Functional equivalence of germ plasm organizers.

The proteins Oskar (Osk) in Drosophila and Bucky ball (Buc) in zebrafish act as germ plasm organizers. Both proteins recapitulate germ plasm activities but seem to be unique to their animal groups. Here, we discover that Osk and Buc show similar activities during germ cell specification. Drosophila...

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Main Authors: Pritesh Krishnakumar, Stephan Riemer, Roshan Perera, Thomas Lingner, Alexander Goloborodko, Hazem Khalifa, Franck Bontems, Felix Kaufholz, Mohamed A El-Brolosy, Roland Dosch
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2018-11-01
Series:PLoS Genetics
Online Access:http://europepmc.org/articles/PMC6219760?pdf=render
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author Pritesh Krishnakumar
Stephan Riemer
Roshan Perera
Thomas Lingner
Alexander Goloborodko
Hazem Khalifa
Franck Bontems
Felix Kaufholz
Mohamed A El-Brolosy
Roland Dosch
author_facet Pritesh Krishnakumar
Stephan Riemer
Roshan Perera
Thomas Lingner
Alexander Goloborodko
Hazem Khalifa
Franck Bontems
Felix Kaufholz
Mohamed A El-Brolosy
Roland Dosch
author_sort Pritesh Krishnakumar
collection DOAJ
description The proteins Oskar (Osk) in Drosophila and Bucky ball (Buc) in zebrafish act as germ plasm organizers. Both proteins recapitulate germ plasm activities but seem to be unique to their animal groups. Here, we discover that Osk and Buc show similar activities during germ cell specification. Drosophila Osk induces additional PGCs in zebrafish. Surprisingly, Osk and Buc do not show homologous protein motifs that would explain their related function. Nonetheless, we detect that both proteins contain stretches of intrinsically disordered regions (IDRs), which seem to be involved in protein aggregation. IDRs are known to rapidly change their sequence during evolution, which might obscure biochemical interaction motifs. Indeed, we show that Buc binds to the known Oskar interactors Vasa protein and nanos mRNA indicating conserved biochemical activities. These data provide a molecular framework for two proteins with unrelated sequence but with equivalent function to assemble a conserved core-complex nucleating germ plasm.
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spelling doaj.art-3c93f30403ef4a9585bb2b75ac7857bb2022-12-21T19:40:49ZengPublic Library of Science (PLoS)PLoS Genetics1553-73901553-74042018-11-011411e100769610.1371/journal.pgen.1007696Functional equivalence of germ plasm organizers.Pritesh KrishnakumarStephan RiemerRoshan PereraThomas LingnerAlexander GoloborodkoHazem KhalifaFranck BontemsFelix KaufholzMohamed A El-BrolosyRoland DoschThe proteins Oskar (Osk) in Drosophila and Bucky ball (Buc) in zebrafish act as germ plasm organizers. Both proteins recapitulate germ plasm activities but seem to be unique to their animal groups. Here, we discover that Osk and Buc show similar activities during germ cell specification. Drosophila Osk induces additional PGCs in zebrafish. Surprisingly, Osk and Buc do not show homologous protein motifs that would explain their related function. Nonetheless, we detect that both proteins contain stretches of intrinsically disordered regions (IDRs), which seem to be involved in protein aggregation. IDRs are known to rapidly change their sequence during evolution, which might obscure biochemical interaction motifs. Indeed, we show that Buc binds to the known Oskar interactors Vasa protein and nanos mRNA indicating conserved biochemical activities. These data provide a molecular framework for two proteins with unrelated sequence but with equivalent function to assemble a conserved core-complex nucleating germ plasm.http://europepmc.org/articles/PMC6219760?pdf=render
spellingShingle Pritesh Krishnakumar
Stephan Riemer
Roshan Perera
Thomas Lingner
Alexander Goloborodko
Hazem Khalifa
Franck Bontems
Felix Kaufholz
Mohamed A El-Brolosy
Roland Dosch
Functional equivalence of germ plasm organizers.
PLoS Genetics
title Functional equivalence of germ plasm organizers.
title_full Functional equivalence of germ plasm organizers.
title_fullStr Functional equivalence of germ plasm organizers.
title_full_unstemmed Functional equivalence of germ plasm organizers.
title_short Functional equivalence of germ plasm organizers.
title_sort functional equivalence of germ plasm organizers
url http://europepmc.org/articles/PMC6219760?pdf=render
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