The exon numbers in SpliceCenter does not match NCBI exon numbering. Why?
The SpliceCenter database build process includes full length transcripts from both RefSeq and GenBank. NCBI exon numbering is done using only RefSeq transcripts which do not always include all the exons found when GenBank transcripts are analyzed. SpliceCenter numbers exons based on evidence from both sources. We do, however, record NCBI exon numbering. If you examine refseq transcripts (they have accession numbers starting with ‘NM_’), you can see the NCBI exon numbering. Use your mouse to point at an exon in a RefSeq transcript. The mouse over box that pops up will show both the SpliceCenter exon number and the NCBI exon number.
