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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1997-9-15
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pubmed:databankReference | |
pubmed:abstractText |
A novel intracellular calcium-binding protein from Echinococcus granulosus is described in this work. A cDNA was isolated from a lambdagt11 protoscolex expression library and the deduced amino acid sequence has at least fifteen sequentially repeated twelve-residue repeats that resemble the calcium-binding loop of EF-hands; however, the dodecamer motif has no flanking helices. The cDNA was expressed in Escherichia coli using the pGEX vector, and a recombinant fusion protein (EgCaBP1-GST) was obtained. The recombinant fusion protein binds calcium when assayed with 45Ca. It is possible that the calcium-binding motifs present a secondary structure similar to the parallel beta roll structure described for an alkaline protease from Pseudomonas aeruginosa. A native protein of more than 300 kDa was recognized by an anti-EgCaBP1 monoclonal antibody by Western-blot analysis. Immunohistochemistry using a pool of anti-EgCaBP1-GST mouse sera demonstrated a strong association of the protein with calcareous corpuscles. The possible role of this protein and that of the calcareous corpuscles in the protoscolex are discussed.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Aug
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pubmed:issn |
0006-291X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
18
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pubmed:volume |
237
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
451-6
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:9268732-Amino Acid Sequence,
pubmed-meshheading:9268732-Animals,
pubmed-meshheading:9268732-Calcium-Binding Proteins,
pubmed-meshheading:9268732-Cloning, Molecular,
pubmed-meshheading:9268732-DNA, Complementary,
pubmed-meshheading:9268732-Echinococcus,
pubmed-meshheading:9268732-Escherichia coli,
pubmed-meshheading:9268732-Molecular Sequence Data
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pubmed:year |
1997
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pubmed:articleTitle |
A protein with a novel calcium-binding domain associated with calcareous corpuscles in Echinococcus granulosus.
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pubmed:affiliation |
Centro de Biotecnologia and Departamento de Biotecnologia, Universidade Federal do Rio, Grande do Sul, Porto Alegre, Rio Grande do Sul, 91501-970, Brazil.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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