Lincoln and Joyce have identified an RNA enzyme capable of self-sustained replication.

Viruses could initially adopt DNA as a way to resist RNA degrading enzymes in the host cells.

RNA enzymes, or ribozymes, are found in today's DNA-based life and could be examples of living fossils.

Such an RNA enzyme, capable of self replication in about an hour, has been identified.

Today, nearly 100 RNA enzymes or "ribozymes" have been discovered.

Some transamination activities of the ribosome have been found to be catalyzed by so-called ribozymes (RNA enzymes).

RNA enzymes are known as ribozymes and are now used for gene technology.

Our current natural world no longer uses RNA enzymes that act on their own to perform most biological functions.

The gene-targeting approach uses a specially designed RNA enzyme to inhibit strains of the herpes simplex virus.

RNA enzymes are known as ribozymes and have provided a new tool for gene technology.