Sample of NCBI BLAST FASTA chemical/x-fasta sequence file format

<object type="chemical/x-fasta" width="640" height="480" >
    <param name="inline" value="&gt;seq1 Sample DNA&#xA;
AGTACGT&#xA;
"/>
</object>

Referencing the National Center for Biotechnology Information (NCBI)

If you wish to reference a submission to the National Center for Biotechnology Information then use the following URL, substituting your id for <id>. This example assumes that your data reside in the Nucleotide database ( db=nuccore ), please substitute the db= value for the appropriate database.

http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nuccore&dopt=fasta&sendto=t&id=<id>

For example, for the Id: 44010, the complete html would be:

<object data="http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nuccore&dopt=fasta&sendto=t&id=44010"
   type="chemical/x-fasta" width="640" height="480" />

Referencing the Protein Data Bank

If you wish to reference a submission to the Protein Data Bank then use the following URL, substituting your structureId for <structureId>

http://www.pdb.org/pdb/download/downloadFile.do?fileFormat=FASTA&compression=NO&structureId=<structureId>

For example, for the structure Id: 1CRN, the complete html would be:

<object data="http://www.pdb.org/pdb/download/downloadFile.do?fileFormat=FASTA&compression=NO&structureId=1CRN"
   type="chemical/x-fasta" width="640" height="480" />