TABLE 3.
Adsorption of P. cinnabarinus CDH I and CDH II to polysaccharides
| Polysaccharide | Remaining activity in the supernatant (%)a
|
|
|---|---|---|
| CDH I | CDH II | |
| Avicel cellulose | 66 | 41 |
| Bacterial cellulose | 61 | 37 |
| Whatman CF 11 cellulose | 81 | 90 |
| Xylan | 102 | 96 |
| Starch | 103 | 99 |
| Chitin | 100 | 98 |
| Control | 100 | 100 |
CDH I (0.5 U/ml) or CDH II (0.5 U/ml) sodium was incubated with 1 mg of a polysaccharide in 50 mM sodium acetate (pH 4.5) in a 1,000-μl (total volume) reaction mixture at 25°C. After 1 h of incubation with constant agitation, the polysaccharides were removed by centrifugation, and the CDH activities in the supernatant were determined by using the standard DCPIP assay. Control reaction mixtures contained no polysaccharide. The values are the means based on duplicate values from three independent experiments; the maximum sample mean deviation from the values shown was 5%.