Reports

Quantasome: Size and Composition

Science  22 May 1964:
Vol. 144, Issue 3621, pp. 1009-1011
DOI: 10.1126/science.144.3621.1009

Abstract

The quantasome as seen in a two-dimensional crystalline array is 185 Å long, 155 Å wide, and 100 Å thick. The surface of the quantasome appears to contain four or more subunits. The molecular weight, determined from volume and density measurements, is 2 x 106 This is twice the minimum molecular weight calculated from the manganese content and corresponds to a chlorophyll content of 230 chlorophyll molecules per quantasome.