FEATURES

FAMILY

DESCRIPTION

Also known as RTCA_SHIBS, rtcA. Catalyzes the conversion of 3'-phosphate to a 2', 3'-cyclic phosphodiester at the end of RNA. The mechanism of action of the enzyme occurs in 3 steps: (A) adenylation of the enzyme by ATP; (B) transfer of adenylate to an RNA-N3'P to produce RNA-N3'PP5'A; (C) and attack of the adjacent 2'-hydroxyl on the 3'-phosphorus in the diester linkage to produce the cyclic end product. The biological role of this enzyme is unknown but it is likely to function in some aspects of cellular RNA processing.

EXTERNAL LINKS

uniprot
enzyme classification

rtcA

RNA 3'-terminal phosphate cyclase

rtcA

Molecular Synopsis