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. 2017 Nov 6;46(Database issue):D221–D228. doi: 10.1093/nar/gkx1031

Table 2. Data types used in CCDS manual curation decisions.

Data type Curation decisions
RNA-seq (24) Determination of transcript or gene structure or extent, inferred exon combination, splice variant existence
CAGE tags (25) Determination of transcription start sites, 5′ UTR extension
H3K4me3 methylation Determination of general 5′ completeness of transcripts or genes
CpG islands Determination of general 5′ completeness of transcripts or genes (in conjunction with other data)
Long read transcriptome data Splice variants; especially useful for genes with poor INSDC transcript support
Proteomics Determination of gene biotype, novel exons, novel protein termini.
Ribosome profiling Determination of translation start codons or the coding status of genes with questionable biotypes
Conservation in other species Determination of gene biotype, annotation of proteins with little or no data about gene function, determination of translation start codon
Conserved protein domains Determination of gene biotype, annotation of proteins with little or no data about gene function
PhyloCSF Determination of gene biotype, annotation of uncharacterized proteins
polyA-seq (26) Determination of 3′ completeness