GenBank Cumulative Updates
the NCBI contig (eg NT_ 011520) of which AC005006 is a component.
Entrez “nucleotides” with AC005006. Select “Assembly” in
the Display pulldown and press the “Display” button.
Q. Generate a list of the components comprising
NCBI contig NT_011520.
where you left off in the example above and choose “Components” in
the Display pulldown. Then press “Display” to show the components
of the contig.
Q. Retrieve the UniGene cluster IDs for
a list of 50 human mRNA RefSeqs (eg. NM_130786).
A. Put a
list of the accessions, one per line, into a text file. Upload this file
using Batch Entrez at:
When the document summary giving links to each
accession is returned, use the
Display pulldown to select “UniGene Links”. Then press the Display
button to display the list of UniGene clusters corresponding to the list
Q. Beginning with a list of human mRNA RefSeq
accessions, generate a list of corresponding protein RefSeq accessions.
A. Upload the mRNA accession list, as above.
From the resulting document summary, choose “Protein Links” from
the Display pulldown and press Display.
Q. Find all viral 3D structure records which
include two DNA chains.
A. Search Entrez Structures with “viruses[orgn] AND “2”[DNAChain
Count]”. Click on the “Preview/Index” link to see more fields.