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| http://purl.uniprot.org/citations/21544597 | http://www.w3.org/2000/01/rdf-schema#comment | "Prolyl oligopeptidase (POP) is a serine endopeptidase which selectively digests a -Pro-X-peptide bond. Our previous study showed that POP mRNA was strongly expressed in the spongiotrophoblast of the mouse placenta at E17.5, suggesting its importance in development. To gain more insight into POP's role during gestation, we investigated its expression using different developmental stages of placenta. As a result of in situ hybridization, we found that localization of POP mRNA changed at E12.5. POP mRNA was strongly expressed in the spongiotrophoblast and labyrinth at E10.5 and E11.5 but thereafter only in the spongiotrophoblast. Immunohistochemistry revealed that POP was present in the parietal trophoblast giant cell, the spongiotrophoblast cell, and the labyrinth at E11.5 but the strong expression in the labyrinth was maintained only in the canal-associated and sinusoidal trophoblast giant cells at E16.5 and E18.5. To determine subcellular distribution of the POP protein, we fractionated the placental extract into cytoplasmic, membrane, and nuclear subfractions. By Western blot analysis, POP was detected in the cytoplasmic and membrane fractions but not in the nuclear fraction at E11.5 and E16.5. Interestingly, the cytoplasmic POP exhibited higher enzymatic activity than the membrane-associated type. These data suggest that the cytoplasmic and membrane-associated POP have distinct roles in different types of placental cells."xsd:string |
| http://purl.uniprot.org/citations/21544597 | http://purl.org/dc/terms/identifier | "doi:10.1007/s10735-011-9329-3"xsd:string |
| http://purl.uniprot.org/citations/21544597 | http://purl.uniprot.org/core/author | "Takahashi T."xsd:string |
| http://purl.uniprot.org/citations/21544597 | http://purl.uniprot.org/core/author | "Matsubara S."xsd:string |
| http://purl.uniprot.org/citations/21544597 | http://purl.uniprot.org/core/author | "Kimura A.P."xsd:string |
| http://purl.uniprot.org/citations/21544597 | http://purl.uniprot.org/core/date | "2011"xsd:gYear |
| http://purl.uniprot.org/citations/21544597 | http://purl.uniprot.org/core/name | "J Mol Histol"xsd:string |
| http://purl.uniprot.org/citations/21544597 | http://purl.uniprot.org/core/pages | "251-264"xsd:string |
| http://purl.uniprot.org/citations/21544597 | http://purl.uniprot.org/core/title | "Localization and subcellular distribution of prolyl oligopeptidase in the mouse placenta."xsd:string |
| http://purl.uniprot.org/citations/21544597 | http://purl.uniprot.org/core/volume | "42"xsd:string |
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