note - FIZ Karlsruhe
note - FIZ Karlsruhe
note - FIZ Karlsruhe
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Additional search indexes<br />
Text and Bibliographic searching<br />
Feature Table (FEAT)<br />
The Feature Table (FEAT) comprises indexed annotations which describe specific features of the<br />
sequence, e.g. coding regions, domains, introns/exons, etc. The features are organised in the table<br />
by the Thomson Reuters analyst, using a controlled list of feature keys and qualifiers (listed on<br />
pages 128 and 129). They can be a useful way to find sequences with reported characteristics.<br />
Unlike the Basic Index, the FEAT field supports left and simultaneous left and right truncation.<br />
Molecule Type (MTY)<br />
Molecule type is a controlled term field for different broad classes of sequences. This can often be<br />
a useful field for narrowing a sequence search into more precise subsets, e.g. to distinguish<br />
between mRNA and cDNA results. The full list of DGENE molecule types is given on page 132.<br />
=> S L1 AND CDNA/MTY<br />
Patent Sequence Location (PSL)<br />
The Patent Sequence Location (PSL) field indicates where a given sequence is located in the<br />
original document. The field shows if the sequence was referred to in a CLAIM, an EXAMPLE,<br />
or in other parts of the patent DISCLOSURE, and typically also includes a table, page, drawing,<br />
and/or sequence identity number 1 , if available. PSL can therefore be a useful way to narrow an<br />
answer set to sequences that may have been, e.g. claimed by the patent applicant.<br />
=> S L1 AND CLAIM/PSL<br />
Sequence Length (SQL)<br />
DGENE has a fully numerically range searchable Sequence Length (SQL) field. The SQL field<br />
can be searched with standard STN numeric operators or ranges. The field provides the ability, for<br />
example, to limit search results to desired sequence length or range of sequence lengths.<br />
=> S L1 AND 100-200/SQL<br />
Amino acid (AA) and Nucleic acid (NA)<br />
Individual amino acid residues and nucleotides are numerically range searchable in the amino<br />
acid (AA) and nucleic acid fields (NA) respectively. The AA and NA fields can be searched with<br />
standard STN numeric operators or ranges 2 , in combination with the single letter code of interest.<br />
=> S L1 AND 100-200 A/NA<br />
1 Sequence Identity Numbers (SEQ ID NOs) are indexed in the DGENE PSL field from 2004 onwards.<br />
2 For greater than (>) or less than ( S NA>10 (S) A/NA.<br />
GENESEQ on STN (DGENE) Workshop Manual | Page 89
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