COLUMN 1: ID of circRNA in PlantcircBase. It is made up of three parts, species_RNA type_number of the circRNA. For the example of osa_circ_034078, "osa" is short for Oryza sativa; "circ" represents circRNA; "034078" represents the number of the circRNA in PlantcircBase.
COLUMN 2: Name of the circRNA used in other papers.
COLUMN 3: The organism from which the circRNA was identified.
COLUMN 4: The stsrt site of the circRNA (1-based).
COLUMN 5: The end site of the circRNA (1-based).
COLUMN 6: Type of circRNA based on its genomic origin, e.g. exonic, intronic and intergenic.
COLUMN 7: Method used to identify circRNAs.
COLUMN 8: The host gene from which the circRNA is derived.
COLUMN 9: the strand on which the host gene resides.
COLUMN 10: In this study, circRNAs with overlapping sequences or from the same parent gene are considered as alternatively spliced isoforms.
COLUMN 11: Left side sequence of a back-splicing site.
COLUMN 12: Right side sequence of a back-splicing site.
COLUMN 13: The total number of reads that support the junction of the circRNA. The supporting reads in different tissues (experiments) are separated by "/".
COLUMN 14: Indicating the tissue from which the circRNA was identified. Tissues used in different experiments were separated by "/" based on the order of supporting reads showing in the previous item.
COLUMN 15: It shows whether the splicing sites are on the boundary of exons or not. For example, "Yes-No" represents the donor splicing site is on the exon boundary and the accepter is not on the exon boundary.
COLUMN 16: The splicing signals of the circRNA. For example, "AG-GT" represents that the donor and the accepter splicing signal is "AG" and "GT", respectively.
COLUMN 17: "Yes" represents Sanger sequencing has been performed to valid the back-splicing site, "No" represents the opposite, "NA" represents "not available".
COLUMN 18: PCR primers (including convergent and divergent primers) used in back-splicing validation.
COLUMN 19: Back-splicing site valided or not.
COLUMN 20: "Yes" represents Sanger sequencing has been performed to valid the full length of circRNA, "No" represents the opposite.
COLUMN 21: PCR primers used in validation of the full length circRNA.
COLUMN 22: Full length sequences valided or not.
COLUMN 23: Genomic sequence of the circRNA.
COLUMN 24: The number of exons that cover the genomic sequence of the circRNA.
COLUMN 25: The study in which the circRNA was first reported.
COLUMN 26: miRNAs that are predicted to bind the circRNA (in other words, the circRNA acts as a potential miRNA sponge). Only the top three miRNAs of a circRNA are listed here if more than three are predicted.
COLUMN 27: IDs of miRNAs that on miRBase.
COLUMN 28: The target mRNAs of the miRNA listed in the item “Sponge-miRNA”. Only the top three target mRNAs are shown if more than three are predicted.
COLUMN 29: The sequence of a circRNA based on assembly using circseq-cup (Ye et al., 2016) or Sanger sequencing.
COLUMN 30: The number of exons that cover the assembly circRNA sequence.
COLUMN 31: Conserved circRNAs in other plants based on their back-splicing sequence similarity and parent genes.