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Details of the target gene |
Gene Model of Rodent Parasite |
PBANKA_0203100
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Gene Model P. falciparum ortholog |
PF3D7_0110600
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Gene product | phosphatidylinositol-4-phosphate 5-kinase |
Gene product: Alternative name | PIP5K |
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Details of the genetic modification |
Inducable system used | No |
Additional remarks inducable system |
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Type of plasmid/construct used | Plasmid double cross-over |
PlasmoGEM (Sanger) construct/vector used | Yes |
Name of PlasmoGEM construct/vector | - |
Modified PlasmoGEM construct/vector used | No
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Plasmid/construct map |
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Plasmid/construct sequence |
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Restriction sites to linearize plasmid |
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Partial or complete disruption of the gene | Unknown |
Additional remarks partial/complete disruption |
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Selectable marker used to select the mutant parasite | hdhfr/yfcu |
Promoter of the selectable marker | eef1a |
Selection (positive) procedure | pyrimethamine |
Selection (negative) procedure | No |
Additional remarks genetic modification | No details are provided for the PlasmoGEM vector used.
Enzymes in the inositol phospholipid biosynthetic pathway. Phosphorylated phosphatidylinositol lipids have important roles in vesicle trafficking and as a source of secondary messengers in signal transduction. Their biosynthesis from phosphatidyl-1D-myo-inositol (PI) is mediated by lipid kinases. The P. berghei genome encodes four putative lipid kinases to convert PI first to phosphatidylinositol 4-phosphate (PI4P) and then to phosphatidylinositol (4,5)- bisphosphate (PI(4,5)P2). Hydrolysis of the latter by a PI-specific phospholipase C (PI-PLC) gives rise to the secondary messenger inositol (1,4,5)-trisphosphate (IP3), which plays an important role in P. berghei gametocytes, where it is responsible for the mobilisation of Ca2+ from internal stores, leading to activation and gametogenesis.
To test whether the PKG-dependent phosphorylation of enzymes associated with phosphoinositide metabolism has a direct role in ookinete motility, an experimental genetics approach was used to infer the role of putative PI kinases. Both the putative PI4K (PBANKA_110940) and the putative PIP5K (PBANKA_020310) were unable to be genetically disrupted (unpublished data), suggesting these genes may be essential for asexual growth, although both loci could be modified. |
Additional remarks selection procedure | |
Primer information: Primers used for amplification of the target sequences
Primer information: Primers used for amplification of the target sequences
Sequence Primer 1 | |
Additional information primer 1 | |
Sequence Primer 2 | |
Additional information primer 2 | |
Sequence Primer 3 | |
Additional information primer 3 | |
Sequence Primer 4 | |
Additional information primer 4 | |
Sequence Primer 5 | |
Additional information primer 5 | |
Sequence Primer 6 | |
Additional information primer 6 | |
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