7-methylguanosine cap hypermethylation
Hypermethylation of the 7-(mono)methylguanosine (m(7)G) cap structure at the 2' position of the guanosine residue to convert a mono-methylated cap to a 2,2,7-trimethylguanosine cap structure. This type of cap modification occurs on small nuclear RNAs (snRNAs) and small nucleolar RNAs (snoRNAs) and is dependent on prior guanine-N7 methylation.
GO:0001510
RNA methylation
is_a
GO:0036260
RNA capping
is_a
2,2,7-trimethylguanosine cap formation
exact
TMG cap formation
exact
conversion of m(7)G to m(3)G
exact
hypermethylation of snRNA cap
narrow
hypermethylation of snoRNA cap
narrow
m(7)G cap hypermethylation
exact
snRNA capping
narrow
snoRNA capping
narrow
SPAC2G11.15c