Fig. 1.
A. Conservation of xylan hydrolase gene clusters in B. ovatus ATCC 8483 and P. bryantii B14. The corresponding genes in the two bacteria are connected by dashed lines, and the per cent amino acid identity between the gene products is indicated. Open reading frame numbers are indicated within each of the genes. N.S., not significant amino acid identity. A map of insertional mutants constructed in the chromosome of B. ovatus ATCC 8483, as described in the text, is indicated below the corresponding genes.
B. Phenotypes associated with the insertional mutants indicated in (A) and described in the text. Data are derived from Weaver et al. (1992). OD, optical density.