Abstract
Hexosaminidases A and B from human kidney cortex were purified to homogeneity (concanavalin A affinity chromatography, ion-exchange chromatography and gel filtration). The yield of homogeneous isoenzymes improved about 20-fold, giving preparations of hexosaminidases A and B with specific activities of about 200 and 325 units/mg of protein respectively. The kinetic and structural properties of kidney hexosaminidase isoenzymes were studied and compared with the hexosaminidase isoenzymes from human placenta. The amino acid composition of hexosaminidase A was significantly different from that of hexosaminidase B. In the event of success in developing enzyme-replacement therapy for Tay-Sachs and Sandhoff's diseases, this modified procedure can furnish larger amounts of homogeneous isoenzymes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 49-53 |
| Number of pages | 5 |
| Journal | Biochemical Journal |
| Volume | 165 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1977 |
| Externally published | Yes |
ASJC Scopus subject areas
- Biochemistry
- Molecular Biology
- Cell Biology