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Tissue: HT-29
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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
ABHD2/15:89088973-89088978-89088611-89088616-+/+ ABHD2 protein_coding +/+ interior 15:89088978-89088616 362.0 Human
ABHD2/15:89155533-89155534-89113723-89113724-+/+ ABHD2 protein_coding +/+ canonical (exon-exon) 15:89155533-89113723 41810.0 Human
ABHD2/15:89196411-89196411-89196181-89196181-+/+ ABHD2 protein_coding +/+ interior 15:89196411-89196181 230.0 Human
ABHD2/15:89200353-89200358-89200224-89200229-+/+ ABHD2 protein_coding +/+ interior 15:89200353-89200224 129.0 Human
ABHD2/15:89200472-89200475-89200278-89200281-+/+ ABHD2 protein_coding +/+ interior 15:89200472-89200278 194.0 Human
ABHD2/15:89201405-89201407-89201256-89201258-+/+ ABHD2 protein_coding +/+ interior 15:89201405-89201256 149.0 Human
ABHD2/15:89201893-89201895-89201773-89201775-+/+ ABHD2 protein_coding +/+ interior 15:89201895-89201775 120.0 Human
ABHD2/15:89202173-89202175-89201216-89201218-+/+ ABHD2 protein_coding +/+ interior 15:89202173-89201216 957.0 Human
ABI1/10:26753161-26753169-26753278-26753286--/- ABI1 protein_coding -/- interior 10:26753161-26753278 117.0 Human
ABI1/10:26758975-26758980-26759178-26759183--/- ABI1 protein_coding -/- interior 10:26758975-26759178 203.0 Human