RNase R
Encyclopedia
RNase R is an 3'-5' exoribonuclease
closely related to RNase II, which has been shown to be involved in mRNA degradation in bacteria. RNase R has homologues
in many other organisms. When a part of another larger protein has a domain
that is very similar to RNase R, this is called an RNase R domain.
Exoribonuclease
An exoribonuclease is an exonuclease ribonuclease, which are enzymes that degrade RNA by removing terminal nucleotides from either the 5' end or the 3' end of the RNA molecule...
closely related to RNase II, which has been shown to be involved in mRNA degradation in bacteria. RNase R has homologues
Homology (biology)
Homology forms the basis of organization for comparative biology. In 1843, Richard Owen defined homology as "the same organ in different animals under every variety of form and function". Organs as different as a bat's wing, a seal's flipper, a cat's paw and a human hand have a common underlying...
in many other organisms. When a part of another larger protein has a domain
Protein domain
A protein domain is a part of protein sequence and structure that can evolve, function, and exist independently of the rest of the protein chain. Each domain forms a compact three-dimensional structure and often can be independently stable and folded. Many proteins consist of several structural...
that is very similar to RNase R, this is called an RNase R domain.