TABLE 4.

Binding P. aeruginosa strain 385 chitinase to insoluble polysaccharides^a

Substrate	% Chitinase activity bound
Purified crab shell chitin	100
Chitin azure	100
Colloidal chitin	100
Chitosan	25
Xylan	42
Lichenan	88
Heparin agarose	35
Microgranular cellulose	81
N,N′-Diacetylchitobiose agarose	36

^aChitinase activity in the supernatant was measured using 4-nitrophenyl-β-d-N,N′-diacetylchitobiose.