FIG. 1.

Nondenaturing gradient (4 to 30%) polyacrylamide gel analysis of purified native XylA and C. Lanes: M, molecular mass markers (in kDa); 1, XylC (5 μg); 2, XylA (2 μg). Enzymes were purified by Sepharose column chromatography and gel filtration as presented in Table 2. XylA and XylC were separated during phenyl-Sepharose chromatography.