Location of Chlorophyll in Rhodospirillum rubrum

Abstract
Holt, Stanley C. (University of California, Davis), and Allen G. Marr . Location of chlorophyll in Rhodospirillum rubrum . J. Bacteriol. 89: 1402–1412. 1965.—If cells of Rhodospirillum rubrum are broken by sonic and ballistic disruption, the chlorophyll is not found in discrete cytoplasmic structures, but is located in a more extensive structure of the cell, the intracytoplasmic membrane. Direct electron microscopy of sonically disrupted cells of R. rubrum and stereo-electron microscopy of osmotically shocked cells reveal the presence of a tubular network of internal membranes originating from the periphery of the cell.