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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Term Information

  • ID: GO_0036261
  • Name: 7-methylguanosine cap hypermethylation
  • Definition: 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.
  • Synonyms:
  • Type:
  • Comment:

VFB Term Json

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            "label": "7-methylguanosine cap hypermethylation"
        },
        "description": [
            "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."
        ],
        "comment": []
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            "label": "RNA methylation"
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    "relationships": [],
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    "anatomy_channel_image": [],
    "pub_syn": [
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            "synonym": {
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                "label": "snoRNA capping",
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