http://biblioteca.universia.net/verColeccion.do?id=4032 Mostrando recursos 1 - 20 de 50,776 es http://biblioteca.universia.net/img/logotipo.jpg http://biblioteca.universia.net/ http://biblioteca.universia.net/ficha.do?id=5082351 Rhee, Seung Yon; Crosby, Bill http://biblioteca.universia.net/ficha.do?id=5082352 The burden of noninteroperability between on-line genomic resources is increasingly the rate-limiting step in large-scale genomic analysis. BioMOBY is a biological Web Service interoperability initiative that began as a retreat of representatives from the model organism database community in September, 2001. Its long-term goal is to provide a simple, extensible platform through which the myriad of on-line biological databases and analytical tools can offer their information and analytical ser... Wilkinson, Mark; Schoof, Heiko; Ernst, Rebecca; Haase, Dirk http://biblioteca.universia.net/ficha.do?id=5082353 We have developed a rice (Oryza sativa) genome annotation database (Osa1) that provides structural and functional annotation for this emerging model species. Using the sequence of O. sativa subsp. japonica cv Nipponbare from the International Rice Genome Sequencing Project, pseudomolecules, or virtual contigs, of the 12 rice chromosomes were constructed. Our most recent release, version 3, represents our third build of the pseudomolecules and is composed of 98% finished sequence. Genes were i... Yuan, Qiaoping; Ouyang, Shu; Wang, Aihui; Zhu, Wei; Maiti, Rama; Lin, Haining; Hamilton, John; Haas, Brian; Sultana, Razvan; Cheung, Foo; Wortman, Jennifer; Buell, C. Robin http://biblioteca.universia.net/ficha.do?id=5082354 MetaCyc (http://metacyc.org) contains experimentally determined biochemical pathways to be used as a reference database for metabolism. In conjunction with the Pathway Tools software, MetaCyc can be used to computationally predict the metabolic pathway complement of an annotated genome. To increase the breadth of pathways and enzymes, more than 60 plant-specific pathways have been added or updated in MetaCyc recently. In contrast to MetaCyc, which contains metabolic data for a wide range of o... Zhang, Peifen; Foerster, Hartmut; Tissier, Christophe P.; Mueller, Lukas; Paley, Suzanne; Karp, Peter D.; Rhee, Seung Y. http://biblioteca.universia.net/ficha.do?id=5082355 An international consortium is sequencing the euchromatic genespace of Medicago truncatula. Extensive bioinformatic and database resources support the marker-anchored bacterial artificial chromosome (BAC) sequencing strategy. Existing physical and genetic maps and deep BAC-end sequencing help to guide the sequencing effort, while EST databases provide essential resources for genome annotation as well as transcriptome characterization and microarray design. Finished BAC sequences are joined in... Cannon, Steven B.; Crow, John A.; Heuer, Michael L.; Wang, Xiaohong; Cannon, Ethalinda K.S.; Dwan, Christopher; Lamblin, Anne-Francoise; Vasdewani, Jayprakash; Mudge, Joann; Cook, Andrew; Gish, John; Cheung, Foo; Kenton, Steve; Kunau, Timothy M.; Brown, Douglas; May, Gregory D.; Kim, Dongjin; Cook, Douglas R.; Roe, Bruce A.; Town, Chris D.; Young, Nevin D.; Retzel, Ernest F. http://biblioteca.universia.net/ficha.do?id=5082356 The genome-wide protein sequences from Arabidopsis (Arabidopsis thaliana) and rice (Oryza sativa) spp. japonica were clustered into families using sequence similarity and domain-based clustering. The two fundamentally different methods resulted in separate cluster sets with complementary properties to compensate the limitations for accurate family analysis. Functional names for the identified families were assigned with an efficient computational approach that uses the description of the most... Horan, Kevin; Lauricha, Josh; Bailey-Serres, Julia; Raikhel, Natasha; Girke, Thomas http://biblioteca.universia.net/ficha.do?id=5082357 The Maize Genetics