2.4.1.18 amyloplast - 9501 718799 2.4.1.18 amyloplast developing 9501 -, 736465 2.4.1.18 cytoplasm - 5737 -, 756956 2.4.1.18 extracellular - - 705085 2.4.1.18 additional information more than 95% of the recombinant enzyme is present within the cells as insoluble but catalytically active aggregate. Heat treatment of the aggregate suspension at 70°C results in about 30% solubilization of the enzyme activity - 636942 2.4.1.18 plastid isoform SBE A is found predominantly in the soluble phase of the tuber extracts, indicating a stromal location within the plastid 9536 636947 2.4.1.18 soluble - - -, 701786 2.4.1.18 soluble in the soluble fraction, the amount of SBE IIa protein is two to three fold higher than SBIIb - 660327 2.4.1.18 soluble SBE2 is present in the soluble fraction, SBE1 is associated with the starch granule fraction - 636954 2.4.1.18 soluble the purified full-length enzyme is poorly soluble and forms aggregates, which are inactive, at concentrations above 1 mg/ml. In contrast, the truncated form can be concentrated to 6 mg/ml without a visible sign of aggregation or loss of activity on concentration - 636953 2.4.1.18 starch grain SBE2 is present in the soluble fraction, SBE1 is associated with the starch granule fraction 43036 636954 2.4.1.18 starch grain soluble isoforms of starch synthase and starch-branching enzyme also occur within starch granules in developing pea embryos 43036 660177 2.4.1.18 starch grain two to three fold more SBE IIb protein amount than SBE IIa 43036 660327