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NCBI Databases

Literature

The World's largest repository of medical and scientific abstracts, full-text articles, books and reports

Bookshelf

Books and reports

MeSH

Ontology used for PubMed indexing

NLM Catalog

Books, journals and more in the NLM Collections

PubMed

Scientific and medical abstracts/citations

PubMed Central

Full-text journal articles

Genes

Gene sequences and annotations used as references for the study of orthologs structure, expression, and evolution

Gene

Collected information about gene loci

GEO DataSets

Functional genomics studies

GEO Profiles

Gene expression and molecular abundance profiles

HomoloGene

Homologous genes sets for selected organisms

PopSet

Sequence sets from phylogenetic and population studies

UniGene

Clusters of expressed transcripts

Genetics

Heritable DNA variations, associations with human pathologies, and clinical diagnostics and treatments

ClinVar

Human variations of clinical significance

dbGaP

Genotype/phenotype interaction studies

dbSNP

Short genetic variations

dbVar

Genome structural variation studies

GTR

Genetic testing registry

MedGen

Medical genetics literature and links

OMIM

Online mendelian inheritance in man

Proteins

Protein sequences, 3-D structures, and tools for the study of functional protein domains and active sites

Conserved Domains

Conserved protein domains

Identical Protein Groups

Protein sequences grouped by identity

Protein

Protein sequences

Protein Clusters

Sequence similarity-based protein clusters

Sparcle

Functional categorization of proteins by domain architecture

Structure

Experimentally-determined biomolecular structures

Genomes

Genome sequence assemblies, large-scale functional genomics data, and source biological samples

Assembly

Genome assembly information

BioCollections

Museum, herbaria, and other biorepository collections

BioProject

Biological projects providing data to NCBI

BioSample

Descriptions of biological source materials

Genome

Genome sequencing projects by organism

Nucleotide

DNA and RNA sequences

Probe

Sequence-based probes and primers

SRA

High-throughput sequence reads

Taxonomy

Taxonomic classification and nomenclature

Chemicals

Repository of chemical information, molecular pathways, and tools for bioactivity screening

BioSystems

Molecular pathways with links to genes, proteins and chemicals

PubChem BioAssay

Bioactivity screening studies

PubChem Compound

Chemical information with structures, information and links

PubChem Substance

Deposited substance and chemical information

BLAST

Basic Local Alignment Search Tool

BLAST is a tool for comparing an amino acid or nucleotide sequence to an entire sequence library, identifying regions of high sequence similarity.

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Video tutorial

VIDEO: Introducing a New Web BLAST Results Page

Introducing a New Web BLAST Results Page

NCBI is testing a new web BLAST results page format and we want your feedback. This video highlights new features and the layout of the ...

 View at YouTube

Recent blog posts

April 18, 2019

Proposed changes to AGP files for genome assemblies

If you are a consumer or producer of AGP (A Golden Path) files for genome assemblies, please read on. We’d like your ...

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April 17, 2019

Recent enhancements to BLAST+ (2.9.0): built-in taxonomy and access to proteins from the Pathogen Detection Project

We have made some recent improvements to the BLAST+ applications that take full advantage of the version 5 BLAST databases (BLASTDBv5), which ...

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April 15, 2019

NCBI on YouTube: Request access to controlled data in dbGaP

Do you need access to controlled data in the database of Genotypes and Phenotypes (dbGaP)? This short video will show you how ...

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Recent videos

VIDEO: Clone FTP Files: Content and Uses for Genome Assemblies

Clone FTP Files: Content and Uses for Genome Assemblies

This is a minor update to the video of the same name that was published in January 2017. Learn how to use clone FTP files ...

 View at YouTube

VIDEO: Introducing a New Web BLAST Results Page

Introducing a New Web BLAST Results Page

NCBI is testing a new web BLAST results page format and we want your feedback. This video highlights new features and the layout of the ...

 View at YouTube

VIDEO: MANE- A New Collaboration Between NCBI and EMBL-EBI

MANE- A New Collaboration Between NCBI and EMBL-EBI

Presented December 12, 2018. Learn about the MANE (Matched Annotation from the NCBI and EBI) collaboration, a joint initiative of the NCBI RefSeq and EMBL-EBI ...

 View at YouTube