordates. In the ascidian protochordate Ciona intestinalis, the mRNAs of at least seven genes undergo trans-splicing of a 16-nucleotide 5'-leader apparently derived from a 46-nucleotide RNA that shares features with previously charact...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.865401
更新日期:2001-02-01 00:00:00
abstract::Somitogenesis involves the segmentation of the paraxial mesoderm into units along the anteroposterior axis. Here we show a role for Eph and ephrin signaling in the patterning of presomitic mesoderm and formation of the somites. Ephrin-A-L1 and ephrin-B2 are expressed in an iterative manner in the developing somites an...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.12.19.3096
更新日期:1998-10-01 00:00:00
abstract::A relevant, yet little recognized feature of antisense regulation is the possibility of switching roles between regulatory and regulated RNAs. Here we show that induction of a Salmonella gene relies on the conversion of a small RNA from effector to regulatory target. The chiP gene (formerly ybfM), identified and chara...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.541609
更新日期:2009-09-01 00:00:00
abstract::Actin is associated with all three nuclear RNA polymerases and acts in concert with nuclear myosin I (NM1) to drive transcription. Practically nothing is known regarding the state of actin and the functional interplay of actin and NM1 in transcription. Here we show that actin and NM1 act in concert to promote RNA poly...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.455908
更新日期:2008-02-01 00:00:00
abstract::Directed cell motility is at the basis of biological phenomena such as development, wound healing, and metastasis. It has been shown that substrate attachments mediate motility by coupling the cell's cytoskeleton with force generation. However, it has been unclear how the persistence of cell directionality is facilita...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.190413.112
更新日期:2012-09-01 00:00:00
abstract::eIF2B is a heteropentameric guanine-nucleotide exchange factor essential for protein synthesis initiation in eukaryotes. Its activity is inhibited in response to starvation or stress by phosphorylation of the alpha subunit of its substrate, translation initiation factor eIF2, resulting in reduced rates of translation ...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.12.4.514
更新日期:1998-02-15 00:00:00