Abstract:
:The Plant Ontology Consortium (POC, http://www.plantontology.org) is a collaborative effort among model plant genome databases and plant researchers that aims to create, maintain and facilitate the use of a controlled vocabulary (ontology) for plants. The ontology allows users to ascribe attributes of plant structure (anatomy and morphology) and developmental stages to data types, such as genes and phenotypes, to provide a semantic framework to make meaningful cross-species and database comparisons. The POC builds upon groundbreaking work by the Gene Ontology Consortium (GOC) by adopting and extending the GOC's principles, existing software and database structure. Over the past year, POC has added hundreds of ontology terms to associate with thousands of genes and gene products from Arabidopsis, rice and maize, which are available through a newly updated web-based browser (http://www.plantontology.org/amigo/go.cgi) for viewing, searching and querying. The Consortium has also implemented new functionalities to facilitate the application of PO in genomic research and updated the website to keep the contents current. In this report, we present a brief description of resources available from the website, changes to the interfaces, data updates, community activities and future enhancement.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Avraham S,Tung CW,Ilic K,Jaiswal P,Kellogg EA,McCouch S,Pujar A,Reiser L,Rhee SY,Sachs MM,Schaeffer M,Stein L,Stevens P,Vincent L,Zapata F,Ware Ddoi
10.1093/nar/gkm908subject
Has Abstractpub_date
2008-01-01 00:00:00pages
D449-54issue
Database issueeissn
0305-1048issn
1362-4962pii
36/suppl_1/D449journal_volume
36pub_type
杂志文章abstract::During DNA double-strand break and replication fork repair by homologous recombination, the RAD51 recombinase catalyzes the DNA strand exchange reaction via a helical polymer assembled on single-stranded DNA, termed the presynaptic filament. Our published work has demonstrated a dual function of the SWI5-SFR1 complex ...
journal_title:Nucleic acids research
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abstract::A fluoride-cleavable phosphoramidite for biotinylation was designed, synthesized and coupled efficiently to the 5'-end of DNA on an automatic synthesizer. The diisopropylsilyl acetal functionality was used to link the biotin moiety through a tertiary hydroxide group to the 5'-end of DNA. This linkage proved to be comp...
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abstract::Gene trap mutagenesis of mouse embryonic stem cells generates random loss-of-function mutations, which can be identified by a sequence tag and can often report the endogenous expression of the mutated gene. The Centre for Modeling Human Disease is performing expression- and sequence-based screens of gene trap insertio...
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abstract::Cyclic AMP response element binding protein (CREB) activates transcription of cAMP response element (CRE)-containing promoters following an elevation of intracellular cAMP. Here we show that CREB and the highly related protein ATF-1 are also potent transcription inhibitors. Strikingly, CREB inhibits transcription of m...
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journal_title:Nucleic acids research
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doi:10.1093/nar/30.8.1767
更新日期:2002-04-15 00:00:00
abstract::A new restriction endonuclease Bse SI has been isolated from Bacillus stearothermophilus Jo10-553. Bse SI recognizes a degenerate hexanucleotide sequence 5'-G(G/T)GC(A/C)C-3' and cleaves DNA to produce 3[prime]-protruding tetranucleotide ends. ...
journal_title:Nucleic acids research
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abstract::Adaptive Laboratory Evolution (ALE) has emerged as an experimental approach to discover causal mutations that confer desired phenotypic functions. ALE not only represents a controllable experimental approach to systematically discover genotype-phenotype relationships, but also allows for the revelation of the series o...
journal_title:Nucleic acids research
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abstract::An enzyme activity introducing an alkali-labile site at 2-hydroxyadenine (2-OH-A) in double-stranded oligonucleotides was detected in nuclear extracts of Jurkat cells. This activity co-eluted with activities toward adenine paired with guanine and 8-oxo-7,8-dihydroguanine (8-oxoG) as a single peak corresponding to a 55...
journal_title:Nucleic acids research
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doi:10.1093/nar/28.6.1355
更新日期:2000-03-15 00:00:00
abstract::The vertebrate genome is a mosaic of regions differing dramatically in their G + C content. Those regions with a high G + C content contain the expected number of CpG dinucleotides and we propose that following methylation these have been protected from deamination by the increased stability of the surrounding DNA dup...
journal_title:Nucleic acids research
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journal_title:Nucleic acids research
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更新日期:2008-11-01 00:00:00
abstract::The Bacillus cereus genome possesses three type IA topoisomerase genes. These genes, encoding DNA topoisomerase I and IIIalpha (bcTopo I, bcTopo IIIalpha), have been cloned into T7 RNA polymerase-regulated plasmid expression vectors and the enzymes have been overexpressed, purified and characterized. The proteins exhi...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gki846
更新日期:2005-09-28 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
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journal_title:Nucleic acids research
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journal_title:Nucleic acids research
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abstract::The NCBI has introduced two new web resources-LocusLink and RefSeq-that facilitate retrieval of gene-based information and provide reference sequence standards. These resources are designed to provide a non-redundant view of current knowledge about human genes, transcripts and proteins. Additional information about th...
journal_title:Nucleic acids research
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journal_title:Nucleic acids research
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journal_title:Nucleic acids research
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更新日期:1995-10-25 00:00:00
abstract::Prior work has indicated that an octanucleotide [5'TATAAGTA(+1)3'] sequence is used as a promoter in yeast mitochondria. Two such sequences (FP1 and FP2) are present upstream of the tRNA(fMet)-RNAse P RNA -tRNA(Pro) gene cluster but only the FP1 promoter but not the FP2 appears to be active in vivo and in vitro. The r...
journal_title:Nucleic acids research
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更新日期:1991-11-11 00:00:00
abstract::The Network of Cancer Genes (NCG) collects and integrates data on 736 human genes that are mutated in various types of cancer. For each gene, NCG provides information on duplicability, orthology, evolutionary appearance and topological properties of the encoded protein in a comprehensive version of the human protein-p...
journal_title:Nucleic acids research
pub_type: 杂志文章
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更新日期:2010-01-01 00:00:00
abstract::Two fragments cloned from purified human satellite III DNA do not cross-react with each other. One fragment, for which a partial sequence is reported, hybridises to satellite II as well as III and is shown to originate on chromosome 1. The other cloned fragment originates from the Y chromosome. This fragment has under...
journal_title:Nucleic acids research
pub_type: 杂志文章
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