Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Genetics and Molecular Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000300006 |
Resumo: | Evolution of metazoan 5S rRNA sequences was analyzed through base composition and types, location and frequency of clustered bases. Characters from sequences of protostomes did not show regular trends as compared with paleontology dating or organism complexity. Trends of increasing G and C, stronger in G clusters, and decreasing A and U, were detected in deuterostomes, in parallel with evolution of complexity. The multifunctional domain 71-104 was highlighted among conserved stretches. Clusters of C were typical of helices. Those of G were longer, extending from helices into loops or related to bulges, which is suggestive of functional significance. Deuterostomian trends were installed early in the lineage and reached full development in aquatic organisms, not increasing further after reptiles. It can be suggested that ribosomal RNA structures participated in deuterostomian high regulatory complexity, either specifically or as part of the widespread processes of chromosomal regionalization. |
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Genetics and Molecular Biology |
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Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clustersribosomal RNAevolutionrepetitive sitesdeuterostomesprotostomesEvolution of metazoan 5S rRNA sequences was analyzed through base composition and types, location and frequency of clustered bases. Characters from sequences of protostomes did not show regular trends as compared with paleontology dating or organism complexity. Trends of increasing G and C, stronger in G clusters, and decreasing A and U, were detected in deuterostomes, in parallel with evolution of complexity. The multifunctional domain 71-104 was highlighted among conserved stretches. Clusters of C were typical of helices. Those of G were longer, extending from helices into loops or related to bulges, which is suggestive of functional significance. Deuterostomian trends were installed early in the lineage and reached full development in aquatic organisms, not increasing further after reptiles. It can be suggested that ribosomal RNA structures participated in deuterostomian high regulatory complexity, either specifically or as part of the widespread processes of chromosomal regionalization.Sociedade Brasileira de Genética2002-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000300006Genetics and Molecular Biology v.25 n.3 2002reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572002000300006info:eu-repo/semantics/openAccessSubacius,Sandra Maria RodriguesGuimarães,Romeu Cardosoeng2002-12-06T00:00:00Zoai:scielo:S1415-47572002000300006Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2002-12-06T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false |
dc.title.none.fl_str_mv |
Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters |
title |
Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters |
spellingShingle |
Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters Subacius,Sandra Maria Rodrigues ribosomal RNA evolution repetitive sites deuterostomes protostomes |
title_short |
Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters |
title_full |
Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters |
title_fullStr |
Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters |
title_full_unstemmed |
Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters |
title_sort |
Trends in evolution of 5S rRNA of deuterostomes: bases and homogeneous clusters |
author |
Subacius,Sandra Maria Rodrigues |
author_facet |
Subacius,Sandra Maria Rodrigues Guimarães,Romeu Cardoso |
author_role |
author |
author2 |
Guimarães,Romeu Cardoso |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Subacius,Sandra Maria Rodrigues Guimarães,Romeu Cardoso |
dc.subject.por.fl_str_mv |
ribosomal RNA evolution repetitive sites deuterostomes protostomes |
topic |
ribosomal RNA evolution repetitive sites deuterostomes protostomes |
description |
Evolution of metazoan 5S rRNA sequences was analyzed through base composition and types, location and frequency of clustered bases. Characters from sequences of protostomes did not show regular trends as compared with paleontology dating or organism complexity. Trends of increasing G and C, stronger in G clusters, and decreasing A and U, were detected in deuterostomes, in parallel with evolution of complexity. The multifunctional domain 71-104 was highlighted among conserved stretches. Clusters of C were typical of helices. Those of G were longer, extending from helices into loops or related to bulges, which is suggestive of functional significance. Deuterostomian trends were installed early in the lineage and reached full development in aquatic organisms, not increasing further after reptiles. It can be suggested that ribosomal RNA structures participated in deuterostomian high regulatory complexity, either specifically or as part of the widespread processes of chromosomal regionalization. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000300006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000300006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-47572002000300006 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
dc.source.none.fl_str_mv |
Genetics and Molecular Biology v.25 n.3 2002 reponame:Genetics and Molecular Biology instname:Sociedade Brasileira de Genética (SBG) instacron:SBG |
instname_str |
Sociedade Brasileira de Genética (SBG) |
instacron_str |
SBG |
institution |
SBG |
reponame_str |
Genetics and Molecular Biology |
collection |
Genetics and Molecular Biology |
repository.name.fl_str_mv |
Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG) |
repository.mail.fl_str_mv |
||editor@gmb.org.br |
_version_ |
1752122378521935872 |