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Open Mass Spectrometry Search Algorithm (OMSSA)

Probe Database Debut

New Structure Link from Protein

BLAST Download Update

New Microbial Genomes in GenBank

Nucleotide Database Splits

NCBI 4-Pack Course

RefSeq Release 14

New Organisms in UniGene

GenBank Passes 100 Gigabases

New BLAST Formatter

Splign Alignment Tool

GenBank Release 150

New Genome Builds

Submission Corner

Masthead





Entrez Nucleotide Database Splits

NCBI's traditional Nucleotide database has been divided into three component databases: "EST" containing Expressed Sequence Tags (ESTs); "GSS" containing Genome Survey Sequences (GSS); and "CoreNucleotide" containing the remaining nucleotide sequences. This division will facilitate more tightly focused searches.
A statistics line shows the results for the three component nucleotide databases and is shown in Figure 1. The new component databases are included within the Entrez linking scheme and links within and between databases can be selected as usual.
Entrez features such as the Limits, Preview/ Index, History, and MyNCBI tabs are maintained separately. Because unique search fields are available for each new Nucleotide component database more precise searches are possible. See the Entrez help document for more information and for searching details:

A more detailed article on the split of the Entrez Nucleotide database will appear in the next issue of the NCBI news.

Figure 1. Results of the search "All[filter]" is shown in the statistics line below the filter tabs, indicating a total of 62.2 million records in the Entire Nucleotide division of the database info.

—MR

   

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NCBI News | Fall/Winter 2002 NCBI News: Spring 2003