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Quick-freeze deep-etch image of an unfixed and fractured
mitochondrion. The tubular cristae average 50 nm in diameter. Each
cristae bears a helically arranged double row of particles with the
particles spaced at 12 nm along this zipper-like arrangement. The
cristae themselves assume a helical shape and the zipper array remains
on the outside curve of the helix. In in situ fractures the 2
enclosing membranes lie close together. Crystals of unknown
composition are often found in the mitochondria. EM taken on 2/15/88
by C. Schroeder with Zeiss 10A TEM. Neg. 40,500X. Bar = 0.1µm.
Published in J. Cell Biol. 108:2233-2240, 1989.
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