A second merozoite surface protein (MSP-4) of Plasmodium falciparum that contains an epidermal growth factor-like domain
Details
Publication Year 1997-11-01, Volume 65, Issue #11, Page 4460-4467
Journal Title
INFECTION AND IMMUNITY
Publication Type
Journal Article
Abstract
Merozoite surface proteins of Plasmodium falciparum play a critical role in the invasion of human erythrocytes by the malaria parasite. Here we describe the identification of a novel protein with a molecular mass of 40 kDa that is found on the merozoite surface of P. falciparum. We call this protein merozoite surface protein 4 (MSP-4). Evidence for the surface location of MSP-4 includes (i) a staining pattern that is consistent with merozoite surface location in indirect immunofluorescent studies of cultured parasites, (ii) localization of MSP-4 in the detergent phase in Triton X-114 partitioning studies, and (iii) nucleotide sequencing studies which predict the presence of an N-terminal signal sequence and a hydrophobic C-terminal sequence in the protein. Immunoprecipitation studies of biosynthetically labelled parasites with [JH]myristic acid indicated that MSP-4 is anchored on the merozoite surface by a glycosylphosphatidylinositol moiety. Of considerable interest is the presence of a single epidermal growth factor-like domain at the C terminus of the MSP-4 protein, making it the second protein with such a structure to be found on the merozoite surface.
Publisher
AMER SOC MICROBIOLOGY
Keywords
TRANSMISSION-BLOCKING ANTIBODIES; CARBOXYL-TERMINAL FRAGMENT; MALARIA PARASITES; VACCINE CANDIDATE; ERYTHROCYTE INVASION; ANTIGEN; EXPRESSION; IDENTIFICATION; PURIFICATION; SPOROZOITE
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Creation Date: 1997-11-01 12:00:00
Last Modified: 0001-01-01 12:00:00
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