Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes)
Autor(a) principal: | |
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Data de Publicação: | 1998 |
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=S1415-47571998000400016 |
Resumo: | A recent locus duplication hypothesis for sMDH-B* was proposed to explain the complex electrophoretic pattern of six bands detected for the soluble form of malate dehydrogenase (MDH, EC 1.1.1.37) in 84% of the Geophagus brasiliensis (Cichlidae, Perciformes) analyzed (AB1B2 individuals). Klebe's serial dilutions were carried out in skeletal muscle extracts. B1 and B2 subunits had the same visual end-points, reflecting a nondivergent pattern for these B-duplicated genes. Since there is no evidence of polyploidy in the Cichlidae family, MDH-B* loci must have evolved from regional gene duplication. Tissue specificities, thermostability and kinetic tests resulted in similar responses from both B-isoforms, in both sMDH phenotypes, suggesting that these more recently duplicated loci underwent the same regulatory gene action. Similar results obtained with the two sMDH phenotypes did not show any indication of a six-banded specimen adaptive advantage in subtropical regions. |
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Genetics and Molecular Biology |
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Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes)A recent locus duplication hypothesis for sMDH-B* was proposed to explain the complex electrophoretic pattern of six bands detected for the soluble form of malate dehydrogenase (MDH, EC 1.1.1.37) in 84% of the Geophagus brasiliensis (Cichlidae, Perciformes) analyzed (AB1B2 individuals). Klebe's serial dilutions were carried out in skeletal muscle extracts. B1 and B2 subunits had the same visual end-points, reflecting a nondivergent pattern for these B-duplicated genes. Since there is no evidence of polyploidy in the Cichlidae family, MDH-B* loci must have evolved from regional gene duplication. Tissue specificities, thermostability and kinetic tests resulted in similar responses from both B-isoforms, in both sMDH phenotypes, suggesting that these more recently duplicated loci underwent the same regulatory gene action. Similar results obtained with the two sMDH phenotypes did not show any indication of a six-banded specimen adaptive advantage in subtropical regions.Sociedade Brasileira de Genética1998-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571998000400016Genetics and Molecular Biology v.21 n.4 1998reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47571998000400016info:eu-repo/semantics/openAccessAquino-Silva,Maria Regina deSchwantes,Maria Luiza B.Schwantes,Arno Rudieng1999-03-01T00:00:00Zoai:scielo:S1415-47571998000400016Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:1999-03-01T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false |
dc.title.none.fl_str_mv |
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) |
title |
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) |
spellingShingle |
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) Aquino-Silva,Maria Regina de |
title_short |
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) |
title_full |
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) |
title_fullStr |
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) |
title_full_unstemmed |
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) |
title_sort |
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) |
author |
Aquino-Silva,Maria Regina de |
author_facet |
Aquino-Silva,Maria Regina de Schwantes,Maria Luiza B. Schwantes,Arno Rudi |
author_role |
author |
author2 |
Schwantes,Maria Luiza B. Schwantes,Arno Rudi |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Aquino-Silva,Maria Regina de Schwantes,Maria Luiza B. Schwantes,Arno Rudi |
description |
A recent locus duplication hypothesis for sMDH-B* was proposed to explain the complex electrophoretic pattern of six bands detected for the soluble form of malate dehydrogenase (MDH, EC 1.1.1.37) in 84% of the Geophagus brasiliensis (Cichlidae, Perciformes) analyzed (AB1B2 individuals). Klebe's serial dilutions were carried out in skeletal muscle extracts. B1 and B2 subunits had the same visual end-points, reflecting a nondivergent pattern for these B-duplicated genes. Since there is no evidence of polyploidy in the Cichlidae family, MDH-B* loci must have evolved from regional gene duplication. Tissue specificities, thermostability and kinetic tests resulted in similar responses from both B-isoforms, in both sMDH phenotypes, suggesting that these more recently duplicated loci underwent the same regulatory gene action. Similar results obtained with the two sMDH phenotypes did not show any indication of a six-banded specimen adaptive advantage in subtropical regions. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-12-01 |
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=S1415-47571998000400016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571998000400016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-47571998000400016 |
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.21 n.4 1998 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_ |
1752122377051832320 |