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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
1110038F14Rik/15:76834714-76834717-76832862-76832865-+/+ 1110038F14Rik protein_coding +/+ interior 15:76834714-76832862 1852.0 Mouse
1110038F14Rik/15:76834902-76834904-76834595-76834597-+/+ 1110038F14Rik protein_coding +/+ interior 15:76834904-76834597 307.0 Mouse
1110059G10Rik/9:122777992-122777995-122778115-122778118--/- 1110059G10Rik protein_coding -/- interior 9:122777992-122778115 123.0 Mouse
1110065P20Rik/4:124743539-124743544-124743675-124743680--/- 1110065P20Rik protein_coding -/- interior 4:124743539-124743675 136.0 Mouse
1110065P20Rik/4:124743599-124743605-124743469-124743475-+/- 1110065P20Rik protein_coding +/- antisense 4:124743599-124743469 130.0 Mouse
1500002C15Rik/4:155817864-155817869-155817968-155817973--/- 1500002C15Rik lncRNA -/- interior 4:155817869-155817973 104.0 Mouse
1500002C15Rik/4:155817992-155817994-155818122-155818124--/- 1500002C15Rik lncRNA -/- interior 4:155817994-155818124 130.0 Mouse
1500004A13Rik/3:88707173-88707174-88707307-88707308--/- 1500004A13Rik lncRNA -/- interior 3:88707173-88707307 134.0 Mouse
1500004A13Rik/3:88707188-88707192-88707306-88707310--/- 1500004A13Rik lncRNA -/- interior 3:88707188-88707306 118.0 Mouse
1500004A13Rik/3:88707189-88707191-88707305-88707307--/- 1500004A13Rik lncRNA -/- interior 3:88707189-88707305 116.0 Mouse