Phosphorylation of myosin A regulates gliding motility and is essential for Plasmodium transmission.

Autor: Ripp J; Integrative Parasitology, Center for Infectious Diseases, University of Heidelberg Medical School, Heidelberg, Germany., Smyrnakou X; Integrative Parasitology, Center for Infectious Diseases, University of Heidelberg Medical School, Heidelberg, Germany., Neuhoff MT; Integrative Parasitology, Center for Infectious Diseases, University of Heidelberg Medical School, Heidelberg, Germany., Hentzschel F; Integrative Parasitology, Center for Infectious Diseases, University of Heidelberg Medical School, Heidelberg, Germany.; German Center for Infection Research, DZIF Partner Site Heidelberg, Heidelberg, Germany., Frischknecht F; Integrative Parasitology, Center for Infectious Diseases, University of Heidelberg Medical School, Heidelberg, Germany.; German Center for Infection Research, DZIF Partner Site Heidelberg, Heidelberg, Germany.
Jazyk: angličtina
Zdroj: EMBO reports [EMBO Rep] 2022 Jul 05; Vol. 23 (7), pp. e54857. Date of Electronic Publication: 2022 May 04.
DOI: 10.15252/embr.202254857
Abstrakt: Malaria-causing parasites rely on an actin-myosin-based motor for the invasion of different host cells and tissue traversal in mosquitoes and vertebrates. The unusual myosin A of Plasmodium spp. has a unique N-terminal extension, which is important for red blood cell invasion by P. falciparum merozoites in vitro and harbors a phosphorylation site at serine 19. Here, using the rodent-infecting P. berghei we show that phosphorylation of serine 19 increases ookinete but not sporozoite motility and is essential for efficient transmission of Plasmodium by mosquitoes as S19A mutants show defects in mosquito salivary gland entry. S19A along with E6R mutations slow ookinetes and salivary gland sporozoites in both 2D and 3D environments. In contrast to data from purified proteins, both E6R and S19D mutations lower force generation by sporozoites. Our data show that the phosphorylation cycle of S19 influences parasite migration and force generation and is critical for optimal migration of parasites during transmission from and to the mosquito.
(©2022 The Authors. Published under the terms of the CC BY NC ND 4.0 license.)
Databáze: MEDLINE
Externí odkaz: