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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
1500004A13Rik/3:88723975-88723981-88728013-88728019--/- 1500004A13Rik lncRNA -/- interior 3:88723978-88728016 4038.0 Mouse
1500004A13Rik/3:88723981-88723987-88728019-88728025--/- 1500004A13Rik lncRNA -/- interior 3:88723981-88728019 4038.0 Mouse
1500004A13Rik/3:88725470-88725474-88725745-88725749--/- 1500004A13Rik lncRNA -/- interior 3:88725474-88725749 275.0 Mouse
1500004A13Rik/3:88731683-88731684-88731795-88731796--/- 1500004A13Rik lncRNA -/- interior 3:88731684-88731796 112.0 Mouse
1500011B03Rik/5:114946330-114946336-114946663-114946669--/- 1500011B03Rik protein_coding -/- interior 5:114946330-114946663 333.0 Mouse
1500011B03Rik/5:114946716-114946721-114947279-114947284--/- 1500011B03Rik protein_coding -/- interior 5:114946721-114947284 563.0 Mouse
1500011B03Rik/5:114947300-114947301-114951898-114951899--/- 1500011B03Rik protein_coding -/- interior 5:114947300-114951898 4598.0 Mouse
1500011B03Rik/5:114950958-114950968-114961094-114961104--/- 1500011B03Rik protein_coding -/- interior 5:114950958-114961094 10136.0 Mouse
1500011B03Rik/5:114951839-114951840-114960785-114960786--/- 1500011B03Rik protein_coding -/- interior 5:114951840-114960786 8946.0 Mouse
1500011B03Rik/5:114960711-114960721-114951191-114951201-+/- 1500011B03Rik protein_coding +/- antisense 5:114960711-114951191 9520.0 Mouse