Genome organization of African cassava mosaic virus (Townsend et al., 1985). Open reading frames are shown both in the strand in the virus particles (+ strand) and in the complementary strand (- strand) of DNA-1 (1) and DNA-2 (2). Open reading frames with counterparts in bean golden mosaic and tomato golden mosaic viruses are shaded. Figures indicate the M. Wt (x l0-3) of putative gene products. Nucleotides 1-193 comprise the common sequence. Possible transcription initiation and polyadenylation signals are indicated by open and closed triangles, respectively.