Electron Microscopic and Biochemical Characterization of Fraction I Protein

Science  17 Dec 1965:
Vol. 150, Issue 3703, pp. 1598-1601
DOI: 10.1126/science.150.3703.1598


Electron micrographbs of high resolution have been obtained from fraction I protein of Chinese cabbage leaves. The protein, which has ribulose-1,5-diphosphate carboxylase activitY, appear to be a cube swth edge of about 120 angstroms. Substrtucture canl be seen in individual particles, conlsistent with a model having 24 subunits, the number prescribed by the available physical and chlemical data.