Linear domain organization of RNase R and RNase II proteins. The
CSDs are colored in cyan and blue for CSD1 and CSD2,
respectively, the nuclease domains are in green, the S1 domains are
red, and the low complexity, highly basic region, found in RNase R
only, is in magenta. A, RNase R. RNase R full-length is the
full-length wild-type RNase R protein. RNase RΔCSDs
lacks both CSD1 and CSD2. RNase RΔBasic is missing the
low complexity, highly basic region. RNase RΔS1 is
missing both the S1 domain and the low complexity, highly basic region.
RNase RΔCSDsΔS1 consists of the
nuclease domain alone. B, RNase II. RNase II full-length is
the full-length wild-type RNase II protein. RNase
IIΔCSDsΔS1 contains the nuclease domain
alone.