A dedicated diribonucleotidase resolves a key bottleneck for the terminal step of RNA degradation.

RNA exonuclease 2 homolog,Small fragment nuclease

MAAGESMAQRMVWVDLEMTGLDIEKDQIIEMACLITDSDLNILAEGPNLIIKQPDELLDSMSDWCKEHHGKSGLTKAVKE
STITLQQAEYEFLSFVRQQTPPGLCPLAGNSVHEDKKFLDKYMPQFMKHLHYRIIDVSTVKELCRRWYPEEYEFAPKKAA
SHRALDDISESIKELQFYRNNIFKKKIDEKKRKIIENGENEKTVS

0.2 M sodium malonate (pH 5.5) and 15-20% polyethylene glycol 3350, 25% gylcerol

National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

3'-5' exoribonuclease, RNA BINDING PROTEIN, rna binding protein-rna complex