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Tissue: A549
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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
ABCC3/17:50678024-50678025-50677920-50677921-+/+ ABCC3 protein_coding +/+ interior 17:50678024-50677920 104.0 Human
ABCC3/17:50678048-50678052-50677901-50677905-+/+ ABCC3 protein_coding +/+ interior 17:50678052-50677905 147.0 Human
ABCC3/17:50691363-50691363-50691247-50691247-+/+ ABCC3 protein_coding +/+ interior 17:50691363-50691247 116.0 Human
ABCC3/17:50691364-50691373-50691248-50691257-+/+ ABCC3 protein_coding +/+ interior 17:50691364-50691248 116.0 Human
ABCC3/17:50691373-50691376-50691268-50691271-+/+ ABCC3 protein_coding +/+ interior 17:50691373-50691268 105.0 Human
ABCC3/17:50691497-50691498-50691248-50691249-+/+ ABCC3 protein_coding +/+ interior 17:50691497-50691248 249.0 Human
ABCC3/17:50691497-50691498-50691364-50691365-+/+ ABCC3 protein_coding +/+ interior 17:50691497-50691364 133.0 Human
ABCC3/17:50691499-50691507-50691250-50691258-+/+ ABCC3 protein_coding +/+ interior 17:50691499-50691250 249.0 Human
ABCC4/13:95021513-95021520-95021642-95021649--/- ABCC4 protein_coding -/- interior 13:95021513-95021642 129.0 Human
ABCD4/14:74286384-74286386-74286493-74286495--/- ABCD4 protein_coding -/- interior 14:74286386-74286495 109.0 Human