About Gene List

PF3D7_1312400 (IF2a)

Genome location: Pf3D7_13_v3:521,022..524,485(+)

Genome classification: Core

Function and Localization

Product Description: translation initiation factor IF-2, putative

SignalP Peptide: N/A

# Transmembrane Domains: 0

EC Numbers: None

Curated GO (PlasmoDB):

Type GO Term Name
Component GO:0005739 mitochondrion
Function GO:0005525 GTP binding
Function GO:0003924 GTPase activity
Function GO:0003743 translation initiation factor activity
Process GO:0006413 translational initiation

Expression by stage (LR - Le Roch et al., and MCA - Malaria Cell Atlas):

Stage LR class MCA mean MCA prop. zeros
Sporozoite not expressed N/A N/A
Ring not expressed 0.03 0.98
Trophozoite not expressed 0.19 0.88
Schizont not expressed 0.04 0.97
Gametocyte possibly expressed 0.24 0.85

More info:

Resistome Mutations

Old (Pf3D7v3) Gene ID: PF3D7_1312400

Resistome Missense Mutations: None

Resistome Compounds with Missense Mutations: None

Resistome # Samples with Disruptive Mutations: 0 (0 missense, 0 "interesting" missense)

Essentiality (ABS)

Zhang Phenotype: Non - Mutable in CDS

MIS: 0.148 | MFS: -2.794 | #Insertions: 0

PlasmoGEM Phenotype: Essential (Pb ortholog: PBANKA_1410900)

  • Relative Growth Rate: 0.11 ± 0.08
  • Confidence: 6.55

RMgmDB ABS Phenotype: N/A

More info: PhenoPlasm Link

Binding Evidence

AlphaFill Uniprot ID: Q8IEJ7

"Best" AlphaFill ligand hit: PPV (pyrophosphate, Local RMSD=0.25) with 2PMD (Global RMSD=7.34)

No associated EC numbers

No evidence of orthology to BindingDB entries

Orthology Information

Ortholog Group (OrthoMCL): OG6_139502

No human ortholog(s)

Genetic Variation

MalariaGEN Pf7 (worldwide samples) # unique SNV/indels:

Homozygous genotype calls only

variant type common rare doubleton singleton
synonymous 8 63 33 75
disruptive 25 114 74 179
missense 21 106 71 160

Any inclusion in genotype call

variant type common rare doubleton singleton
synonymous 18 117 54 78
disruptive 53 252 126 272
missense 40 224 111 200

PlasmoDB Total SNPs: 97

Non-coding: 7 | Synonymous: 54 | Nonsynonymous: 35 | Stop Codon: 1

Protein Information

Protein Length: 1128 | Molecular Weight (kDa): 132.291

UniProt ID(s): Q8IEJ7

PDB ID(s): None

Isoelectric Point: 6.99

Protein Domain Annotations:

Source Family ID Description
InterPro IPR000795 Transcription factor, GTP-binding domain
InterPro IPR005225 Small GTP-binding protein domain
InterPro IPR009000 Translation protein, beta-barrel domain superfamily
InterPro IPR015760 Translation initiation factor IF- 2
InterPro IPR023115 Translation initiation factor IF- 2, domain 3
InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
InterPro IPR036925 Translation initiation factor IF-2, domain 3 superfamily
PFam PF00009 Transcription factor, GTP-binding domain
PFam PF11987 Translation initiation factor IF- 2, domain 3
Superfamily SSF50447 Translation protein, beta-barrel domain superfamily
Superfamily SSF52156 Translation initiation factor IF-2, domain 3 superfamily
Superfamily SSF52540 P-loop containing nucleoside triphosphate hydrolase

Associated Publications

PMID Title Authors DOI/Link
25689481 Targeting and function of proteins mediating translation initiation in organellesof Plasmodium falciparum. Haider A, Allen SM, ..., Habib S 10.1111/mmi.12972
34494883 A Prioritized and Validated Resource of Mitochondrial Proteins in PlasmodiumIdentifies Unique Biology. van Esveld SL, Meerstein-Kessel L, ..., Huynen MA 10.1128/mSphere.00614-21
16877317 The archaeal origins of the eukaryotic translational system Hartman H, Favaretto P, Smith TF 10.1155/2006/431618
6337147 Initiation factor and ribosome levels are coordinately controlled in Escherichiacoli growing at different rates Howe JG, Hershey JW https://pubmed.ncbi.nlm.nih.gov/6337147/