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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
1996-8-13
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pubmed:abstractText |
F-actin was detected in asexual-stage Plasmodium falciparum parasites by fluorescence microscopy of blood films stained with fluorescent phalloidin derivatives. F-actin was present at all stages of development and appeared diffusely distributed in trophic parasites, but merozoites stained strongly at the poles and peripheries. No filament bundles could be discerned. A similar distribution was obtained by immunofluorescence with 2 polyclonal anti-actin antibodies, one of which was directed against a peptide sequence present only in parasite actin (as inferred from the DNA sequence of the gene). A monoclonal anti-actin antibody stained very mature or rupturing schizonts but not immature parasites. Myosin was identified in immunoblots of parasite protein extracts by several monoclonal anti-skeletal muscle myosin antibodies, as well as by a polyclonal antiserum directed against a consensus conserved myosin sequence (IQ motif). The identity of the polypeptides recognised by these antibodies was confirmed by overlaying blots with biotinylated F-actin. The antiserum and one of the monoclonal antibodies were used in immunofluorescence studies and were found to stain all blood-stage parasites, with maximal intensity towards the poles of merozoites. Our results are consistent with the presence of an actomyosin motor system in the blood-stage malaria parasite.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Actins,
http://linkedlifedata.com/resource/pubmed/chemical/Antibodies, Monoclonal,
http://linkedlifedata.com/resource/pubmed/chemical/Antibodies, Protozoan,
http://linkedlifedata.com/resource/pubmed/chemical/Myosins,
http://linkedlifedata.com/resource/pubmed/chemical/Protozoan Proteins
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pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0031-1820
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
112 ( Pt 5)
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
451-7
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pubmed:dateRevised |
2009-11-19
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pubmed:meshHeading |
pubmed-meshheading:8677134-Actins,
pubmed-meshheading:8677134-Amino Acid Sequence,
pubmed-meshheading:8677134-Animals,
pubmed-meshheading:8677134-Antibodies, Monoclonal,
pubmed-meshheading:8677134-Antibodies, Protozoan,
pubmed-meshheading:8677134-Humans,
pubmed-meshheading:8677134-Microscopy, Fluorescence,
pubmed-meshheading:8677134-Molecular Sequence Data,
pubmed-meshheading:8677134-Myosins,
pubmed-meshheading:8677134-Plasmodium falciparum,
pubmed-meshheading:8677134-Protozoan Proteins
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pubmed:year |
1996
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pubmed:articleTitle |
Contractile protein system in the asexual stages of the malaria parasite Plasmodium falciparum.
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pubmed:affiliation |
Department of Immunology, UMDS, Medical School, Guy's Hospital, London, UK.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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