RMgmDB - Rodent Malaria genetically modified Parasites

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Summary

RMgm-4436
Malaria parasiteP. berghei
Genotype
DisruptedGene model (rodent): PBANKA_1315100; Gene model (P.falciparum): PF3D7_1451400; Gene product: transcriptional regulatory protein sir2b (SIR2B)
Transgene
Transgene not Plasmodium: GFP (gfp-mu3)
Promoter: Gene model: PBANKA_1133300; Gene model (P.falciparum): PF3D7_1357100; Gene product: elongation factor 1-alpha (eef1a)
3'UTR: Gene model: PBANKA_0719300; Gene product: bifunctional dihydrofolate reductase-thymidylate synthase, putative (dhfr/ts)
Replacement locus: Gene model: PBANKA_0306000; Gene product: 6-cysteine protein (230p)
PhenotypeNo phenotype has been described
Last modified: 3 May 2021, 12:01
  *RMgm-4436
Successful modificationThe parasite was generated by the genetic modification
The mutant contains the following genetic modification(s) Gene disruption, Introduction of a transgene
Reference (PubMed-PMID number) Not published (yet)
MR4 number
Parent parasite used to introduce the genetic modification
Rodent Malaria ParasiteP. berghei
Parent strain/lineP. berghei ANKA
Name parent line/clone P. berghei ANKA 507cl1 (RMgm-7)
Other information parent lineP.berghei ANKA 507cl1 (RMgm-7) is a reference ANKA mutant line which expresses GFP under control of a constitutive promoter. This reference line does not contain a drug-selectable marker (PubMed: PMID: 16242190).
The mutant parasite was generated by
Name PI/ResearcherReliga AA, Janse CJ, Waters AP
Name Group/DepartmentLeiden Malaria Research Group
Name InstituteLeiden University Medical Center
CityLeiden
CountryThe Netherlands
Name of the mutant parasite
RMgm numberRMgm-4436
Principal name1079cl1
Alternative name
Standardized name
Is the mutant parasite cloned after genetic modificationYes
Phenotype
Asexual blood stageNot different from wild type
Gametocyte/GameteNot different from wild type
Fertilization and ookineteNot different from wild type
OocystNot different from wild type
SporozoiteNot different from wild type
Liver stageNot different from wild type
Additional remarks phenotype

Mutant/mutation
The mutant lacks expression of SIR2b

Protein (function)

Phenotype
Normal blood stage development and gametocyte production. Normal gamete production, fertilisation and ookinete production. Normal oocyst and sporozoite production/formation. Normal liver infectivity as determined by parasite liver loads and prepatent period after intravenous injection of sporozoites in mice  

Additional information
The negative selectable marker (SM) hdfr/yfcu has been removed by negative selection of parasites of 1079cl1. Cloning after negative selection resulted in line 1079cl1m4cl1 that is SM free. These knock out parasites lacking sir2b have been used to make a double gene knockout lacking both sir2b and sir2a (see mutant RMgm-4437).

Other mutants
- a double gene knockout lacking both sir2b and sir2a (see mutant RMgm-4437).
- a mutant lacking sir 2a - RMgm-4435


  Disrupted: Mutant parasite with a disrupted gene
Details of the target gene
Gene Model of Rodent Parasite PBANKA_1315100
Gene Model P. falciparum ortholog PF3D7_1451400
Gene producttranscriptional regulatory protein sir2b
Gene product: Alternative nameSIR2B
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 usedNo
Modified PlasmoGEM construct/vector usedNo
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 negative selectable marker (SM) hdfr/yfcu has been removed by negative selection of parasites of 1079cl1. Cloning after negative selection resulted in line 1079cl1m4cl1 that is SM free. These parasites lacking sir2b have been used to make a double gene knockout lacking both sir2b and sir2a (see mutant RMgm-4437).
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

  Transgene: Mutant parasite expressing a transgene
Type and details of transgene
Is the transgene Plasmodium derived Transgene: not Plasmodium
Transgene nameGFP (gfp-mu3)
Details of the genetic modification
Inducable system usedNo
Additional remarks inducable system
Type of plasmid/construct(Linear) plasmid double cross-over
PlasmoGEM (Sanger) construct/vector usedNo
Modified PlasmoGEM construct/vector usedNo
Plasmid/construct map
Plasmid/construct sequence
Restriction sites to linearize plasmid
Selectable marker used to select the mutant parasitegfp (FACS)
Promoter of the selectable markereef1a
Selection (positive) procedureFACS (flowsorting)
Selection (negative) procedureNo
Additional remarks genetic modificationThe GFP gene (1 copy) has been inserted into the 230p locus (PBANKA_030600) by double cross-over integration.
Additional remarks selection procedure
Other details transgene
Promoter
Gene Model of Parasite PBANKA_1133300
Gene Model P. falciparum ortholog PF3D7_1357100
Gene productelongation factor 1-alpha
Gene product: Alternative nameeef1a
Primer information details of the primers used for amplification of the promoter sequence  Click to view information
Primer information details of the primers used for amplification of the promoter sequence  Click to hide information
Sequence Primer 1
Additional information primer 1
Sequence Primer 2
Additional information primer 2
3'-UTR
Gene Model of Parasite PBANKA_0719300
Gene productbifunctional dihydrofolate reductase-thymidylate synthase, putative
Gene product: Alternative namedhfr/ts
Primer information details of the primers used for amplification the 3'-UTR sequences  Click to view information
Primer information details of the primers used for amplification the 3'-UTR sequences  Click to hide information
Sequence Primer 1
Additional information primer 1
Sequence Primer 2
Additional information primer 2
Insertion/Replacement locus
Replacement / InsertionReplacement locus
Gene Model of Parasite PBANKA_0306000
Gene product6-cysteine protein
Gene product: Alternative name230p
Primer information details of the primers used for amplification of the target sequences  Click to view information
Primer information details of the 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