7-methylguanosine cap hypermethylation [GO_0036261]

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.
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7-methylguanosine cap hypermethylation

ID: GO_0036261

Class

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.

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Classification

Alternative Names

Synonym Scope Reference
snoRNA capping narrow synonym rl
hypermethylation of snoRNA cap narrow synonym mah
snRNA capping narrow synonym rl
hypermethylation of snRNA cap narrow synonym mah
2,2,7-trimethylguanosine cap formation exact synonym 11983179
m(7)G cap hypermethylation exact synonym bf
conversion of m(7)G to m(3)G exact synonym 11983179
TMG cap formation exact synonym 11983179

References