PMID: 3082375Feb 1, 1986Paper

Intracellular pathway and kinetics of protein secretion in the coagulating gland of the mouse

Biology of Reproduction
L H Samuel, C J Flickinger


The coagulating gland of male rodents is part of the prostatic complex. Various mechanisms of secretion have been postulated, in part because organelles commonly involved in the secretory process possess unusual features, such as extreme distension of the rough endoplasmic reticulum. In the present study, the pathway, kinetics, and mode of secretion in the coagulating gland of the mouse were studied by electron microscope autoradiography at intervals between 5 min and 8 h after administration of 3H-threonine. The percentage of grains associated with the rough endoplasmic reticulum was initially high and generally decreased throughout the experiment, while a pronounced rise in the proportion of grains associated with the Golgi apparatus and secretory granules was observed 6 h after injection of precursor. In addition, there was a smaller elevation in the percentage of grains over the Golgi apparatus and secretory granules between 1 and 4 h, and radioactive material first reached the lumen of the gland 4 h after injection of the precursor. Although the general pathway of intracellular transport of secretory protein resembles that in other cells, the results indicate that there are several unusual aspects to the secretory process ...Continue Reading


Aug 1, 1992·Comparative Biochemistry and Physiology. B, Comparative Biochemistry·D A Hudson

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