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. 1974 May;71(5):2052-6.
doi: 10.1073/pnas.71.5.2052.

Particle movements in chloroplast membranes: quantitative measurements of membrane fluidity by the freeze-fracture technique

G K Ojakian, P Satir

Particle movements in chloroplast membranes: quantitative measurements of membrane fluidity by the freeze-fracture technique

G K Ojakian et al. Proc Natl Acad Sci U S A. 1974 May.

Abstract

Stacked chloroplast membranes isolated from Chlamydomonas reinhardtii have differentiated particle arrays when examined by freeze-fracture electron microscopy. When the membranes are isolated unstacked, these particle arrays are lost and the fracture faces have a homogeneous appearance. The changes in appearance are due to rearrangement of existing membrane components by lateral particle movements in the plane of the fluid chloroplast membranes, since quantitative measurements demonstrate almost complete conservation of numbers and sizes of membrane particles during experimentally controlled stacking and unstacking.

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