Abstract
A Plasmodium falciparum protein which is exported into a new compartment in the host erythrocyte has been located. This protein, exp-1, has a variable region recognized by a monoclonal antibody. Naturally occurring mutants of this region have been characterized. All mutants studied so far have the same A----G transition abolishing the target for the antibody. The exp-1 gene has a complex structure containing two introns. It is highly conserved in five independent, genetically defined parasite lines, suggesting that exp-1 has an important function. We discuss the possible role of exp-1 in P. falciparum infections.
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- Aikawa M., Uni Y., Andrutis A. T., Howard R. J. Membrane-associated electron-dense material of the asexual stages of Plasmodium falciparum: evidence for movement from the intracellular parasite to the erythrocyte membrane. Am J Trop Med Hyg. 1986 Jan;35(1):30–36. doi: 10.4269/ajtmh.1986.35.30. [DOI] [PubMed] [Google Scholar]
- Coppel R. L., Favaloro J. M., Crewther P. E., Burkot T. R., Bianco A. E., Stahl H. D., Kemp D. J., Anders R. F., Brown G. V. A blood stage antigen of Plasmodium falciparum shares determinants with the sporozoite coat protein. Proc Natl Acad Sci U S A. 1985 Aug;82(15):5121–5125. doi: 10.1073/pnas.82.15.5121. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cowman A. F., Saint R. B., Coppel R. L., Brown G. V., Anders R. F., Kemp D. J. Conserved sequences flank variable tandem repeats in two S-antigen genes of Plasmodium falciparum. Cell. 1985 Apr;40(4):775–783. doi: 10.1016/0092-8674(85)90337-x. [DOI] [PubMed] [Google Scholar]
- Dame J. B., Williams J. L., McCutchan T. F., Weber J. L., Wirtz R. A., Hockmeyer W. T., Maloy W. L., Haynes J. D., Schneider I., Roberts D. Structure of the gene encoding the immunodominant surface antigen on the sporozoite of the human malaria parasite Plasmodium falciparum. Science. 1984 Aug 10;225(4662):593–599. doi: 10.1126/science.6204383. [DOI] [PubMed] [Google Scholar]
- Devereux J., Haeberli P., Smithies O. A comprehensive set of sequence analysis programs for the VAX. Nucleic Acids Res. 1984 Jan 11;12(1 Pt 1):387–395. doi: 10.1093/nar/12.1part1.387. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Elford B. C., Haynes J. D., Chulay J. D., Wilson R. J. Selective stage-specific changes in the permeability to small hydrophilic solutes of human erythrocytes infected with Plasmodium falciparum. Mol Biochem Parasitol. 1985 Jun;16(1):43–60. doi: 10.1016/0166-6851(85)90048-9. [DOI] [PubMed] [Google Scholar]
- Ginsburg H., Kutner S., Krugliak M., Cabantchik Z. I. Characterization of permeation pathways appearing in the host membrane of Plasmodium falciparum infected red blood cells. Mol Biochem Parasitol. 1985 Mar;14(3):313–322. doi: 10.1016/0166-6851(85)90059-3. [DOI] [PubMed] [Google Scholar]
- Goman M., Langsley G., Hyde J. E., Yankovsky N. K., Zolg J. W., Scaife J. G. The establishment of genomic DNA libraries for the human malaria parasite Plasmodium falciparum and identification of individual clones by hybridisation. Mol Biochem Parasitol. 1982 Jun;5(6):391–400. doi: 10.1016/0166-6851(82)90012-3. [DOI] [PubMed] [Google Scholar]
- Hall R., Osland A., Hyde J. E., Simmons D. L., Hope I. A., Scaife J. G. Processing, polymorphism, and biological significance of P190, a major surface antigen of the erythrocytic forms of Plasmodium falciparum. Mol Biochem Parasitol. 1984 Apr;11:61–80. doi: 10.1016/0166-6851(84)90055-0. [DOI] [PubMed] [Google Scholar]
