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Sequencher 4.8 User Manual--PC - Bioinformatics and Biological ...

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Qualifier type<br />

Description<br />

Citation or reference numbers<br />

Sequences<br />

Feature labels<br />

A citation or reference number is enclosed in square brackets to<br />

distinguish it from other numbers.<br />

Since 1998, it has not been acceptable to use a literal sequence<br />

of bases as the Sequence Qualifier.<br />

The feature label qualifier supports clarity in reporting by<br />

making sure your references are unambiguous. An example of<br />

a feature label would be alcA (see example below).<br />

The figure below shows a typical example of a feature table entry with qualifiers. In this<br />

example the feature key is CDS. The location is expressed as two numbers. The qualifiers<br />

tell the reader that the gene is alcA, the product of the gene is alcohol dehydrogenase <strong>and</strong><br />

that the evidence is experimental.<br />

Figure 27-2 Qualifier examples<br />

Key<br />

Location/Qualifiers<br />

CDS 6006..>6253<br />

/gene=”alcA”<br />

/experiment=”experimental evidence, no additional details<br />

recorded”<br />

/note=”ADHI; ethanol regulon”<br />

/codon_start=1<br />

/product=”alcohol dehydrogenase I”<br />

Information on the Feature Keys <strong>and</strong> Tables <strong>and</strong> Qualifiers has been taken from the<br />

official GenBank documentation which can be obtained from the following URL http://<br />

www.ncbi.nlm.nih.gov/collab/FT/index.html<br />

SEQUENCHER <strong>4.8</strong> <strong>User</strong> <strong>Manual</strong> for Windows © 1991 - 2007 Gene Codes Corporation, Inc. All rights reserved.<br />

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