Plasmepsin v licenses Plasmodium proteins for export into the host erythrocyte

Ilaria Russo, Shalon Babbitt, Vasant Muralidharan, Tamira Butler, Anna Oksman, Daniel E. Goldberg

    Research output: Contribution to journalArticlepeer-review

    Abstract

    During their intraerythrocytic development, malaria parasites export hundreds of proteins to remodel their host cell. Nutrient acquisition, cytoadherence and antigenic variation are among the key virulence functions effected by this erythrocyte takeover. Proteins destined for export are synthesized in the endoplasmic reticulum (ER) and cleaved at a conserved (PEXEL) motif, which allows translocation into the host cell via an ATP-driven translocon called the PTEX complex. We report that plasmepsin V, an ER aspartic protease with distant homology to the mammalian processing enzyme BACE, recognizes the PEXEL motif and cleaves it at the correct site. This enzyme is essential for parasite viability and ER residence is essential for its function. We propose that plasmepsin V is the PEXEL protease and is an attractive enzyme for antimalarial drug development. © 2010 Macmillan Publishers Limited. All rights reserved.
    Original languageEnglish
    Pages (from-to)632-636
    Number of pages4
    JournalNature
    Volume463
    Issue number7281
    DOIs
    Publication statusPublished - 4 Feb 2010

    Keywords

    • Amino Acid Motifs
    • Animals
    • Antimalarials/pharmacology
    • Aspartic Acid Endopeptidases/antagonists &
    • inhibitors/chemistry/genetics/*metabolism
    • Biocatalysis/drug effects
    • Endoplasmic Reticulum/enzymology/metabolism
    • Erythrocytes/cytology/*metabolism/parasitology
    • Genes, Dominant
    • Genes, Essential
    • HIV Protease Inhibitors/pharmacology
    • Humans
    • Malaria, Falciparum/*blood/metabolism/*parasitology/pathology
    • Multiprotein Complexes/metabolism
    • Pepstatins/pharmacology
    • Phenotype
    • Plasmids/genetics
    • Plasmodium falciparum/enzymology/genetics/*metabolism/pathogenicity
    • Protein Binding
    • Protein Sorting Signals
    • Protein Structure, Tertiary
    • Protein Transport
    • Proteomics
    • Protozoan Proteins/chemistry/*metabolism
    • Substrate Specificity

    Fingerprint

    Dive into the research topics of 'Plasmepsin v licenses Plasmodium proteins for export into the host erythrocyte'. Together they form a unique fingerprint.

    Cite this