About Gene List

PF3D7_1217100 (TOP6A)

Genome location: Pf3D7_12_v3:675,170..677,609(-)

Genome classification: Core

Function and Localization

Product Description: DNA topoisomerase 6 subunit A

SignalP Peptide: N/A

# Transmembrane Domains: 0

EC Numbers: 5.99.1.3 (Transferred entry: 5.6.2.2)

Curated GO (PlasmoDB):

Type GO Term Name
Component GO:0000228 nuclear chromosome
Function GO:0003677 DNA binding
Function GO:0003916 DNA topoisomerase activity
Function GO:0016889 endodeoxyribonuclease activity, producing 3'-phosphomonoesters
Function GO:0005515 protein binding
Process GO:0042138 meiotic DNA double-strand break formation
Process GO:0000706 meiotic DNA double-strand break processing
Process GO:0007131 reciprocal meiotic recombination

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

Stage LR class MCA mean MCA prop. zeros
Sporozoite expressed N/A N/A
Ring possibly expressed nd nd
Trophozoite expressed nd nd
Schizont possibly expressed nd nd
Gametocyte expressed nd nd

More info:

Resistome Mutations

Old (Pf3D7v3) Gene ID: PF3D7_1217100.2

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: Mutable in CDS

MIS: 0.926 | MFS: -2.501 | #Insertions: 1

PlasmoGEM Phenotype: Dispensable (Pb ortholog: PBANKA_1432700)

  • Relative Growth Rate: 0.99 ± 0.16
  • Confidence: 5.04

RMgmDB ABS Phenotype: Different from wild type (Pb ortholog: PBANKA_1432700)

Modification: Disrupted | RMgm-3902

More info: PhenoPlasm Link

Binding Evidence

AlphaFill Uniprot ID: Q8I5N7

"Best" AlphaFill ligand hit: No AlphaFill hits

BRENDA EC Inhibitors:

EC # Name EC Inhibitors
5.99.1.3 DNA topoisomerase (ATP-hydrolysing) No BRENDA inhibitors
5.99.1.3 DNA topoisomerase (ATP-hydrolysing) No BRENDA inhibitors

No evidence of orthology to BindingDB entries

Orthology Information

Ortholog Group (OrthoMCL): OG6_101269

Most Similar Human Ortholog: Q9Y5K1

TM-align score: 0.86 | RMSD: 2.56

Seq Identity: 0.26 | Length: 311 / 327

All Human Orthologs (OrthoMCL):

Gene ID Description
ENSG00000054796 SPO11 initiator of meiotic double stranded breaks

Genetic Variation

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

Homozygous genotype calls only

variant type common rare doubleton singleton
synonymous 4 22 9 25
disruptive 11 45 28 49
missense 11 44 28 47

Any inclusion in genotype call

variant type common rare doubleton singleton
synonymous 9 35 24 26
disruptive 17 89 43 99
missense 14 82 37 72

PlasmoDB Total SNPs: 161

Non-coding: 143 | Synonymous: 11 | Nonsynonymous: 7 | Stop Codon: 0

Protein Information

Protein Length: 327 | Molecular Weight (kDa): 38.319

UniProt ID(s): Q8I5N7

PDB ID(s): None

Isoelectric Point: 9.72

Protein Domain Annotations:

Source Family ID Description
InterPro IPR002815 Spo11/DNA topoisomerase VI subunit A
InterPro IPR013049 Spo11/DNA topoisomerase VI, subunit A, N-terminal
InterPro IPR034136 Topoisomerase 6 subunit A/Spo11, TOPRIM domain
InterPro IPR036078 Spo11/DNA topoisomerase VI subunit A superfamily
PFam PF04406 Spo11/DNA topoisomerase VI, subunit A, N-terminal
Superfamily SSF56726 Spo11/DNA topoisomerase VI subunit A superfamily

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
18007598 A novel plant gene essential for meiosis is related to the human CtIP and theyeast COM1/SAE2 gene Uanschou C, Siwiec T, ..., Schlogelhofer P 10.1038/sj.emboj.7601913
15477092 Purification, folding, and characterization of Rec12 (Spo11) meiotic recombinaseof fission yeast Wu H, Gao J, ..., Wahls WP 10.1016/j.pep.2004.07.012