FIG. 1.

Schematic representation of the chromosomal xyn region from T. thermosulfurigenes EM1; DNA fragments cloned on plasmids pCT15, pCT1521, pCT1516, pCT16, and pCT1621; and the domain structures of XynA and XynA derivatives encoded on the plasmids. S, signal peptide; XDA, xylanase domains A; GHF10, catalytic domain of glycosyl hydrolase family 10; CBD, cellulose-binding domains; SL, SLH domains. Restriction sites in pUC18 (thin line) and the inserted gene fragments (thick line) are indicated.