Abstract:
:The erbAalpha gene encodes two alpha-thyroid hormone receptor isoforms, TRalpha1 and TRalpha2, which arise from alternatively processed mRNAs, erbAalpha1 (alpha1) and erb alpha2 (alpha2). The splicing and alternative polyadenylation patterns of these mRNAs resemble that of mRNAs encoding different forms of immunoglobulin heavy chains, which are regulated at the level of alternative processing during B cell differentiation. This study examines the levels of erbAalpha mRNA in eight B cell lines representing four stages of differentiation in order to determine whether regulation of the alternatively processed alpha1 and alpha2 mRNAs parallels the processing of immunoglobulin heavy chain mRNAs. Results show that the pattern of alpha1 and alpha2 mRNA expression is clearly different from that observed for immunoglobulin heavy chain mRNAs. B cell lines display characteristic ratios of alpha1/alpha2 mRNA at distinct stages of differentiation. Furthermore, expression of an overlapping gene, Rev-ErbAalpha (RevErb), was found to correlate strongly with an increase in the ratio of alpha1/alpha2 mRNA. These results suggest that alternative processing of erbAalpha mRNAs is regulated by a mechanism which is distinct from that regulating immunoglobulin mRNA. The correlation between RevErb and erbAalpha mRNA is consistent with negative regulation of alpha2 via antisense interactions with the complementary RevErb mRNA.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Hastings ML,Milcarek C,Martincic K,Peterson ML,Munroe SHdoi
10.1093/nar/25.21.4296subject
Has Abstractpub_date
1997-11-01 00:00:00pages
4296-300issue
21eissn
0305-1048issn
1362-4962pii
gka691journal_volume
25pub_type
杂志文章abstract::Enzymes involved in nucleic acid transactions often have a helicase-like ATPase coordinating and driving their functional activities, but our understanding of the mechanistic details of their coordination is limited. For example, DNA cleavage by the antiphage defense system Type ISP restriction-modification enzyme req...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkaa023
更新日期:2020-03-18 00:00:00
abstract::The infection of Pseudomonas aeruginosa by the giant bacteriophage phiKZ is resistant to host RNA polymerase (RNAP) inhibitor rifampicin. phiKZ encodes two sets of polypeptides that are distantly related to fragments of the two largest subunits of cellular multisubunit RNAPs. Polypeptides of one set are encoded by mid...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkv1095
更新日期:2015-12-02 00:00:00
abstract::Equilibrative nucleoside transporters (ENTs) are a recently characterized and poorly understood group of membrane proteins that are important in the uptake of endogenous nucleosides required for nucleic acid and nucleoside triphosphate synthesis. Despite their central importance in cellular metabolism and nucleoside a...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkf564
更新日期:2002-10-15 00:00:00
abstract::Prokaryotes evolved numerous systems that defend against predation by bacteriophages. In addition to well-known restriction-modification and CRISPR-Cas immunity systems, many poorly characterized systems exist. One class of such systems, named BREX, consists of a putative phosphatase, a methyltransferase and four othe...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gky1125
更新日期:2019-01-10 00:00:00
abstract::DNA cytosine-5 methyltransferases (C5-MTases) are valuable models to study sequence-specific modification of DNA and are becoming increasingly important tools for biotechnology. Here we describe a structure-guided rational protein design combined with random mutagenesis and selection to change the specificity of the H...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkp772
更新日期:2009-11-01 00:00:00
abstract::The estrogen receptor (ER) contains two nonacidic transcriptional activation functions, AF-1 and AF-2 (formerly TAF-1 and TAF-2). In this study we show that AF-1 and AF-2 are able to stimulate transcription in vitro in a HeLa cell system when fused to the DNA binding domain of the yeast activator GAL4. We also demonst...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/21.1.5
更新日期:1993-01-11 00:00:00
abstract::Post-translational modifications (PTMs) regulate many aspects of protein function and are indispensable for the spatio-temporal regulation of cellular processes. The proteome-wide identification of PTM targets has made significant progress in recent years, as has the characterization of their writers, readers, modifie...
