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Class 3 RNase III
 * Class 3 RNases III include the Dicer family of enzymes known to function in RNA interference (RNAi). Class III Rinases are S-Rnases components. It is a component of the self-incompatibility system in Rosaceae, Solanaceae, and Plantaginaceae. They are recruited to cope with various environmental stress scenarios.
 * Dicer enzymes process dsRNA subtrates into small RNA fragments of individual size ranging from 21-27 nucleotides in length. Dicer has an N-terminal helicase/ATPase domain which is followed by another domain of an unknown function. It is centrally positioned PAZ domain and a C-terminal configuration which includes one dsRBD and two RNase III catalytic domains. .  Interactions of Dicer occurs with other proteins, which includes TRBP, PACT, and Ago2. RNAs that are produced by Dicer act as guides for a sequence of particular silencing of cognate genes through RNAi and related pathways.

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