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| Content Provider | PubMed Central |
|---|---|
| Author | Robinson, Simon P. |
| Abstract | The presence of a nonspecific acid phosphatase which had high activity with 3-phosphoglycerate as substrate has recently been reported in Spinacia oleracea L. chloroplasts (Mulligan, Tolbert 1980 Plant Physiol 66: 1169-1173). The subcellular localization of this activity has been reinvestigated by differential centrifugation of spinach leaf homogenates. The fraction sedimenting at 1,200g comprised mostly intact chloroplasts and contained more than half the chlorophyll but only 5% of the 3-phosphoglycerate phosphatase activity present in the homogenate. The fraction of the homogenate pelleting at 5,000g contained broken chloroplasts and had considerable 3-phosphoglycerate phosphatase activity. Further purification of the 1,200g pellet fraction on a Percoll step gradient yielded greater than 95% intact chloroplasts, yet the phosphatase activity was reduced more than 15-fold on a chlorophyll basis by this purification. |
| Starting Page | 645 |
| File Format | |
| ISSN | 15322548 |
| e-ISSN | 15322548 |
| Journal | Plant Physiology |
| Issue Number | 3 |
| Volume Number | 70 |
| Language | English |
| Publisher Date | 1982-09-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Physiology Plant Science |
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