<p>Hello all,</p>

<p>I have a very large list of NCBI gene IDs (such as, gi:47221249, ect). I am hoping to use this list to get the descriptions for each of the gene IDs. Using the GI above it would be &quot;unnamed protein product [Tetraodon nigroviridis]&quot;.</p>

<p>Thus ending up with a file that has two columns, one with gene IDs and the other with the description for these IDs.</p>

<p>Would anyone know of a script/software already available to do a job such as this?</p>

<p>Thanks for the help!</p>

When possible I suggest avoid using gi identifiers as I have seen many cases where they have been unable to retrieve historical data.

You could use [batch Entrez][1], and extract the information you need from the resulting file, remembering to select the appropriate database (nucleotide, protein etc).

 [1]: http://www.ncbi.nlm.nih.gov/sites/batchentrez