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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
Serbp1/4:97735945-97735955-97735897-97735907-+/+ Serbp1 protein_coding +/+ lariat 4:97735945-97735897 48.0 Brown rat
Ahnak/1:215333475-215333491-215327811-215327827-+/+ Ahnak protein_coding +/+ interior 1:215333475-215327811 5664.0 Brown rat
Snx13/6:57528778-57528781-57520894-57520897-+/+ Snx13 protein_coding +/+ canonical (exon-exon) 6:57528778-57520894 7884.0 Brown rat
intergenic/20:3480256-3480274-3505842-3505860--/. intergenic Na -/. intergenic 20:3480274-3505860 25586.0 Brown rat
Ubb/10:47748470-47748473-47748014-47748017-+/+ Ubb protein_coding +/+ interior 10:47748473-47748017 456.0 Brown rat
Plec/7:109772665-109772676-109774642-109774653--/- Plec protein_coding -/- interior 7:109772666-109774643 1977.0 Brown rat
Mkln1/4:61001907-61001908-60991138-60991139-+/+ Mkln1 protein_coding +/+ partial 4:61001908-60991139 10769.0 Brown rat
Ahnak/1:215335307-215335321-215327351-215327365-+/+ Ahnak protein_coding +/+ interior 1:215335321-215327365 7956.0 Brown rat
Rn28s/11:484763-484764-485260-485261--/- Rn28s rRNA -/- interior 11:484763-485260 497.0 Brown rat
Dusp16/4:169322831-169322835-169325311-169325315--/- Dusp16 protein_coding -/- canonical (exon-exon) 4:169322835-169325315 2480.0 Brown rat