PMC:3248852 / 26450-27261 JSONTXT

{"target":"http://pubannotation.org/docs/sourcedb/PMC/sourceid/3248852","sourcedb":"PMC","sourceid":"3248852","source_url":"http://www.ncbi.nlm.nih.gov/pmc/3248852","text":"Cation binding to yolk platelet phosvitin\nIn addition to non-heme iron [23], yolk phosvitin also contains Ca2+, Mg2+, Na+ and K+ [11]. Partially relaxed 23Na Fourier transform NMR spectra revealed the existence of at least two major intracellular compartments of NMR-visible Na+ [35]. A large fraction of the Rana oocyte Na+ was NMR-invisible and could be recovered in the yolk platelets [35]. During the first meiotic division there is a net increase in NMR-visible Na+; by completion of the second meiotic division (following fertilization), about 70% of the total Na+ becomes NMR-visible. Thus, phosvitin not only serves as a site for energy storage, but also as a storage site for iron and other ions essential for embryonic development in ponds and streams that contain little dissolved salts and minerals.","divisions":[{"label":"Title","span":{"begin":0,"end":41}}],"tracks":[{"project":"2_test","denotations":[{"id":"22054214-14220729-9450448","span":{"begin":72,"end":74},"obj":"14220729"},{"id":"22054214-3874869-9450449","span":{"begin":280,"end":282},"obj":"3874869"},{"id":"22054214-3874869-9450450","span":{"begin":389,"end":391},"obj":"3874869"}],"attributes":[{"subj":"22054214-14220729-9450448","pred":"source","obj":"2_test"},{"subj":"22054214-3874869-9450449","pred":"source","obj":"2_test"},{"subj":"22054214-3874869-9450450","pred":"source","obj":"2_test"}]},{"project":"AnEM_full-texts","denotations":[{"id":"T1","span":{"begin":18,"end":31},"obj":"Cell"},{"id":"T2","span":{"begin":77,"end":81},"obj":"Developing_anatomical_structure"},{"id":"T3","span":{"begin":314,"end":320},"obj":"Cell"},{"id":"T4","span":{"begin":373,"end":387},"obj":"Cell"},{"id":"T5","span":{"begin":719,"end":728},"obj":"Developing_anatomical_structure"},{"id":"T6","span":{"begin":233,"end":259},"obj":"Cellular_component"}],"attributes":[{"subj":"T1","pred":"source","obj":"AnEM_full-texts"},{"subj":"T2","pred":"source","obj":"AnEM_full-texts"},{"subj":"T3","pred":"source","obj":"AnEM_full-texts"},{"subj":"T4","pred":"source","obj":"AnEM_full-texts"},{"subj":"T5","pred":"source","obj":"AnEM_full-texts"},{"subj":"T6","pred":"source","obj":"AnEM_full-texts"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"2_test","color":"#9f93ec","default":true},{"id":"AnEM_full-texts","color":"#a0ec93"}]}]}}