I am trying to convert GenBank accession numbers to Entrez ID or Symbol using the org.Hs.egACCNUM object. However many of the GenBank accnum in my list do not exist in the object. The description of this object says: “This object is a simple mapping of Entrez Gene identifiers https://www.ncbi.nlm.nih.gov/ entrez/query.fcgi?db=gene to all possible GenBank accession numbers”.
For example if I search for AA725246 in ncbi I found this record:
410 bp expressed sequence tag.
Accession: AA725246.1GI: 2742953
however if I try to find AA725246 in org.Hs.egACCNUM I can not find it.
e.g. in R
> k <- keys(org.Hs.eg.db, keytype="ACCNUM")
>"ABF01637" %in% k
>"AA725246" %in% k
How can I convert this kind of accession number to gene symbol?