FIG. 1.

Restriction enzyme map of 6.9-kb fragment containing arfA and bgaA and structure of subclones. Clones coding (++) or not coding (−) for α-l-arabinofuranosidase and α-l-arabinopyranosidase activities are indicated. The activities were determined by using MUAf and MUAp as the substrates. The pin-like symbols indicate predicted palindromes. p1, 2.7-kb fragment between the NheI and ClaI sites; p2, 2.6-kb fragment between the EcoRI and HincII sites; p3, 2.0-kb fragment between the HincII and ClaI sites.