Figure 1

Schematic fungal L-rhamnose ( LRA ) gene clusters. (A) Catabolic pathway for L-rhamnose and the gene cluster encoding the corresponding activities in P. stipitis and C. guilliermondii (according to [15]). (B) Location of the hypothetical pathway-specific regulatory gene rhaR (black arrow) in relation to the proposed LRA catabolic genes in yeast and filamentous fungi. The arrows indicate the direction of transcription based on sequence analyses. Homologous genes are indicated using the same colour code. Chr and C indicate chromosome number and contig respectively; α-RHA indicates α-L-rhamnosidase.