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Species: Brown rat
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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
Stk3/7:68157873-68157873-68173457-68173457--/- Stk3 protein_coding -/- canonical (exon-exon) 7:68157873-68173457 15584.0 Brown rat
Hbb/1:167643032-167643033-167649114-167649115--/- Hbb protein_coding -/- interior 1:167643032-167649114 6082.0 Brown rat
Rn28s/11:484761-484765-485629-485633--/- Rn28s rRNA -/- interior 11:484761-485629 868.0 Brown rat
intergenic/1:212515189-212515191-212515242-212515244--/. intergenic Na -/. intergenic 1:212515191-212515244 53.0 Brown rat
intergenic/1:207336726-207336728-207363784-207363786--/. intergenic Na -/. intergenic 1:207336728-207363786 27058.0 Brown rat
intergenic/1:212517374-212517381-212517428-212517435--/. intergenic Na -/. intergenic 1:212517381-212517435 54.0 Brown rat
Ahnak/1:215336675-215336677-215335322-215335324-+/+ Ahnak protein_coding +/+ interior 1:215336675-215335322 1353.0 Brown rat
Lmbr1/4:6710207-6710222-6708440-6708455-+/+ Lmbr1 protein_coding +/+ interior 4:6710222-6708455 1767.0 Brown rat
Rn28s/11:484766-484766-485614-485614--/- Rn28s rRNA -/- interior 11:484766-485614 848.0 Brown rat
Pank1/1:241770044-241770045-241770397-241770398--/- Pank1 protein_coding -/- canonical (exon-exon) 1:241770045-241770398 353.0 Brown rat