FIG. 4.

Gene expression profile of lambdoid prophage Gifsy-1 after mitomycin C treatment. Numbers are from the STM annotation, including some homologues in Gifsy-2 (16). Names are hypothetical, based on homology with other phages. The expression ratios are the ratios compared with an untreated control and are log₂ transformed. Red, increase; green, decrease; black, no change. (A) Genes listed in order of position on the serovar Typhimurium chromosome. (B) Hierarchical clustering of phage gene expression as determined by GENESIS. Putative gene expression cluster assignments are indicated. Cluster E, early; cluster DE, delayed early; cluster M, middle; cluster L, late; rep, replication.