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Tissue: K562
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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
ABHD2/15:89197761-89197763-89197650-89197652-+/+ ABHD2 protein_coding +/+ interior 15:89197761-89197650 111.0 Human
ABHD5/3:43702520-43702523-43702277-43702280-+/+ ABHD5 protein_coding +/+ interior 3:43702523-43702280 243.0 Human
ABHD5/3:43702582-43702584-43699270-43699272-+/+ ABHD5 protein_coding +/+ partial 3:43702582-43699270 3312.0 Human
ABL1/9:130863036-130863037-130862763-130862764-+/+ ABL1 protein_coding +/+ canonical (exon-exon) 9:130863037-130862764 273.0 Human
ABL1/9:130885432-130885433-130885182-130885183-+/+ ABL1 protein_coding +/+ interior 9:130885433-130885183 250.0 Human
ABL1/9:130885460-130885269-+/+ ABL1 protein_coding +/+ interior 9:130885460-130885269 191.0 Human
ABL1/9:130886568-130886273-+/+ ABL1 protein_coding +/+ interior 9:130886568-130886273 295.0 Human
ABLIM1/10:114431502-114431624--/- ABLIM1 protein_coding -/- interior 10:114431502-114431624 122.0 Human
ABLIM1/10:114431728-114431839--/- ABLIM1 protein_coding -/- interior 10:114431728-114431839 111.0 Human
ABLIM1/10:114435461-114435576--/- ABLIM1 protein_coding -/- interior 10:114435461-114435576 115.0 Human