RMgmDB - Rodent Malaria genetically modified Parasites


Malaria parasiteP. berghei
Genetic modification not successful
DisruptedGene model (rodent): PBANKA_1142900; Gene model (P.falciparum): PF3D7_1367000; Gene product: suppressor of kinetochore protein 1, putative (SKP1)
PhenotypeNo phenotype has been described
Last modified: 29 March 2023, 15:50
Successful modificationThe gene/parasite could not be changed/generated by the genetic modification.
The following genetic modifications were attempted Gene disruption
Number of attempts to introduce the genetic modification 4
Reference (PubMed-PMID number) Reference 1 (PMID number) : 36898988
Parent parasite used to introduce the genetic modification
Rodent Malaria ParasiteP. berghei
Parent strain/lineP. berghei ANKA
Name parent line/clone P. berghei ANKA 2.34
Other information parent lineP. berghei ANKA 2.34 is a cloned, gametocyte producer line of the ANKA strain (PubMed: PMID: 15137943).
Attempts to generate the mutant parasite were performed by
Name PI/ResearcherRashpa R, Brochet M
Name Group/DepartmentFaculty of Medicine, Department of Microbiology and Molecular Medicine
Name InstituteUniversity of Geneva

  Disrupted: Mutant parasite with a disrupted gene
Details of the target gene
Gene Model of Rodent Parasite PBANKA_1142900
Gene Model P. falciparum ortholog PF3D7_1367000
Gene productsuppressor of kinetochore protein 1, putative
Gene product: Alternative nameSKP1
Details of the genetic modification
Inducable system usedNo
Additional remarks inducable system
Type of plasmid/construct used(Linear) plasmid double cross-over
PlasmoGEM (Sanger) construct/vector usedYes
Name of PlasmoGEM construct/vector-
Modified PlasmoGEM construct/vector usedYes
See "Additional remarks genetic modification"
Plasmid/construct map
Plasmid/construct sequence
Restriction sites to linearize plasmid
Partial or complete disruption of the geneComplete
Additional remarks partial/complete disruption
Selectable marker used to select the mutant parasitehdhfr/yfcu
Promoter of the selectable markereef1a
Selection (positive) procedurepyrimethamine
Selection (negative) procedureNo
Additional remarks genetic modificationThe unsuccessful attempts to disrupt this gene indicate an essential function during asexual blood stage growth

3xHA, KO (disruption) or AID/HA targeting vectors were generated using phage recombineering in Escherichia coli TSA strain with PlasmoGEM vectors (https://plasmogem.umu.se/pbgem/). For final targeting vectors not available in the PlasmoGEM repository, generation of knockout and tagging constructs were performed using sequential recombineering and gateway steps. For each gene of interest (goi), the Zeocin-resistance/Phe-sensitivity cassette was introduced using oligonucleotides goi HA-F x goi HA-R and goi KO-F x goi KO-R for 3xHA, AID/HA tagging and KO targeting vectors, respectively. Insertion of the GWcassette following the gateway reaction was confirmed using primer pairs GW1 x goiQCR1 and GW2 x goiQCR2.The modified library inserts were then released from the plasmid backbone using NotI. The AID/HA targeting vectors were transfected into the 615 parasite line, while the KO/GD and triple HA targeting vectors were transfected into the 2.34 line unless otherwise specified.
Additional remarks selection procedure
Primer information: Primers used for amplification of the target sequences  Click to view information
Primer information: Primers used for amplification of the target sequences  Click to hide information
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