journal_title:Nucleic acids research
pub_type: 杂志文章,评审
doi:10.1093/nar/gkv1383
更新日期:2016-02-18 00:00:00
abstract::Contrary to the expectation, the Merrifield polystyrene resin, 2% cross-linked by divinylbenzene, is as efficient as the polyacrylmorpholide resin for the synthesis of polydeoxyribonucleotides using a phosphotriester method. On the Merrifield resin, the tetradecamer, dTpCpGpTpCpApApCpTpGpGpCpTpT, and the hexadecamer, ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/8.22.5507
更新日期:1980-11-25 00:00:00
abstract::Characterization of the epigenetic status of individual cells remains a challenge. Current sequencing approaches have limited coverage, and it is difficult to assign an epigenetic status to the transcription state of individual gene alleles in the same cell. To address these limitations, a targeted microscopy-based ep...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkab009
更新日期:2021-01-28 00:00:00
abstract::The DNA replication, plasmid segregation and transactivation functions of Epstein-Barr nuclear antigen 1 (EBNA1) require the binding of EBNA1 to specific DNA recognition sites in the two non-contiguous functional elements of the Epstein-Barr virus latent origin of replication, oriP . EBNA1 molecules bound to these ele...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/26.19.4462
更新日期:1998-10-01 00:00:00
abstract::A common aim in ChIP-seq experiments is to identify changes in protein binding patterns between conditions, i.e. differential binding. A number of peak- and window-based strategies have been developed to detect differential binding when the regions of interest are not known in advance. However, careful consideration o...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gku351
更新日期:2014-06-01 00:00:00
abstract::No analogous nucleoside triphosphate was found which acts as well as ATP in binding to and supporting catalysis of leucyl-tRNA synthetase from Escherichia coli MRE 600. However, there are numerous nucleotides which are able to replace ATP, but with lower efficiency. The 6-amino group of the adenine ring and the 2'-hyd...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/3.8.2067
更新日期:1976-08-01 00:00:00
abstract::We have identified cDNAs encoding Mel-N1, the mouse homologue of a human nervous system-specific RNA-binding protein, Hel-N1. Two major mRNA transcripts of Mel-N1 were detected predominantly in the adult mouse brain by Northern blot analysis. To gain insight into the RNA binding specificity of Mel-N1, we performed ite...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/24.11.2011
更新日期:1996-06-01 00:00:00
abstract::The major surface antigen of procyclic and epimastigote forms of Trypanosoma congolense in the tsetse fly is GARP (glutamic acid/alanine-rich protein), which is thought to be the analogue of procyclin/PARP in Trypanosoma brucei. We have studied two T.congolense GARP loci (the 4.3 and 4.4 loci) whose transcription is a...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/24.2.272
更新日期:1996-01-15 00:00:00
abstract::We have measured the amount of 5S-ribosomal DNA in the genomes of Xenopus laevis, Triturus cristatus carnifex and Ambystoma mexicanum, three species of Amphibians which have widely different C-values. Our best estimate is that these organisms have about 24,000, 32,000 and 61,000 5S-genes per haploid genome respectivel...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/11.8.2381
更新日期:1983-04-25 00:00:00
abstract::For the isolation of single stranded plasmid DNA, various E. coli and E. coli-Streptomyces shuttle plasmids were equipped with the phage f1 replication origin. The transformation of some representative Streptomyces species with plasmid vectors occurred irrespective of whether single or double stranded DNA was used. In...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/19.4.727
更新日期:1991-02-25 00:00:00
abstract::The 2'-5' oligoadenylate synthetases form a well conserved family of interferon induced proteins, presumably present throughout the mammalian class. Using the Expressed Sequence Tag databases, we have identified a novel member of this family. This protein, which we named p59 2'-5' oligoadenylate synthetase-like protei...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/26.18.4121
更新日期:1998-09-15 00:00:00
abstract::The vitamin D receptor mediates the signal of 1 alpha, 25-dihydroxyvitamin D3 by binding to vitamin D responsive elements in DNA as a homodimer or as a heterodimer composed of one vitamin D receptor subunit and one retinoid X receptor subunit. We have mapped the dimerization interfaces of the vitamin D receptor that i...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/23.4.606
更新日期:1995-02-25 00:00:00
