About Gene List

PF3D7_1022800 (ISPG)

Genome location: Pf3D7_10_v3:955,084..958,629(+)

Genome classification: Core

Function and Localization

Product Description: 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase (ferredoxin)

SignalP Peptide: MSYIKRLILFMLLFYSHVKI

# Transmembrane Domains: 0

EC Numbers: 1.17.7.1 ((E)-4-hydroxy-3-methylbut-2-enyl-diphosphate synthase (ferredoxin));1.17.7.3 ((E)-4-hydroxy-3-methylbut-2-enyl-diphosphate synthase (flavodoxin))

Curated GO (PlasmoDB):

Type GO Term Name
Component GO:0020011 apicoplast
Function GO:0051539 4 iron, 4 sulfur cluster binding
Function GO:0046429 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase activity
Function GO:0005515 protein binding
Process GO:0019288 isopentenyl diphosphate biosynthetic process, methylerythritol 4-phosphate pathway

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 0.06 0.97
Trophozoite possibly expressed 0.60 0.66
Schizont expressed 0.41 0.75
Gametocyte not expressed 0.24 0.86

More info:

Resistome Mutations

Old (Pf3D7v3) Gene ID: PF3D7_1022800

Resistome Missense Mutations: L603F

Resistome Compounds with Missense Mutations: Desoxyepothilone B

Resistome # Samples with Disruptive Mutations: 1 (1 missense, 1 "interesting" missense)

Essentiality (ABS)

Zhang Phenotype: Non - Mutable in CDS

MIS: 0.133 | MFS: -3.19 | #Insertions: 0

PlasmoGEM Phenotype: Essential (Pb ortholog: PBANKA_0507000)

  • Relative Growth Rate: 0.15 ± 0.26
  • Confidence: 4.07

RMgmDB ABS Phenotype: N/A

More info: PhenoPlasm Link

Binding Evidence

AlphaFill Uniprot ID: Q8IJH7

"Best" AlphaFill ligand hit: CDI (2c-methyl-d-erythritol 2,4-cyclodiphosphate, Local RMSD=0.58) with 4G9P (Global RMSD=4.21)

BRENDA EC Inhibitors:

EC # Name EC Inhibitors
1.17.7.1 (E)-4-hydroxy-3-methylbut-2-enyl-diphosphate synthase (ferredoxin) No BRENDA inhibitors
1.17.7.3 (E)-4-hydroxy-3-methylbut-2-enyl-diphosphate synthase (flavodoxin) EDTAaminosulfonylcarbamateN-acyl-N'-oxysulfamatebut-3-yn-1-yl trihydrogen diphosphateprop-2-yn-1-yl trihydrogen diphosphate(2Z)-4-amino-3-methylbut-2-en-1-yl trihydrogen diphosphate(2Z)-3-methyl-4-sulfanylbut-2-en-1-yl trihydrogen diphosphate

No evidence of orthology to BindingDB entries

Orthology Information

Ortholog Group (OrthoMCL): OG6_105784

No human ortholog(s)

Genetic Variation

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

Homozygous genotype calls only

variant type common rare doubleton singleton
synonymous 5 17 13 29
disruptive 16 36 42 98
missense 8 33 39 84

Any inclusion in genotype call

variant type common rare doubleton singleton
synonymous 6 41 18 60
disruptive 26 129 67 186
missense 12 98 56 128

PlasmoDB Total SNPs: 74

Non-coding: 41 | Synonymous: 14 | Nonsynonymous: 19 | Stop Codon: 0

Protein Information

Protein Length: 824 | Molecular Weight (kDa): 95.226

UniProt ID(s): Q8IJH7, Q9BJX5

PDB ID(s): None

Isoelectric Point: 9.09

Protein Domain Annotations:

Source Family ID Description
InterPro IPR004588 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase, bacterial-type
InterPro IPR017178 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase, atypical
PFam PF04551 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase, bacterial-type
Superfamily SSF56014 N/A

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
16267556 A protein interaction network of the malaria parasite Plasmodium falciparum. LaCount DJ, Vignali M, ..., Hughes RE 10.1038/nature04104
25204654 Kinase-associated endopeptidase 1 (Kae1) participates in an atypicalribosome-associated complex in the apicoplast of Plasmodium falciparum. Mallari JP, Oksman A, Vaupel B, Goldberg DE 10.1074/jbc.M114.586735
28007455 Characterization of 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase (IspG)from Plasmodium vivax and it's potential as an antimalarial drug target. Saggu GS, Garg S, ..., Saxena V 10.1016/j.ijbiomac.2016.12.033
30212465 Integrative proteomics and bioinformatic prediction enable a high-confidenceapicoplast proteome in malaria parasites. Boucher MJ, Ghosh S, ..., Yeh E 10.1371/journal.pbio.2005895
35272619 De novo assembly and analysis of Polygonatum cyrtonema Hua and identification ofgenes involved in polysaccharide and saponin biosynthesis Li D, Wang Q, ..., Wang H 10.1186/s12864-022-08421-y
35463632 Apicoplast Journey and Its Essentiality as a Compartment for Malaria ParasiteSurvival Saggu GS 10.3389/fcimb.2022.881825
35164549 Roles of Ferredoxin-Dependent Proteins in the Apicoplast of Plasmodium falciparumParasites Swift RP, Rajaram K, ..., Prigge ST 10.1128/mbio.03023-21