Fig. 4.

ars activity of S. pombe intergenes. (A) We tested 26 consecutive intergenes in a 68-kb contig in chromosome 2 for ars activity in the standard assay. Intergenes are represented as boxes and marked with numbers. Red, intergenes active as monomers; green, intergenes active as dimers; blue, intergenes with no detectable activity. The activity of each intergene is given in Table 1. (B) ars activity of intergenes as a function of length and composition. The 26 intergenes are divided into three groups according to whether they are active as monomers or dimers or are inactive. The color scheme is as in A.