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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
Zranb1/1:197172859-197172860-197170340-197170341-+/+ Zranb1 protein_coding +/+ partial 1:197172860-197170341 2519.0 Brown rat
intergenic/20:3441431-3441443-3483669-3483681--/. intergenic Na -/. intergenic 20:3441433-3483671 42238.0 Brown rat
Lamtor2/2:176306403-176306409-176306491-176306497--/- Lamtor2 protein_coding -/- interior 2:176306409-176306497 88.0 Brown rat
Atf1/7:133267738-133267738-133267687-133267687-+/+ Atf1 protein_coding +/+ interior 7:133267738-133267687 51.0 Brown rat
intergenic/1:207337549-207337551-207356851-207356853--/. intergenic Na -/. intergenic 1:207337551-207356853 19302.0 Brown rat
Crebrf/10:16938305-16938308-16944384-16944387--/- Crebrf protein_coding -/- canonical (exon-exon) 10:16938308-16944387 6079.0 Brown rat
intergenic/11:243108-243112-279877-279881--/. intergenic Na -/. intergenic 11:243112-279881 36769.0 Brown rat
Metazoa_SRP/6:93373139-93373140-93372988-93372989-+/- Metazoa_SRP misc_RNA +/- antisense 6:93373139-93372988 151.0 Brown rat
Rit1/2:176492621-176492631-176492553-176492563-+/+ Rit1 protein_coding +/+ interior 2:176492631-176492563 68.0 Brown rat
intergenic/11:244995-245013-281766-281784--/. intergenic Na -/. intergenic 11:244995-281766 36771.0 Brown rat