Reaction catalyzed by RNA 3'-terminal-phosphate cyclase (ATP) (6.5.1.4), RNA 3'-terminal-phosphate cyclase (GTP) (6.5.1.5)
+
=
+
+
GTP
+
RNA 3'-terminal-phosphate
=
GMP
+
diphosphate
+
RNA terminal-2',3'-cyclic-phosphate
