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. 2020 Aug 31;12(9):2464. doi: 10.3390/cancers12092464

Figure 2.

Figure 2

The model of alternative circularization. Multiple circRNAs and linear RNAs can be generated from a single gene locus, via RNA pairing competition. Complementary sequences within individual flanking introns favor linear mRNA formation, while complementary sequences in different flanking introns promote circularization. The competition between these reverse complementary sequences can lead to multiple circRNAs.