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A Plasmodium calcium-dependent protein kinase controls zygote development and transmission by translationally activating repressed mRNAs
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2012 (English)In: Cell Host and Microbe, ISSN 1931-3128, E-ISSN 1934-6069, Vol. 12, no 1, p. 9-19Article in journal (Refereed) Published
Abstract [en]

Calcium-dependent protein kinases (CDPKs) play key regulatory roles in the life cycle of the malaria parasite, but in many cases their precise molecular functions are unknown. Using the rodent malaria parasite Plasmodium berghei, we show that CDPK1, which is known to be essential in the asexual blood stage of the parasite, is expressed in all life stages and is indispensable during the sexual mosquito life-cycle stages. Knockdown of CDPK1 in sexual stages resulted in developmentally arrested parasites and prevented mosquito transmission, and these effects were independent of the previously proposed function for CDPK1 in regulating parasite motility. In-depth translational and transcriptional profiling of arrested parasites revealed that CDPK1 translationally activates mRNA species in the developing zygote that in macrogametes remain repressed via their 3' and 5'UTRs. These findings indicate that CDPK1 is a multifunctional protein that translationally regulates mRNAs to ensure timely and stage-specific protein expression.

Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 12, no 1, p. 9-19
National Category
Cell and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-165867DOI: 10.1016/j.chom.2012.05.014ISI: 000306941900004OAI: oai:DiVA.org:umu-165867DiVA, id: diva2:1379122
Funder
Wellcome trust, WT098051Wellcome trust, 079643/Z/06/ZAvailable from: 2019-12-16 Created: 2019-12-16 Last updated: 2019-12-18Bibliographically approved

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Billker, Oliver
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