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Recombinant DNA

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Genome Annotation and Assembly

The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.

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Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...

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Related Experiment Video

Updated: Apr 20, 2026

Biobank for Translational Medicine: Standard Operating Procedures for Optimal Sample Management

Biobank for Translational Medicine: Standard Operating Procedures for Optimal Sample Management

Published on: November 30, 2022

GenBank.

Dennis A Benson¹, Karen Clark¹, Ilene Karsch-Mizrachi¹

¹National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Building 38A, 8600 Rockville Pike, Bethesda, MD 20894, USA.

Nucleic Acids Research

|November 22, 2014

Summary

This summary is machine-generated.

GenBank is a vital public nucleotide sequence database, updated daily and accessible globally. It integrates diverse biological data, facilitating research through advanced search tools like BLAST.

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Area of Science:

Bioinformatics
Genomics
Molecular Biology

Background:

GenBank is a critical public repository for nucleotide sequences.
It houses data from over 300,000 described species.
Sequences are sourced from individual labs and large-scale projects.

Purpose of the Study:

To describe the GenBank database and its functionalities.
To highlight its role in the global scientific community.
To inform users about data submission and retrieval methods.

Main Methods:

Data submission via BankIt and Sequin programs.
Daily data synchronization with international archives (ENA, DDBJ).
Integration with NCBI Entrez for comprehensive data retrieval.

Main Results:

GenBank contains over 300,000 species' nucleotide sequences.
Worldwide coverage achieved through daily data exchange.
Integrated access to DNA, protein, genome, and literature data.

Conclusions:

GenBank is an essential, globally accessible resource for nucleotide sequences.
Its integration with other NCBI tools enhances research capabilities.
Regular updates and FTP access ensure data availability.