Molecular Marks
Mostrando 13-24 de 40 artigos, teses e dissertações.
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13. Citogenética molecular comparativa do DNAr 18S e 5S em piranhas (Serrasalminae, Characidae) Amazônia Central
Basic and molecular cytogenetic studies have been performed in 11 species of the subfamily Serrasalminae: Colossoma macropomum, Serrasalmus (S. altispinnis, S. elongatus, S. gouldingi, S. rhombeus, S. cf rhombeus, S. serrulatus and S. maculatus), Pygocentrus nattereri, Pristobrycon striolatus and Catoprion mento, collected along different sites in Central Am
Publicado em: 2007
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14. Genetic mapping by molecular markers with gametic and genotypic segregation distortion / Mapeamento genético utilizando marcadores moleculares com distorção de segregação gamética e genotípica
The development of the genetic maps based on DNA markers has been providing remarkable progresses to the genomics of plants and animals. The construction of a genetic map is performed, by using data from the segregant populations, that usually are backcrossing, F2 generation, RILs, double-haploids and others. A mendelian segregation pattern that is typical t
Publicado em: 2006
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15. Carioca bean breeding: evaluation of segregate population and use of molecular markers looking for resistance to pathogens / Melhoramento de feijão do tipo Carioca: avaliação de populações segregantes e uso de marcadores moleculares visando resistência a patógenos
In order to develop Carioca bean lines resistant to Colletotrichum lindemuthianum, Uromyces appendiculatus and Phaeoisariopsis griseola and showing desirable agronomic characteristics, it was done phenotypic and molecular characterization of 30 Carioca bean lines and also of Rudá-R which comes from a program of pyramiding of gene resistant to bean pathogen,
Publicado em: 2006
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16. Emancipatory molecular ruptures: the potentiality of social work practice / Rupturas moleculares emancipatórias: a potencionalidade da prática do serviço social
This study aims at analyzing the potentiality of the Social Work practice to produce emancipatory molecular ruptures in the context of Qualification Programs for Municipal Councilors of Social Assistance in the State of Paraná. Based on Gramscis theoretical fundamentals we argue the necessity of qualification and strengthening of these social subjects throu
Publicado em: 2005
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17. Marcadores moleculares na análise de espécies e composição populacional de peixes marinhos de recifes de corais da família Pomacanthidae (Perciformes).
The Brazilian coast extends over nearly 8,000km. Along the coastline, several marine ecosystems can be found and determine a rich ichthyofauna, regarding both diversity and number of species. The reef sites are characterized as the main reason for such abundance. As a paradox, genetic studies aiming to characterize the several species and populations from th
Publicado em: 2004
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18. Estudos de diversidade genética em estoques reprodutores de camarões Litopenaeus vannamei cultivados no Brasil.
The identification of genetic marks can provide information about the distribution of genetic variability in relation to populational size and parental generation, besides the discrimination of lines and/or individuals. Researches carried out in different shrimp species reared at captivity have demonstrated that a regular monitoring of the genetic variabilit
Publicado em: 2003
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19. Neuropsicologia da doença Huntington : fatores preditivos em familiares geneticamente positivos e assintomaticos
Huntington s disease (HD) is an inherited neurodegenerative disorder of midlife onset that produces characteristic, progressive abnormal movements, dementia, and psychiatric and personality abnormalities. The gene responsible of the HD is localized in the short arm of chromosome 4. In early 1993 the search for the genetic defect ended with the discovery that
Publicado em: 1998
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20. Testing ancient RNA–protein interactions
The past decade in molecular biology has seen remarkable advances in the study of the origin and early evolution of life. The mathematical tools for analyzing DNA and protein sequences, coupled with the availability of complete microbial genome sequences, provide insight almost as far back as the age of the nucleic acids themselves. Experimental evoluti
The National Academy of Sciences.
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21. Molecular basis for the discrimination of repressive methyl-lysine marks in histone H3 by Polycomb and HP1 chromodomains
On the histone H3 tail, Lys 9 and Lys 27 are both methylation sites associated with epigenetic repression, and reside within a highly related sequence motif ARKS. Here we show that the chromodomain proteins Polycomb (Pc) and HP1 (heterochromatin protein 1) are highly discriminatory for binding to these sites in vivo and in vitro. In Drosophila S2 cells,
Cold Spring Harbor Laboratory Press.
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22. Early chromatin unfolding by RUNX1: a molecular explanation for differential requirements during specification versus maintenance of the hematopoietic gene expression program
At the cellular level, development progresses through successive regulatory states, each characterized by their specific gene expression profile. However, the molecular mechanisms regulating first the priming and then maintenance of gene expression within one developmental pathway are essentially unknown. The hematopoietic system represents a powerful experi
American Society of Hematology.
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23. Definition of a physiologic aging autoantigen by using synthetic peptides of membrane protein band 3: localization of the active antigenic sites.
Senescent cell antigen (SCA), an aging antigen, is a protein that appears on old cells and marks them for removal by the immune system in mammals. It is derived from band 3, a ubiquitous membrane transport protein found in diverse cell types and tissues. We have used synthetic peptides to identify aging antigenic sites on band 3, using a competitive inhibiti
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24. Fucose-containing glycolipids are stage- and region-specific antigens in developing embryonic brain of rodents.
A monoclonal antibody (against 7A antigen), raised against a homogenate of embryonic rat forebrain, marks the distribution of region- and developmental stage-specific cell-surface antigens in the mammalian central nervous system. In the mouse, immunocytochemical staining revealed that 7A antigen is expressed almost exclusively in germinal layers of the cereb