- Hope I. A., Hall R., Simmons D. L., Hyde J. E., Scaife J. G. Evidence for immunological cross-reaction between sporozoites and blood stages of a human malaria parasite. Nature. 1984 Mar 8;308(5955):191–194. doi: 10.1038/308191a0. [DOI] [PubMed] [Google Scholar]
- Hope I. A., Mackay M., Hyde J. E., Goman M., Scaife J. The gene for an exported antigen of the malaria parasite Plasmodium falciparum cloned and expressed in Escherichia coli. Nucleic Acids Res. 1985 Jan 25;13(2):369–379. doi: 10.1093/nar/13.2.369. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Howard R. J. Alterations in the surface membrane of red blood cells during malaria. Immunol Rev. 1982;61:67–107. doi: 10.1111/j.1600-065x.1982.tb00374.x. [DOI] [PubMed] [Google Scholar]
- Keller E. B., Noon W. A. Intron splicing: a conserved internal signal in introns of animal pre-mRNAs. Proc Natl Acad Sci U S A. 1984 Dec;81(23):7417–7420. doi: 10.1073/pnas.81.23.7417. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kemp D. J., Coppel R. L., Stahl H. D., Bianco A. E., Corcoran L. M., McIntyre P., Langford C. J., Favaloro J. M., Crewther P. E., Brown G. V. The Wellcome Trust lecture. Genes for antigens of Plasmodium falciparum. Parasitology. 1986;92 (Suppl):S83–108. doi: 10.1017/s0031182000085711. [DOI] [PubMed] [Google Scholar]
- Laemmli U. K. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature. 1970 Aug 15;227(5259):680–685. doi: 10.1038/227680a0. [DOI] [PubMed] [Google Scholar]
- Langford C. J., Gallwitz D. Evidence for an intron-contained sequence required for the splicing of yeast RNA polymerase II transcripts. Cell. 1983 Jun;33(2):519–527. doi: 10.1016/0092-8674(83)90433-6. [DOI] [PubMed] [Google Scholar]
- Mackay M., Goman M., Bone N., Hyde J. E., Scaife J., Certa U., Stunnenberg H., Bujard H. Polymorphism of the precursor for the major surface antigens of Plasmodium falciparum merozoites: studies at the genetic level. EMBO J. 1985 Dec 30;4(13B):3823–3829. doi: 10.1002/j.1460-2075.1985.tb04154.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- McBride J. S., Newbold C. I., Anand R. Polymorphism of a high molecular weight schizont antigen of the human malaria parasite Plasmodium falciparum. J Exp Med. 1985 Jan 1;161(1):160–180. doi: 10.1084/jem.161.1.160. [DOI] [PMC free article] [PubMed] [Google Scholar]
- McBride J. S., Walliker D., Morgan G. Antigenic diversity in the human malaria parasite Plasmodium falciparum. Science. 1982 Jul 16;217(4556):254–257. doi: 10.1126/science.6178159. [DOI] [PubMed] [Google Scholar]
- Mount S. M. A catalogue of splice junction sequences. Nucleic Acids Res. 1982 Jan 22;10(2):459–472. doi: 10.1093/nar/10.2.459. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Oquendo P., Goman M., Mackay M., Langsley G., Walliker D., Scaife J. Characterisation of a repetitive DNA sequence from the malaria parasite, Plasmodium falciparum. Mol Biochem Parasitol. 1986 Jan;18(1):89–101. doi: 10.1016/0166-6851(86)90053-8. [DOI] [PubMed] [Google Scholar]
- Pikielny C. W., Teem J. L., Rosbash M. Evidence for the biochemical role of an internal sequence in yeast nuclear mRNA introns: implications for U1 RNA and metazoan mRNA splicing. Cell. 1983 Sep;34(2):395–403. doi: 10.1016/0092-8674(83)90373-2. [DOI] [PubMed] [Google Scholar]
