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Annotation files include positional information for the nucleotide location of known coding exons (CDS), untranslated regions (UTR) or any other DNA features known for the input sequence contigs. zPicture reconstitutes gene annotation from each gene description provided. Gene description for an mRNA transcript starts with a header line and ends with an emply line. First symbol in the header line (> or <) indicates the direction of the gene transcript relative to the input DNA sequence (positive or negative, respectively). Exon description lines follow the header line. They should be in indicated as <from> <to> <exon type>, where <from> is the starting position of the exon and <to> is the ending position of the exon. The <exon type> could be either CDS, UTR or OTH (all other features). |
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For example, 3 exon gene STC23 on the negative strand. Gene starts at position 1000 in the submitted sequence and ends at 500. Exons span regions [1000,800], [600,550], and [530,500]. Coding part of the gene is from 900 to 550. The annotation for this gene should be indicated as follows: |
< 500 1000 STC23 500 530 UTR 550 600 CDS 800 900 CDS 900 1000 UTR |