About Gene List

PF3D7_1228600 (MSP9)

Genome location: Pf3D7_12_v3:1,160,654..1,163,264(-)

Genome classification: Core

Function and Localization

Product Description: merozoite surface protein 9

SignalP Peptide: MMNMKIVLFSLLLFVIRWNIISC

# Transmembrane Domains: 0

EC Numbers: None

Curated GO (PlasmoDB):

Type GO Term Name
Component GO:1903561 extracellular vesicle
Component GO:0030430 host cell cytoplasm
Component GO:0016020 membrane
Component GO:0005634 nucleus
Component GO:0020003 symbiont-containing vacuole
Function GO:0003723 RNA binding

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 expressed 0.32 0.86
Trophozoite expressed 0.88 0.68
Schizont expressed 3.94 0.12
Gametocyte expressed 0.39 0.78

More info:

Resistome Mutations

Old (Pf3D7v3) Gene ID: PF3D7_1228600

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: 0.39 | MFS: -3.212 | #Insertions: 1

PlasmoGEM Phenotype: N/A

RMgmDB ABS Phenotype: Different from wild type (Pb ortholog: PY17X_1445800)

Modification: Tagged | RMgm-1536

More info: PhenoPlasm Link

Binding Evidence

AlphaFill Uniprot ID: A0A144A026

"Best" AlphaFill ligand hit: No AlphaFill hits

No associated EC numbers

No evidence of orthology to BindingDB entries

Orthology Information

Ortholog Group (OrthoMCL): OG6_533149

No human ortholog(s)

Genetic Variation

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

Homozygous genotype calls only

variant type common rare doubleton singleton
synonymous 11 26 16 26
disruptive 56 102 40 102
missense 24 53 29 74

Any inclusion in genotype call

variant type common rare doubleton singleton
synonymous 15 45 21 43
disruptive 85 153 68 124
missense 33 93 46 90

PlasmoDB Total SNPs: 118

Non-coding: 27 | Synonymous: 50 | Nonsynonymous: 41 | Stop Codon: 0

Protein Information

Protein Length: 743 | Molecular Weight (kDa): 86.623

UniProt ID(s): A0A144A026, C5HEE4, C5HEE5, C5HEE7, C5HEE9, C5HEF0, C5HEF3, C5HEF5, C5HEG0, C5HEG1, Q8I5D2, Q9NIH1

PDB ID(s): 2MU9

Isoelectric Point: 4.5

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
3309058 Monoclonal antibody characterization of Plasmodium falciparum antigens in immunecomplexes formed when schizonts rupture in the presence of immune serum. Chulay JD, Lyon JA, ..., Aikawa M https://pubmed.ncbi.nlm.nih.gov/3309058/
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
18820076 Deletion of the Plasmodium falciparum merozoite surface protein 7 gene impairsparasite invasion of erythrocytes. Kadekoppala M, O'Donnell RA, ..., Holder AA 10.1128/EC.00274-08
27503796 Proteome mapping of Plasmodium: identification of the P. yoelii remodellome. Siau A, Huang X, ..., Preiser PR 10.1038/srep31055
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
30379851 Identification of Plasmodium falciparum nuclear proteins by mass spectrometry andproposed protein annotation. Briquet S, Ourimi A, ..., Vaquero C 10.1371/journal.pone.0205596
33906926 Functional Characterization of the m(6)A-Dependent Translational Modulator PfYTH Sinha A, Baumgarten S, ..., Scherf A 10.1128/mBio.00661-21
16289042 Two Plasmodium falciparum merozoite proteins binding to erythrocyte band 3 form adirect complex Kariuki MM, Li X, ..., Oh SS https://pubmed.ncbi.nlm.nih.gov/16289042/
14630931 A co-ligand complex anchors Plasmodium falciparum merozoites to the erythrocyteinvasion receptor band 3 Li X, Chen H, ..., Oh SS 10.1074/jbc.M308716200
12797974 Phylogenetic analysis of CSP and MSP-9 gene sequences demonstrates the closerelationship of Plasmodium coatneyi to Plasmodium knowlesi Vargas-Serrato E, Corredor V, Galinski MR 10.1016/s1567-1348(03)00007-8
22649493 Influence of HLA-DRB1 and HLA-DQB1 alleles on IgG antibody response to the P.vivax MSP-1, MSP-3alpha and MSP-9 in individuals from Brazilian endemic area Lima-Junior JC, Rodrigues-da-Silva RN, ..., de Oliveira-Ferreira J 10.1371/journal.pone.0036419
24044894 The evolution and diversity of a low complexity vaccine candidate, merozoitesurface protein 9 (MSP-9), in Plasmodium vivax and closely related species Chenet SM, Pacheco MA, ..., Escalante AA 10.1016/j.meegid.2013.09.011
35141172 Antigen Discovery in Circulating Extracellular Vesicles From Plasmodium vivaxPatients Aparici-Herraiz I, Gualdron-Lopez M, ..., Del Portillo HA 10.3389/fcimb.2021.811390
32751598 Protective Immunity Induced by Virus-Like Particle Containing Merozoite SurfaceProtein 9 of Plasmodium berghei Lee SH, Kang HJ, ..., Quan FS 10.3390/vaccines8030428
32711079 Structural diversity, natural selection and intragenic recombination in thePlasmodium vivax merozoite surface protein 9 locus in Thailand Songsaigath S, Putaporntip C, Kuamsab N, Jongwutiwes S 10.1016/j.meegid.2020.104467
19463923 Sequence diversity and evolutionary dynamics of the dimorphic antigen merozoitesurface protein-6 and other Msp genes of Plasmodium falciparum Roy SW, Weedall GD, ..., Ferreira MU 10.1016/j.gene.2009.05.007
18272263 Plasmodium berghei merozoite surface protein-9: immunogenicity and protectiveefficacy using a homologous challenge model Lopera-Mesa TM, Kushwaha A, Mohmmed A, Chauhan VS 10.1016/j.vaccine.2007.12.042
33547377 Immunoglobulin G responses to variant forms of Plasmodium vivax merozoite surfaceprotein 9 upon natural infection in Thailand Songsaigath S, Makiuchi T, ..., Jongwutiwes S 10.1038/s41598-021-82928-4
25157665 Human erythrocyte band 3 functions as a receptor for the sialic acid-independentinvasion of Plasmodium falciparum. Role of the RhopH3-MSP1 complex Baldwin M, Yamodo I, ..., Chishti AH 10.1016/j.bbamcr.2014.08.008
35214662 Protection and Alleviated Inflammation Induced by Virus-like Particle VaccinesContaining Plasmodium berghei MSP-8, MSP-9 and RAP1 Lee SH, Chu KB, Kang HJ, Quan FS 10.3390/vaccines10020203
24373342 Natural antibody response to Plasmodium falciparum merozoite antigens MSP5, MSP9and EBA175 is associated to clinical protection in the Brazilian Amazon Medeiros MM, Fotoran WL, ..., Wunderlich G 10.1186/1471-2334-13-608
15121316 Immunogenicity of Plasmodium vivax merozoite surface protein-9 recombinantproteins expressed in E. coli Oliveira-Ferreira J, Vargas-Serrato E, ..., Galinski MR 10.1016/j.vaccine.2003.07.021