- Ravetch J. V., Feder R., Pavlovec A., Blobel G. Primary structure and genomic organization of the histidine-rich protein of the malaria parasite Plasmodium lophurae. Nature. 1984 Dec 13;312(5995):616–620. doi: 10.1038/312616a0. [DOI] [PubMed] [Google Scholar]
- Rosario V. Cloning of naturally occurring mixed infections of malaria parasites. Science. 1981 May 29;212(4498):1037–1038. doi: 10.1126/science.7015505. [DOI] [PubMed] [Google Scholar]
- Ruskin B., Krainer A. R., Maniatis T., Green M. R. Excision of an intact intron as a novel lariat structure during pre-mRNA splicing in vitro. Cell. 1984 Aug;38(1):317–331. doi: 10.1016/0092-8674(84)90553-1. [DOI] [PubMed] [Google Scholar]
- Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sharp P. A. On the origin of RNA splicing and introns. Cell. 1985 Sep;42(2):397–400. doi: 10.1016/0092-8674(85)90092-3. [DOI] [PubMed] [Google Scholar]
- Sherman I. W. Biochemistry of Plasmodium (malarial parasites). Microbiol Rev. 1979 Dec;43(4):453–495. doi: 10.1128/mr.43.4.453-495.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sherman I. W. Membrane structure and function of malaria parasites and the infected erythrocyte. Parasitology. 1985 Dec;91(Pt 3):609–645. doi: 10.1017/s0031182000062843. [DOI] [PubMed] [Google Scholar]
- Southern E. M. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol. 1975 Nov 5;98(3):503–517. doi: 10.1016/s0022-2836(75)80083-0. [DOI] [PubMed] [Google Scholar]
- Südhof T. C., Goldstein J. L., Brown M. S., Russell D. W. The LDL receptor gene: a mosaic of exons shared with different proteins. Science. 1985 May 17;228(4701):815–822. doi: 10.1126/science.2988123. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Thaithong S., Beale G. H., Fenton B., McBride J., Rosario V., Walker A., Walliker D. Clonal diversity in a single isolate of the malaria parasite Plasmodium falciparum. Trans R Soc Trop Med Hyg. 1984;78(2):242–245. doi: 10.1016/0035-9203(84)90287-6. [DOI] [PubMed] [Google Scholar]
- Thaithong S., Beale G. H. Resistance of ten Thai isolates of Plasmodium falciparum to chloroquine and pyrimethamine by in vitro tests. Trans R Soc Trop Med Hyg. 1981;75(2):271–273. doi: 10.1016/0035-9203(81)90333-3. [DOI] [PubMed] [Google Scholar]
- Towbin H., Staehelin T., Gordon J. Electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose sheets: procedure and some applications. Proc Natl Acad Sci U S A. 1979 Sep;76(9):4350–4354. doi: 10.1073/pnas.76.9.4350. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Trager W., Jensen J. B. Human malaria parasites in continuous culture. Science. 1976 Aug 20;193(4254):673–675. doi: 10.1126/science.781840. [DOI] [PubMed] [Google Scholar]
- Yanisch-Perron C., Vieira J., Messing J. Improved M13 phage cloning vectors and host strains: nucleotide sequences of the M13mp18 and pUC19 vectors. Gene. 1985;33(1):103–119. doi: 10.1016/0378-1119(85)90120-9. [DOI] [PubMed] [Google Scholar]
- Zolg J. W., Macleod A. J., Scaife J. G., Beaudoin R. L. The accumulation of lactic acid and its influence on the growth of Plasmodium falciparum in synchronized cultures. In Vitro. 1984 Mar;20(3 Pt 1):205–215. doi: 10.1007/BF02618189. [DOI] [PubMed] [Google Scholar]
- Zuckerman A., Spira D., Hamburger J. A procedure for the harvesting of mammalian plasmodia. Bull World Health Organ. 1967;37(3):431–436. [PMC free article] [PubMed] [Google Scholar]


