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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
intergenic/1:212517423-212517424-212517487-212517488--/. intergenic Na -/. intergenic 1:212517423-212517487 64.0 Brown rat
intergenic/11:272483-272483-273331-273331--/. intergenic Na -/. intergenic 11:272483-273331 848.0 Brown rat
Ubc/12:36904325-36904338-36904097-36904110-+/+ Ubc protein_coding +/+ interior 12:36904336-36904108 228.0 Brown rat
Ubc/12:36905080-36905085-36902800-36902805-+/+ Ubc protein_coding +/+ interior 12:36905083-36902803 2280.0 Brown rat
Ubc/12:36904097-36904110-36903413-36903426-+/+ Ubc protein_coding +/+ interior 12:36904097-36903413 684.0 Brown rat
intergenic/1:212515180-212515186-212515235-212515241--/. intergenic Na -/. intergenic 1:212515186-212515241 55.0 Brown rat
Ubc/12:36904153-36904155-36902329-36902331-+/+ Ubc protein_coding +/+ interior 12:36904153-36902329 1824.0 Brown rat
Gigyf2/9:95504817-95504821-95487793-95487797-+/+ Gigyf2 protein_coding +/+ canonical (exon-exon) 9:95504821-95487797 17024.0 Brown rat
Ubc/12:36905009-36905022-36903185-36903198-+/+ Ubc protein_coding +/+ interior 12:36905022-36903198 1824.0 Brown rat
Ubb/10:47748017-47748022-47747561-47747566-+/+ Ubb protein_coding +/+ interior 10:47748017-47747561 456.0 Brown rat