[BiO BB] Re: Quickly retrieving cross-referenced records from NCBI

[Dale Richardson]

Hello All,

Forgive me for posting, but this question is hard to condense into a  
good google search.  I am wondering if there is a quick way to batch  
retrieve all coding sequences (mRNA sequences) linked to a particular  
NCBI RefSeq Protein identifier.  For example, if I have a list of 10  
sequences with the following protein refseq IDs:

XP_698519.1
XP_697978.1

and so on..

How can I retrieve the cross-referenced XM_ identifiers for the  
coding sequences based on such protein accessions?  Must one write  
some kind of script to accomplish this or is there a quicker way?

thanks,

dale richardson
university of cologne