Science, Vol 195, Issue 4277, 495-497
Copyright © 1977 by American Association for the Advancement of Science
Calcium-induced displacement of membrane-associated particles upon aggregation of chromaffin granules
R Schober,
C Nitsch,
U Rinne,
and
SJ Morris
Isolated chromaffin granules incubated in 10 millimolar calcium chloride aggregated, forming contact sites with a pentalaminar membrane structure. These circular attachment sites were free of membrane-associated particles, which accumulated at the periphery. Incubation in 20 millimolar ethylenediaminetetraacetic acid reversed these changes, which are regarded as initial events in the membrane fusion reaction.