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Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
14/12/2007 |
Data da última atualização: |
14/12/2007 |
Autoria: |
SOUZA, R. S.; CHAVES, L. H. G.; FERNANDES, J. Y. D. |
Título: |
Isotermas de Langmuir e de Freundlich na descrição da adsorção de zinco em solos do Estado da Paraíba. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
Revista Brasileira de Ciências Agrárias, v.2, n.2, p.123-127, abr./jun., 2007 |
Idioma: |
Português |
Categoria do assunto: |
-- |
Marc: |
LEADER 00461naa a2200133 a 4500 001 1276197 005 2007-12-14 008 2007 bl uuuu u00u1 u #d 100 1 $aSOUZA, R. S. 245 $aIsotermas de Langmuir e de Freundlich na descrição da adsorção de zinco em solos do Estado da Paraíba. 260 $c2007 700 1 $aCHAVES, L. H. G. 700 1 $aFERNANDES, J. Y. D. 773 $tRevista Brasileira de Ciências Agrárias$gv.2, n.2, p.123-127, abr./jun., 2007
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Registro Completo
Biblioteca(s): |
Embrapa Agricultura Digital. |
Data corrente: |
10/02/2014 |
Data da última atualização: |
08/01/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
MENDES, T. A. O.; LOBO, F. P.; RODRIGUES, T. S.; RODRIGUES-LUIZ, G. F.; ROCHA, W. D. da; FUJIWARA, R. T.; TEIXEIRA, S. M. R.; BARTHOLOMEU, D. C. |
Afiliação: |
UFMG; FRANCISCO PEREIRA LOBO, CNPTIA; Centro Federal de Educação Tecnológica de Minas Gerais; UFMG; UFPR; UFMG; UFMG; UFMG. |
Título: |
Repeat-enriched proteins are related to host cell invasion and immune evasion in parasitic protozoa. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Molecular Biology and Evolution, Chicago, v. 30, n. 4, p. 951-963, 2013. |
DOI: |
10.1093/molbev/mst001 |
Idioma: |
Inglês |
Conteúdo: |
Proteins containing repetitive amino acid domains are widespread in all life forms. In parasitic organisms, proteins containing repeats play important roles such as cell adhesion and invasion and immune evasion. Therefore, extracellular and intracellular parasites are expected to be under different selective pressures regarding the repetitive content in their genomes. Here, we investigated whether there is a bias in the repetitive content found in the predicted proteomes of 6 exclusively extracellular and 17 obligate intracellular protozoan parasites, as well as 4 free-living protists. We also attempted to correlate the results with the distinct ecological niches they occupy and with distinct protein functions. We found that intracellular parasites have higher repetitive content in their proteomes than do extracellular parasites and free-living protists. In intracellular parasites, these repetitive proteins are located mainly at the parasite surface or are secreted and are enriched in amino acids known to be part of N- and O-glycosylation sites. Furthermore, in intracellular parasites, the developmental stages that are able to invade host cells express a higher proportion of proteins with perfect repeats relative to other life cycle stages, and these proteins have molecular functions associated with cell invasion. In contrast, in extracellular parasites, degenerate repetitive motifs are enriched in proteins that are likely to play roles in evading host immune response. Altogether, our results support the hypothesis that both the ability to invade host cells and to escape the host immune response may have shaped the expansion and maintenance of perfect and degenerate repeats in the genomes of intra- and extracellular parasites. MenosProteins containing repetitive amino acid domains are widespread in all life forms. In parasitic organisms, proteins containing repeats play important roles such as cell adhesion and invasion and immune evasion. Therefore, extracellular and intracellular parasites are expected to be under different selective pressures regarding the repetitive content in their genomes. Here, we investigated whether there is a bias in the repetitive content found in the predicted proteomes of 6 exclusively extracellular and 17 obligate intracellular protozoan parasites, as well as 4 free-living protists. We also attempted to correlate the results with the distinct ecological niches they occupy and with distinct protein functions. We found that intracellular parasites have higher repetitive content in their proteomes than do extracellular parasites and free-living protists. In intracellular parasites, these repetitive proteins are located mainly at the parasite surface or are secreted and are enriched in amino acids known to be part of N- and O-glycosylation sites. Furthermore, in intracellular parasites, the developmental stages that are able to invade host cells express a higher proportion of proteins with perfect repeats relative to other life cycle stages, and these proteins have molecular functions associated with cell invasion. In contrast, in extracellular parasites, degenerate repetitive motifs are enriched in proteins that are likely to play roles in evading host immune response. Altog... Mostrar Tudo |
Palavras-Chave: |
Evasão imune; Evolução genômica; Invasão celular; Parasitas; Proteínas. |
Thesaurus NAL: |
Cell invasion; Evolution; Immune evasion; Parasites; Proteins; Protozoa. |
Categoria do assunto: |
S Ciências Biológicas |
Marc: |
LEADER 02770naa a2200349 a 4500 001 1979314 005 2020-01-08 008 2013 bl uuuu u00u1 u #d 024 7 $a10.1093/molbev/mst001$2DOI 100 1 $aMENDES, T. A. O. 245 $aRepeat-enriched proteins are related to host cell invasion and immune evasion in parasitic protozoa.$h[electronic resource] 260 $c2013 520 $aProteins containing repetitive amino acid domains are widespread in all life forms. In parasitic organisms, proteins containing repeats play important roles such as cell adhesion and invasion and immune evasion. Therefore, extracellular and intracellular parasites are expected to be under different selective pressures regarding the repetitive content in their genomes. Here, we investigated whether there is a bias in the repetitive content found in the predicted proteomes of 6 exclusively extracellular and 17 obligate intracellular protozoan parasites, as well as 4 free-living protists. We also attempted to correlate the results with the distinct ecological niches they occupy and with distinct protein functions. We found that intracellular parasites have higher repetitive content in their proteomes than do extracellular parasites and free-living protists. In intracellular parasites, these repetitive proteins are located mainly at the parasite surface or are secreted and are enriched in amino acids known to be part of N- and O-glycosylation sites. Furthermore, in intracellular parasites, the developmental stages that are able to invade host cells express a higher proportion of proteins with perfect repeats relative to other life cycle stages, and these proteins have molecular functions associated with cell invasion. In contrast, in extracellular parasites, degenerate repetitive motifs are enriched in proteins that are likely to play roles in evading host immune response. Altogether, our results support the hypothesis that both the ability to invade host cells and to escape the host immune response may have shaped the expansion and maintenance of perfect and degenerate repeats in the genomes of intra- and extracellular parasites. 650 $aCell invasion 650 $aEvolution 650 $aImmune evasion 650 $aParasites 650 $aProteins 650 $aProtozoa 653 $aEvasão imune 653 $aEvolução genômica 653 $aInvasão celular 653 $aParasitas 653 $aProteínas 700 1 $aLOBO, F. P. 700 1 $aRODRIGUES, T. S. 700 1 $aRODRIGUES-LUIZ, G. F. 700 1 $aROCHA, W. D. da 700 1 $aFUJIWARA, R. T. 700 1 $aTEIXEIRA, S. M. R. 700 1 $aBARTHOLOMEU, D. C. 773 $tMolecular Biology and Evolution, Chicago$gv. 30, n. 4, p. 951-963, 2013.
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