and Genomics Database (MaizeGDB) serves the maize (Zea mays) research community by making a wealth of genetics and genomics data available through an intuitive Web-based interface. The goals of the MaizeGDB project are 3-fold: to provide a central repository for public maize information; to present the data through the MaizeGDB Web site in a way that recapitulates biological relationships; and to provide an array of computational tools that address biological questions in a... Lawrence, Carolyn J.; Seigfried, Trent E.; Brendel, Volker http://biblioteca.universia.net/ficha.do?id=5082358 The Swiss-Prot, TrEMBL, Protein Information Resource (PIR), and DNA Data Bank of Japan (DDBJ) protein database activities have united to form the Universal Protein Resource (UniProt) Consortium. UniProt presents three database layers: the UniProt Archive, the UniProt Knowledgebase (UniProtKB), and the UniProt Reference Clusters. The UniProtKB consists of two sections: UniProtKB/Swiss-Prot (fully manually curated entries) and UniProtKB/TrEMBL (automated annotation, classification and extensive... Schneider, Michel; Bairoch, Amos; Wu, Cathy H.; Apweiler, Rolf http://biblioteca.universia.net/ficha.do?id=5082359 Over recent years, a number of initiatives have proposed standard reporting guidelines for functional genomics experiments. Associated with these are data models that may be used as the basis of the design of software tools that store and transmit experiment data in standard formats. Central to the success of such data handling tools is their usability. Successful data handling tools are expected to yield benefits in time saving and in quality assurance. Here, we describe the collection of da... Jenkins, Helen; Johnson, Helen; Kular, Baldeep; Wang, Trevor; Hardy, Nigel http://biblioteca.universia.net/ficha.do?id=5082360 Minorsky, Peter V. http://biblioteca.universia.net/ficha.do?id=5082361 The development of complex eukaryotic organisms can be viewed as the selective expression of distinct fractions of the genome in different organs or tissue types in response to developmental and environmental cues. Here, we generated a genome expression atlas of 18 organ or tissue types representing the life cycle of Arabidopsis (Arabidopsis thaliana). We showed that each organ or tissue type had a defining genome expression pattern and that the degree to which organs share expression profile... Ma, Ligeng; Sun, Ning; Liu, Xigang; Jiao, Yuling; Zhao, Hongyu; Deng, Xing Wang http://biblioteca.universia.net/ficha.do?id=5082362 The covalent modification of eukaryotic DNA by methylation of the 5? carbon of cytosine residues is frequently associated with transcriptional silencing. In mammals, a potential mechanism for transducing DNA methylation patterns into altered transcription levels occurs via binding of methyl-CpG-binding domain (MBD) proteins. Mammalian MBD-containing proteins bind specifically to methylated DNA and recruit chromatin-modifying complexes containing histone deacetylase activities. Sequence simila... Springer, Nathan M.; Kaeppler, Shawn M. http://biblioteca.universia.net/ficha.do?id=5082363 To better understand the molecular basis of the defense response against the rice blast fungus (Magnaporthe grisea), a large-scale expressed sequence tag (EST) sequencing approach was used to identify genes involved in the early infection stages in rice (Oryza sativa). Six cDNA libraries were constructed using infected leaf tissues harvested from 6 conditions: resistant, partially resistant, and susceptible reactions at both 6 and 24 h after inoculation. Two additional libraries were construc... Jantasuriyarat, Chatchawan; Gowda, Malali; Haller, Karl; Hatfield, Jamie; Lu, Guodong; Stahlberg, Eric; Zhou, Bo; Li, Huameng; Kim, HyRan; Yu, Yeisoo; Dean, Ralph A.; Wing, Rod A.; Soderlund, Carol; Wang, Guo-Liang http://biblioteca.universia.net/ficha.do?id=5082364 Many