About Gene List

PF3D7_1471100 (EXP2)

Genome location: Pf3D7_14_v3:2,903,947..2,907,414(-)

Genome classification: Core

Function and Localization

Product Description: exported protein 2

SignalP Peptide: MKVSYIFSFFLLFFVYKNTNT

# Transmembrane Domains: 0

EC Numbers: None

Curated GO (PlasmoDB):

Type GO Term Name
Component GO:0097619 PTEX complex
Component GO:1903561 extracellular vesicle
Component GO:0044161 host cell cytoplasmic vesicle
Component GO:0020026 merozoite dense granule
Component GO:0005634 nucleus
Component GO:0020005 symbiont-containing vacuole membrane
Function GO:0003723 RNA binding
Function GO:0015267 channel activity
Function GO:0005515 protein binding
Process GO:0044409 entry into host
Process GO:0044658 pore formation in membrane of host by symbiont

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 1.62 0.38
Trophozoite expressed 2.67 0.12
Schizont expressed 0.41 0.78
Gametocyte expressed 0.60 0.71

More info:

Resistome Mutations

Old (Pf3D7v3) Gene ID: PF3D7_1471100

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: 0.12 | MFS: -3.183 | #Insertions: 0

PlasmoGEM Phenotype: Essential (Pb ortholog: PBANKA_1334300)

  • Relative Growth Rate: 0.14 ± 0.17
  • Confidence: 4.93

RMgmDB ABS Phenotype: Not different from wild type (Pb ortholog: PBANKA_1334300)

Modification: Mutated | RMgm-5258

More info: PhenoPlasm Link

Binding Evidence

AlphaFill Uniprot ID: Q8IKC8

"Best" AlphaFill ligand hit: No AlphaFill hits

No associated EC numbers

No evidence of orthology to BindingDB entries

Orthology Information

Ortholog Group (OrthoMCL): OG6_533581

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 26 8 24
disruptive 10 14 8 27
missense 5 11 5 17

Any inclusion in genotype call

variant type common rare doubleton singleton
synonymous 16 41 19 22
disruptive 15 40 31 72
missense 7 30 20 42

PlasmoDB Total SNPs: 271

Non-coding: 251 | Synonymous: 15 | Nonsynonymous: 5 | Stop Codon: 0

Protein Information

Protein Length: 287 | Molecular Weight (kDa): 33.412

UniProt ID(s): O61141, Q8IKC8

PDB ID(s): 6E10, 6E11

Isoelectric Point: 4.87

Protein Domain Annotations:

Source Family ID Description
InterPro N/A N/A
PFam N/A N/A
Superfamily N/A 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
22253438 Biosynthesis, localization, and macromolecular arrangement of the Plasmodiumfalciparum translocon of exported proteins (PTEX). Bullen HE, Charnaud SC, ..., Gilson PR 10.1074/jbc.M111.328591
25043010 PTEX component HSP101 mediates export of diverse malaria effectors into hosterythrocytes. Beck JR, Muralidharan V, Oksman A, Goldberg DE 10.1038/nature13574
25662767 Host erythrocyte environment influences the localization of exported protein 2,an essential component of the Plasmodium translocon. Meibalan E, Comunale MA, ..., Burns JM Jr 10.1128/EC.00228-14
27168322 Stable Translocation Intermediates Jam Global Protein Export in Plasmodiumfalciparum Parasites and Link the PTEX Component EXP2 with TranslocationActivity. Mesen-Ramirez P, Reinsch F, ..., Spielmann T 10.1371/journal.ppat.1005618
27865834 Expression and characterization of the Plasmodium translocon of the exportedproteins component EXP2. Hakamada K, Watanabe H, ..., Yohda M 10.1016/j.bbrc.2016.11.097
28944300 Proteomic analysis of extracellular vesicles from a Plasmodium falciparum Kenyanclinical isolate defines a core parasite secretome. Abdi A, Yu L, ..., Rayner J 10.12688/wellcomeopenres.11910.2
29487358 PV1, a novel Plasmodium falciparum merozoite dense granule protein, interactswith exported protein in infected erythrocytes. Morita M, Nagaoka H, ..., Takashima E 10.1038/s41598-018-22026-0
30150733 EXP2 is a nutrient-permeable channel in the vacuolar membrane of Plasmodium andis essential for protein export via PTEX. Garten M, Nasamu AS, ..., Beck JR 10.1038/s41564-018-0222-7
30150771 Malaria parasite translocon structure and mechanism of effector export. Ho CM, Beck JR, ..., Zhou ZH 10.1038/s41586-018-0469-4
30379851 Identification of Plasmodium falciparum nuclear proteins by mass spectrometry andproposed protein annotation. Briquet S, Ourimi A, ..., Vaquero C 10.1371/journal.pone.0205596
30439948 Knockdown of the translocon protein EXP2 in Plasmodium falciparum reduces growthand protein export. Charnaud SC, Kumarasingha R, ..., Gilson PR 10.1371/journal.pone.0204785
30476118 The N-terminus of EXP2 forms the membrane-associated pore of the proteinexporting translocon PTEX in Plasmodium falciparum. Sanders PR, Dickerman BK, ..., Gilson PR 10.1093/jb/mvy099
31568532 EXP1 is critical for nutrient uptake across the parasitophorous vacuole membraneof malaria parasites. Mesen-Ramirez P, Bergmann B, ..., Spielmann T 10.1371/journal.pbio.3000473
33159090 Plasmodium translocon component EXP2 facilitates hepatocyte invasion. Mello-Vieira J, Enguita FJ, ..., Mota MM 10.1038/s41467-020-19492-4
33906926 Functional Characterization of the m(6)A-Dependent Translational Modulator PfYTH Sinha A, Baumgarten S, ..., Scherf A 10.1128/mBio.00661-21
35192672 A revised mechanism for how Plasmodium falciparum recruits and exports proteinsinto its erythrocytic host cell. Gabriela M, Matthews KM, ..., Gilson PR 10.1371/journal.ppat.1009977
38282616 Dissecting EXP2 sequence requirements for protein export in malaria parasites Pitman EL, Counihan NA, ..., de Koning-Ward TF 10.3389/fcimb.2023.1332146
37552754 Knock-sideways by inducible ER retrieval enables a unique approach for studyingPlasmodium-secreted proteins Fierro MA, Hussain T, Campin LJ, Beck JR 10.1073/pnas.2308676120
37939134 NK cell-induced damage to P.falciparum-infected erythrocytes requiresligand-specific recognition and releases parasitophorous vacuoles that arephagocytosed by monocytes in the presence of immune IgG Sekar P, Rajagopalan S, ..., Long EO 10.1371/journal.ppat.1011585
36126089 A member of the tryptophan-rich protein family is required for efficientsequestration of Plasmodium berghei schizonts Gabelich JA, Grutzke J, ..., Ingmundson A 10.1371/journal.ppat.1010846
36445080 The PTEX Pore Component EXP2 Is Important for Intrahepatic Development during thePlasmodium Liver Stage Hussain T, Linera-Gonzalez J, ..., Beck JR 10.1128/mbio.03096-22