Entrez is a molecular biology database and retrieval system developed by the National Center for Biotechnology Information. It provides an integrated interface to numerous biological databases, allowing users to search across different databases simultaneously. Entrez began as a CD database in 1991 and became available online in 1993. Key features include integrated access to multiple biological databases, batch downloads of large search results, and text-based searching across genetic and bibliographic data using Boolean operators. Users can access Entrez by searching for biological genes, proteins, or other terms.

1. ENTREZ
AYEBALE CHARITY
KIRABO PAMELA
KAGO SIMON PETER

2. • ENTREZ – is a molecular biology database and retrieval system
developed by the National Center for Biotechnology Information
(NCBI).
• It is an entry point for exploring distinct but integrated databases.
• Retrieval of huge and ever increasing database is one of the
important task for users in bioinformatics.

3. Background of Entrez
• In 1991, Entrez was introduced in CD form.
• In 1993, a client-server version of the software provided connectivity
with the internet.
• In 1994, NCBI established a website, and Entrez was part of this initial
release.
• In 2001, Entrez bookshelf was release and in 2003, the Entrez Gene
database was developed.

4. Features of Entrez
• It is a molecular biology database and retrieval system
• Entrez also allows Batch downloads of large search results.
• Also known as an integrated database and its cross-referenced
• It is an entry point for exploring distinct but integrated data bases.
• Easy to use and is highly convenient
• User don’t have to visit multiple database as it displays all the links of
information on single web page
• It allows text based search for a wide variety of data , such as
annotated genetic sequence information , citations , abstract full
papers
• It uses Boolean operator

7. How to use Entrez
• Open Google /chrome
• Type -Entrez
• Select Entrez from upper panel
• Type any biological gene or protein
• Click search

18. References
• Entrez: Molecular Biology Database and Retrieval System, Schuler GD,
Epstein JA, Ohkawa H, Kans JA, Methods Enzymol. 266, 141-62, 1996.
(http:/www.ncbi.nlm.nih.gov/Entrez/).
• vlab.amrita.edu,. (2012). Retrieving sequence data from Entrez.
Retrieved 9th March 2024, from
vlab.amrita.edu/?sub=3&brch=273&sim=1437&cnt=2.