clone-based physical maps have been built with the FingerPrinted Contig (FPC) software, which is written in C and runs locally for fast and flexible analysis. If the maps were viewable only from FPC, they would not be as useful to the whole community since FPC must be installed on the user machine and the database downloaded. Hence, we have created a set of Web tools so users can easily view the FPC data and perform salient queries with standard browsers. This set includes the following ... Pampanwar, Vishal; Engler, Friedrich; Hatfield, James; Blundy, Steve; Gupta, Gaurav; Soderlund, Carol http://biblioteca.universia.net/ficha.do?id=5082365 Amtmann, Anna; Bohnert, Hans J.; Bressan, Ray A. http://biblioteca.universia.net/ficha.do?id=5082366 UDP-d-glucuronate decarboxylase (EC 4.1.1.35) catalyzes the synthesis of UDP-d-xylose from UDP-d-glucuronate in an essentially irreversible reaction that is believed to commit glycosyl residues to heteroxylan and xyloglucan biosynthesis. Four members of the barley (Hordeum vulgare) UDP-d-glucuronate decarboxylase gene family, designated HvUXS1 to HvUXS4, have been cloned and characterized. Barley HvUXS1 appears to be a cytosolic enzyme, while the others are predicted to be membrane-bound prot... Zhang, Qisen; Shirley, Neil; Lahnstein, Jelle; Fincher, Geoffrey B. http://biblioteca.universia.net/ficha.do?id=5082367 Polyamine (PA) titers and biosynthesis follow a basipetal decrease along the tobacco (Nicotiana tabacum) plant axis, and they also correlate negatively with cell size. On the contrary, the titers of arginine (Arg), ornithine (Orn), and arginase activity increase with age. The free (soluble)/total-PA ratios gradually increase basipetally, but the soluble conjugated decrease, with spermidine (Spd) mainly to determine these changes. The shoot apical meristems are the main site of Spd and spermin... Paschalidis, Konstantinos A.; Roubelakis-Angelakis, Kalliopi A. http://biblioteca.universia.net/ficha.do?id=5082368 The lipid-rich, sticky exudate covering the stigma of solanaceous species such as tobacco (Nicotiana tabacum) and petunia (Petunia hybrida) contains several proteins, of which only some have been characterized to date. Proteome analysis of the stigmatic exudate in both species revealed the presence of a cysteine-rich, slightly acidic 12-kD protein called stigma-specific protein 1 (STIG1). In both tobacco and petunia, Stig1 is highly expressed at the mRNA level in very young and developing flo... Verhoeven, Tamara; Feron, Richard; Wolters-Arts, Mieke; Edqvist, Johan; Gerats, Tom; Derksen, Jan; Mariani, Celestina http://biblioteca.universia.net/ficha.do?id=5082369 The chloroplast contains many iron (Fe)-sulfur (S) proteins for the processes of photosynthesis and nitrogen and S assimilation. Although isolated chloroplasts are known to be able to synthesize their own Fe-S clusters, the machinery involved is largely unknown. Recently, a cysteine desulfurase was reported in Arabidopsis (Arabidopsis thaliana; AtCpNifS) that likely provides the S for Fe-S clusters. Here, we describe an additional putative component of the plastid Fe-S cluster assembly machin... Abdel-Ghany, Salah E.; Ye, Hong; Garifullina, Gulnara F.; Zhang, Lihong; Pilon-Smits, Elizabeth A.H.; Pilon, Marinus http://biblioteca.universia.net/ficha.do?id=5082370 Three key benzylisoquinoline alkaloid biosynthetic enzymes, (S)-N-methylcoclaurine-3?-hydroxylase (CYP80B1), berberine bridge enzyme (BBE), and codeinone reductase (COR), were localized in cultured opium poppy (Papaver somniferum) cells by sucrose density gradient fractionation and immunogold labeling. CYP80B1 catalyzes the second to last step in the formation of (S)-reticuline, the last common intermediate in sanguinarine and morphine biosynthesis. BBE converts (S)-reticuline to (S)-scouleri... Alcantara, Joenel; Bird, David A.; Franceschi, Vincent R.; Facchini, Peter J.