<Journal class="Journal" value="FEBS Letters" /> <Page class="#txt" value="217"> <Page-2 class="#txt" value="21" /> </Page> <Volume class="#txt" value="259" /> <Year class="Year" value="1989" /> </Reference> <Author class="Author" value="Penner R" /> <Author class="Author" value="Neher E" /> <Author class="Author" value="Takeshima H" /> <Author class="Author" value="Nishimura S" /> <Author class="Author" value="Numa S" /> <Medline class="Medline" value="2557244" /> <Abstract class="LongText" value="Penner_1989_FEBS.Lett_259