About Gene List

PF3D7_1220900 (HP1)

Genome location: Pf3D7_12_v3:830,802..833,569(-)

Genome classification: Core

Function and Localization

Product Description: heterochromatin protein 1

SignalP Peptide: N/A

# Transmembrane Domains: 0

EC Numbers: None

Curated GO (PlasmoDB):

Type GO Term Name
Component GO:0000785 chromatin
Component GO:0000792 heterochromatin
Component GO:0005739 mitochondrion
Component GO:0034399 nuclear periphery
Component GO:0005634 nucleus
Function GO:0062072 H3K9me3 modified histone binding
Function GO:0003682 chromatin binding
Function GO:0005515 protein binding
Process GO:0008283 cell population proliferation
Process GO:0006333 chromatin assembly or disassembly
Process GO:0031507 heterochromatin assembly
Process GO:0031935 obsolete regulation of chromatin silencing

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 expressed 0.06 0.97
Trophozoite expressed 0.34 0.78
Schizont expressed 0.28 0.81
Gametocyte expressed 0.14 0.91

More info:

Resistome Mutations

Old (Pf3D7v3) Gene ID: PF3D7_1220900

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: 0.129 | MFS: -3.236 | #Insertions: 0

PlasmoGEM Phenotype: Slow (Pb ortholog: PBANKA_1436100)

  • Relative Growth Rate: 0.32 ± 0.19
  • Confidence: 4.72

RMgmDB ABS Phenotype: Different from wild type (Pb ortholog: PBANKA_1436100)

Modification: Disrupted | RMgm-3922

More info: PhenoPlasm Link

Binding Evidence

AlphaFill Uniprot ID: Q8I5K4

"Best" AlphaFill ligand hit: No AlphaFill hits

No associated EC numbers

No evidence of orthology to BindingDB entries

Orthology Information

Ortholog Group (OrthoMCL): OG6_124216

No human ortholog(s)

Genetic Variation

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

Homozygous genotype calls only

variant type common rare doubleton singleton
synonymous 0 0 0 0
disruptive 0 0 0 1
missense 0 0 0 0

Any inclusion in genotype call

variant type common rare doubleton singleton
synonymous 0 0 0 1
disruptive 0 0 0 2
missense 0 0 0 0

PlasmoDB Total SNPs: 125

Non-coding: 117 | Synonymous: 6 | Nonsynonymous: 2 | Stop Codon: 0

Protein Information

Protein Length: 266 | Molecular Weight (kDa): 31.018

UniProt ID(s): Q25732, Q8I5K4

PDB ID(s): None

Isoelectric Point: 10.09

Protein Domain Annotations:

Source Family ID Description
InterPro IPR000953 Chromo/chromo shadow domain
InterPro IPR016197 Chromo-like domain superfamily
InterPro IPR023779 Chromo domain, conserved site
InterPro IPR023780 Chromo domain
PFam PF00385 Chromo domain
Superfamily SSF54160 Chromo-like domain 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
19270070 Plasmodium falciparum heterochromatin protein 1 binds to tri-methylated histone 3lysine 9 and is linked to mutually exclusive expression of var genes. Perez-Toledo K, Rojas-Meza AP, ..., Hernandez-Rivas R 10.1093/nar/gkp115
19730695 Plasmodium falciparum heterochromatin protein 1 marks genomic loci linked tophenotypic variation of exported virulence factors. Flueck C, Bartfai R, ..., Voss TS 10.1371/journal.ppat.1000569
20195509 A major role for the Plasmodium falciparum ApiAP2 protein PfSIP2 in chromosomeend biology. Flueck C, Bartfai R, ..., Voss TS 10.1371/journal.ppat.1000784
23181666 Organellar proteomics reveals hundreds of novel nuclear proteins in the malariaparasite Plasmodium falciparum. Oehring SC, Woodcroft BJ, ..., Voss TS 10.1186/gb-2012-13-11-r108
29183721 Role of Chromatin assembly factor 1 in DNA replication of Plasmodium falciparum. Gupta MK, Agarawal M, ..., Dhar SK 10.1016/j.bbrc.2017.11.131
29503181 Comparative Heterochromatin Profiling Reveals Conserved and Unique EpigenomeSignatures Linked to Adaptation and Development of Malaria Parasites. Fraschka SA, Filarsky M, ..., Voss TS 10.1016/j.chom.2018.01.008
29539423 A Specific PfEMP1 Is Expressed in P. falciparum Sporozoites and Plays a Role inHepatocyte Infection. Zanghi G, Vembar SS, ..., Scherf A 10.1016/j.celrep.2018.02.075
29590075 GDV1 induces sexual commitment of malaria parasites by antagonizing HP1-dependentgene silencing. Filarsky M, Fraschka SA, ..., Voss TS 10.1126/science.aan6042
30379851 Identification of Plasmodium falciparum nuclear proteins by mass spectrometry andproposed protein annotation. Briquet S, Ourimi A, ..., Vaquero C 10.1371/journal.pone.0205596
31723180 Mapping and functional analysis of heterochromatin protein 1 phosphorylation inthe malaria parasite Plasmodium falciparum. Bui HTN, Niederwieser I, ..., Voss TS 10.1038/s41598-019-53325-9
31728527 Epigenetic reader complexes of the human malaria parasite, Plasmodium falciparum. Hoeijmakers WAM, Miao J, ..., Bartfai R 10.1093/nar/gkz1044
33536327 Investigation of Heterochromatin Protein 1 Function in the Malaria Parasite Plasmodium falciparum Using a Conditional Domain Deletion and Swapping Approach Bui HTN, Passecker A, Brancucci NMB, Voss TS 10.1128/mSphere.01220-20
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
38289024 Heat stress-induced activation of MAPK pathway attenuates Atf1-dependentepigenetic inheritance of heterochromatin in fission yeast Sun L, Liu L, ..., Jin QW 10.7554/eLife.90525