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Species: Mouse
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circRNA ID Gene Gene Type Strand (circRNA/Gene)
circRNA Type i

The back-fusion junctions (BFJs) of circRNAs from genic regions may have three possible positions relative to the nearest exon-intron boundaries of their cognate linear transcripts, giving rise to three circRNA subtypes:

(1) canonical (or completely boundary) circRNAs with both BFJs aligning to exon-intron boundaries;

(2) half interior (or half boundary) circRNAs with one, but not both, of the BFJs aligning to exon-intron boundaries;

(3) complete interior (or non-boundary) circRNAs with both junctions appearing inside of exons or introns.

Lariats are byproducts of splicing and can be regarded as variants of canonical circRNAs; for clarity, we list lariats separately here.

Intergenic circRNAs, derived from intergenic regions that often encode poorly annotated noncoding transcripts, can be considered a new distinct subtype of their own.

We collectively refer to complete interior, half interior, and intergenic circRNAs as noncanonical circRNAs (nc-circRNAs) to distinguish them from canonical circRNAs (c-circRNAs).

CircRNA Types Diagram
Position Length Species
1110038B12Rik/17:35169474-35169474-35169674-35169674--/- 1110038B12Rik lncRNA -/- lariat 17:35169474-35169674 200.0 Mouse
1110038B12Rik/17:35169475-35169476-35169673-35169674--/- 1110038B12Rik lncRNA -/- lariat 17:35169475-35169673 198.0 Mouse
1110038B12Rik/17:35169680-35169681-35169914-35169915--/- 1110038B12Rik lncRNA -/- interior 17:35169680-35169914 234.0 Mouse
1110038B12Rik/17:35169759-35169766-35169527-35169534-+/- 1110038B12Rik lncRNA +/- antisense 17:35169766-35169534 232.0 Mouse
1110038B12Rik/17:35169768-35169771-35169633-35169636-+/- 1110038B12Rik lncRNA +/- antisense 17:35169768-35169633 135.0 Mouse
1110038B12Rik/17:35169934-35169936-35170079-35170081--/- 1110038B12Rik lncRNA -/- interior 17:35169934-35170079 145.0 Mouse
1110038B12Rik/17:35170208-35170208-35170087-35170087-+/- 1110038B12Rik lncRNA +/- antisense 17:35170208-35170087 121.0 Mouse
1110038B12Rik/17:35170814-35170815-35171180-35171181--/- 1110038B12Rik lncRNA -/- interior 17:35170815-35171181 366.0 Mouse
1110038B12Rik/17:35170927-35170928-35171113-35171114--/- 1110038B12Rik lncRNA -/- lariat 17:35170927-35171113 186.0 Mouse
1110038F14Rik/15:76833021-76833022-76832816-76832817-+/+ 1110038F14Rik protein_coding +/+ interior 15:76833022-76832817 205.0 Mouse