abstract::Scanning tunneling microscopy (STM) reveals nanometer scale details of hydrated DNA but the interpretation of the images is controversial because of substrate artifacts and the lack of a theory for image contrast. We demonstrate that we have overcome these problems by identifying five DNA samples by their STM images a...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/21.25.5896
更新日期:1993-12-25 00:00:00
abstract::Archaeal family-B DNA polymerases bind tightly to deaminated bases and stall replication on encountering uracil in template strands, four bases ahead of the primer-template junction. Should the polymerase progress further towards the uracil, for example, to position uracil only two bases in front of the junction, 3'-5...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gks1364
更新日期:2013-02-01 00:00:00
abstract::The Diatom Expressed Sequence Tag (EST) Database was constructed to provide integral access to ESTs from these ecologically and evolutionarily interesting microalgae. It has now been updated with 130,000 Phaeodactylum tricornutum ESTs from 16 cDNA libraries and 77,000 Thalassiosira pseudonana ESTs from seven libraries...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkn905
更新日期:2009-01-01 00:00:00
abstract::Recent research hints at an underappreciated complexity in pre-miRNA processing and regulation. Global profiling of pre-miRNA and its potential to increase understanding of the pre-miRNA landscape is impeded by overlap with highly expressed classes of other non coding (nc) RNA. Here, we present a data set excluding th...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkr903
更新日期:2012-02-01 00:00:00
abstract::Point mutations in mitochondrial tRNA genes are responsible for individual subgroups of mitochondrial encephalomyopathies. We have recently reported that point mutations in the tRNA(Leu)(UUR) and tRNA(Lys) genes cause a defect in the normal modification at the first nucleotide of the anticodon. As part of a systematic...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/28.19.3779
更新日期:2000-10-01 00:00:00
abstract::cDNA cloning is a central technology in molecular biology. cDNA sequences are used to determine mRNA transcript structures, including splice junctions, open reading frames (ORFs) and 5'- and 3'-untranslated regions (UTRs). cDNA clones are valuable reagents for functional studies of genes and proteins. Expressed Sequen...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gni184
更新日期:2005-12-02 00:00:00
abstract::While it has been long recognized that genes are not randomly positioned along the genome, the degree to which its 3D structure influences the arrangement of genes has remained elusive. In particular, several lines of evidence suggest that actively transcribed genes are spatially co-localized, forming transcription fa...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gks1360
更新日期:2013-02-01 00:00:00
abstract::DNA mismatches are highly polymorphic and dynamic in nature, albeit poorly characterized structurally. We utilized the antitumour antibiotic CoII(Chro)2 (Chro = chromomycin A3) to stabilize the palindromic duplex d(TTGGCGAA) DNA with two G:G mismatches, allowing X-ray crystallography-based monitoring of mismatch polym...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkz653
更新日期:2019-09-19 00:00:00
abstract::Redefinition of UAG, UAA and UGA to specify a standard amino acid occurs in response to recoding signals present in a minority of mRNAs. This 'read-through' is in competition with termination and is utilized for gene expression. One of the recoding signals known to stimulate read-through is a hexanucleotide sequence o...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/30.9.2011
更新日期:2002-05-01 00:00:00
abstract::The nucleotide sequence of Drosophila melanogaster methionine tRNAi was determined to be: pA-G-C-A-G-A-G-U-m1G-m2G-C-G-C-A-G-U-G-G-A-A-G-C-G-U-m2G-C-U-G-G-G-C-C-C-A-U-t6A-A-C-C-C-A-G-A-G-m7G-D-m5C-C-C-G-A-G-G-A-U-C-G-m1A-A-A-C-C-U-U-G-C-U-C-U-G-C-U-A-C-C-A(OH). It differs from vertebrate initiator tRNAs in only 6 out ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/6.2.421
更新日期:1979-02-01 00:00:00
abstract::Human adenovirus mutants that carry a large deletion in early region 4 (E4) are severely defective in the synthesis of viral late proteins. Plasmids that carry intact E4 sequences can complement the late protein synthetic defect of such mutants when introduced into infected cells by transfection, presumably due to the...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/17.8.3037
更新日期:1989-04-25 00:00:00
abstract::RNA polymerase I-catalyzed synthesis of the Schizosaccharomyces pombe approximately 37S pre-rRNAs was shown to be sensitive to regulatory sequences located several kilobases upstream of the initiation site for the rRNA gene. An in vitro transcription system for RNA polymerase I-catalyzed RNA synthesis was established ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/25.3.659
更新日期:1997-02-01 00:00:00