RMgmDB - Rodent Malaria genetically modified Parasites

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Summary

RMgm-1580
Malaria parasiteP. berghei
Genotype
Genetic modification not successful
DisruptedGene model (rodent): PBANKA_0603200; Gene model (P.falciparum): PF3D7_1204300; Gene product: eukaryotic translation initiation factor 5A (EIF5A'EIF-5A)
PhenotypeNo phenotype has been described
Last modified: 19 August 2016, 16:13
  *RMgm-1580
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 2
Reference (PubMed-PMID number) Reference 1 (PMID number) : 27516964
Parent parasite used to introduce the genetic modification
Rodent Malaria ParasiteP. berghei
Parent strain/lineP. berghei ANKA
Name parent line/clone P. berghei ANKA cl15cy1
Other information parent lineA reference wild type clone from the ANKA strain of P. berghei (PubMed: PMID: 17406255).
Attempts to generate the mutant parasite were performed by
Name PI/ResearcherKersting D; Kaiser A
Name Group/DepartmentInstitute for Pharmacogenetics
Name InstituteResearch Centre University Duisburg-Essen
CityDuisburg-Essen
CountryGermany

  Disrupted: Mutant parasite with a disrupted gene
Details of the target gene
Gene Model of Rodent Parasite PBANKA_0603200
Gene Model P. falciparum ortholog PF3D7_1204300
Gene producteukaryotic translation initiation factor 5A
Gene product: Alternative nameEIF5A'EIF-5A
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 parasitetgdhfr
Promoter of the selectable markerpbdhfr
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/multiplication.

The novel amino acid hypusine is a post-translational modification that only appears in a single small acidic protein in the eukaryotic initiation factor 5A (EIF-5A). Within two subsequent enzymatic steps, a specific lysine residue is modified by the enzymes deoxyhypusine synthase (DHS, EC 2.5.1.46) and deoxyhypusine hydroxylase (DOHH, EC 1.14.99.29). Hypusination is strictly linked to the polyamine pathway. While in the first step, under DHS catalysis, an aminobutyl moiety from the triamine spermidine is transferred to the e-amino group of a specific lysine in eIF-5A (Lys 50 in EIF-5A), DOHH completes hypusine biosynthesis by hydroxylation of the side chain in 2-position and thus activates eIF-5A in the second step. EIF-5A has a central role in translation elongation facilitating peptide bound formation during translation of polyproline-containing proteins. Findings of a genome-wide analysis of 35 representative organisms from six kingdoms of life, that is, archaebacteria, eubacteria, protista, fungi, plantae, and animalia showed that EIF-5A-dependent expression is strongly associated with specific biological processes like actin/cytoskeletal associated functions, RNA splicing/turnover, DNA binding/transcription, and cell signaling.
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