div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: A highly α-helical structure protein in sarcoplasmic reticulum membranes src=https:reader035fdocumentorgreader035viewer2022080321575068521a28ab0f07afa019html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1975 Nature Publishing Grouppdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: A highly α-helical structure protein in sarcoplasmic reticulum membranes src=https:reader035fdocumentorgreader035viewer2022080321575068521a28ab0f07afa019html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divp© 1975 Nature Publishing Grouppdiv