PMC:1698483 / 51083-52073 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/1698483","sourcedb":"PMC","sourceid":"1698483","source_url":"https://www.ncbi.nlm.nih.gov/pmc/1698483","text":"Extraction of the structured motifs\nWe extract the structured motifs by doing positional joins on the pos-lists of the simple motifs from the end to the start in the structured motif ℳ MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBamrtHrhAL1wy0L2yHvtyaeHbnfgDOvwBHrxAJfwnaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaWaaeGaeaaakeaaimaacqWFZestaaa@3790@. Formally, let H[l, u]T be an intermediate structured motif, with simple motif H as the head, and a suffix structured motif T as tail. Then P (H[l, u]T) can be obtained by doing positional joins on P (H) and P (T). Since P (H) keeps only the start positions, we need to compute the corresponding end positions for those occurrences of H, to check the gap constraints. Since only exact matches or substitutions are allowed for simple motifs, the end position is simply s + |H| - 1 for a start position s.","divisions":[{"label":"title","span":{"begin":0,"end":35}}],"tracks":[]}