I have a list of gene name in a file

```
CHRNB2
EGR2
GCK
KRT14
LMNA
FGF3
TK2
ABCC8
```

How can U map them to uniprot ID?

**P.S** I tried Uniprot "ID mapping" (from-"GENEID" to-"UNIPROTKB AC").But it couldn't map.

Please suggest me what to do.Thnx
These look to be gene symbols not [Entrez Gene][1] identifiers, so identifier mapping for Entrez Gene would not work. However UniProt include most gene symbols and their various synonyms in their data, so a query should work and find the set of UniProtKB entries which match. For example:

1. Go to the [UniProt.org website][2]
2. Select "Protein Knowledgebase (UniProtKB)" for "Search in"
3. For the "Query" enter 'gene:' followed by the gene symbol (e.g. "gene:CHRNB2")
4. Click the "Search" button
5. The results contain a list of UniProtKB entries matching this gene symbol (e.g. [for CHRNB2][3])

I suspect you may have a specific species in mind so you might want to use additional terms to limit the results further.

Once you have worked out the form of the required query you could use the [UniProt.org REST API][4] to script the required queries and return only selected data.

 [1]: http://www.ncbi.nlm.nih.gov/gene/
 [2]: http://www.uniprot.org/
 [3]: http://www.uniprot.org/uniprot/?query=gene%3ACHRNB2
 [4]: http://www.uniprot.org/faq/28