3.4.19.3 cytosol - 5829 667884, 681817 3.4.19.3 cytosol activity is high from embryonic day 22 until postnatal Day 9, and afterwards decreases 5829 653412 3.4.19.3 membrane - 16020 682252, 95288, 95299, 95312 3.4.19.3 membrane bound to 16020 95279, 95315 3.4.19.3 membrane synaptosomal 16020 95278, 95279, 95281 3.4.19.3 additional information particulate form shows lower activity levels than the soluble form - 682806 3.4.19.3 soluble - - 668870, 682252, 682806 3.4.19.3 soluble activity is low until postnatal Day 9, with a peak at postnatal Day 2, and the activity increases at postnatal day 15. In later stages there are not significant changes of synaptosomal activity - 653412