About Gene List

PF3D7_1415800 (KsgA1)

Genome location: Pf3D7_14_v3:639,678..641,985(+)

Genome classification: Core

Function and Localization

Product Description: ribosomal RNA small subunit methyltransferase A1

SignalP Peptide: N/A

# Transmembrane Domains: 0

EC Numbers: 2.1.1.- (Methyltransferases.);2.1.1.183 (18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase)

Curated GO (PlasmoDB):

Type GO Term Name
Component GO:0005737 cytoplasm
Component GO:0005739 mitochondrion
Function GO:0003677 DNA binding
Function GO:0005515 protein binding
Function GO:0000179 rRNA (adenine-N6,N6-)-dimethyltransferase activity
Function GO:0008649 rRNA methyltransferase activity
Process GO:0006352 DNA-templated transcription, initiation
Process GO:0031167 rRNA methylation
Process GO:0000154 rRNA modification

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

Stage LR class MCA mean MCA prop. zeros
Sporozoite possibly expressed N/A N/A
Ring expressed 0.31 0.84
Trophozoite expressed 0.21 0.87
Schizont possibly expressed 0.03 0.98
Gametocyte possibly expressed 0.14 0.91

More info:

Resistome Mutations

Old (Pf3D7v3) Gene ID: PF3D7_1415800

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: 0.156 | MFS: -3.214 | #Insertions: 0

PlasmoGEM Phenotype: Essential (Pb ortholog: PBANKA_1462800)

  • Relative Growth Rate: 0.15 ± 0.12
  • Confidence: 5.58

RMgmDB ABS Phenotype: N/A

More info: PhenoPlasm Link

Binding Evidence

AlphaFill Uniprot ID: Q8ILT8

"Best" AlphaFill ligand hit: ADN (adenosine, Local RMSD=0.61) with 3GRV (Global RMSD=6.11)

BRENDA EC Inhibitors:

EC # Name EC Inhibitors
2.1.1.- Ex: homocysteine S-methyltransferase EDTACTABNickelA9145CtylosintacrineTween 80FTI-2628macrocinadenosineRelomycinphosphate...
2.1.1.183 18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase No BRENDA inhibitors

Orthology to BindingDB Entries:

UniProt Protein Name Species Homology Source BindingDB Ligands
P21236 rRNA adenine N-6-methyltransferase Streptococcus pneumoniae OrthoMCL BLAST CHEMBL333812CHEMBL124572CHEMBL331440CHEMBL340522...
P02979 rRNA adenine N-6-methyltransferase OrthoMCL BLAST CHEMBL4165736

Orthology Information

Ortholog Group (OrthoMCL): OG6_100569

Most Similar Human Ortholog: A0A7P0T9Y7

TM-align score: 0.95 | RMSD: 1.41

Seq Identity: 0.46 | Length: 283 / 381

All Human Orthologs (OrthoMCL):

Gene ID Description
ENSG00000086189 DIMT1 rRNA methyltransferase and ribosome maturation factor

Protein Information

Protein Length: 381 | Molecular Weight (kDa): 43.922

UniProt ID(s): Q8ILT8

PDB ID(s): 2H1R

Isoelectric Point: 9.99

Protein Domain Annotations:

Source Family ID Description
InterPro IPR001737 Ribosomal RNA adenine methyltransferase KsgA/Erm
InterPro IPR011530 Ribosomal RNA adenine dimethylase
InterPro IPR020598 Ribosomal RNA adenine methylase transferase, N-terminal
InterPro IPR029063 S-adenosyl-L-methionine-dependent methyltransferase
PFam PF00398 Ribosomal RNA adenine methyltransferase KsgA/Erm
Superfamily SSF53335 S-adenosyl-L-methionine-dependent methyltransferase

Genetic Variation

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

Homozygous genotype calls only

variant type common rare doubleton singleton
synonymous 4 18 16 24
disruptive 2 18 16 40
missense 2 17 15 33

Any inclusion in genotype call

variant type common rare doubleton singleton
synonymous 10 46 16 18
disruptive 4 66 37 75
missense 3 50 29 40

PlasmoDB Total SNPs: 67

Non-coding: 48 | Synonymous: 15 | Nonsynonymous: 4 | Stop Codon: 0

Associated Publications

PMID Title Authors DOI/Link
12368864 Genome sequence of the human malaria parasite Plasmodium falciparum. Gardner MJ, Hall N, ..., Barrell B 10.1038/nature01097
29909066 Characterization of a Plasmodium falciparum rRNA methyltransferase. Gupta K, Gupta A, Habib S 10.1016/j.molbiopara.2018.06.001
32896572 PfKsgA1 functions as a transcription initiation factor and interacts with theN-terminal region of the mitochondrial RNA polymerase of Plasmodium falciparum. Gupta A, Shrivastava D, ..., Habib S 10.1016/j.ijpara.2020.07.010