The World's largest repository of medical and scientific abstracts, full-text articles, books and reports
Gene sequences and annotations used as references for the study of orthologs structure, expression, and evolution
Protein sequences, 3-D structures, and tools for the study of functional protein domains and active sites
Conserved protein domains
Protein sequences grouped by identity
Sequence similarity-based protein clusters
Functional categorization of proteins by domain architecture
Experimentally-determined biomolecular structures
Genome sequence assemblies, large-scale functional genomics data, and source biological samples
Genome assembly information
Museum, herbaria, and other biorepository collections
Biological projects providing data to NCBI
Descriptions of biological source materials
Genome sequencing projects by organism
DNA and RNA sequences
Sequence-based probes and primers
High-throughput sequence reads
Taxonomic classification and nomenclature
Heritable DNA variations, associations with human pathologies, and clinical diagnostics and treatments
Repository of chemical information, molecular pathways, and tools for bioactivity screening
BLAST is a tool for comparing an amino acid or nucleotide sequence to an entire sequence library, identifying regions of high sequence similarity.
NCBI Minute: Using organism (taxonomic) information with standalone BLAST
Limiting a BLAST search to particular organism or taxonomic group is important for making BLAST searches efficient. This also produces results that are easier to ...
Recent blog posts
The most popular filters are included on the new PubMed sidebar by default. You can now access many more filters using the ...Continue reading
We have released a new version of the Prokaryotic Genome Annotation Pipeline (PGAP), available on GitHub. The new release includes the ability ...Continue reading
NCBI Minute: A Beginner's Guide to Genes and Sequences at NCBI
Interested in learning about genes and sequences but don't know how to begin? This webinar, intended for people with limited experience working with sequence information, ...
How to Find HSDB Data in PubChem
TOXNET data is moving to PubChem. This video shows you how to find HSDB-specific data in PubChem. https://pubchem.ncbi.nlm.nih.gov/ https://toxnet.nlm.nih.gov/
NCBI Minute: An Updated PubMed is on its Way!
This video highlights the main features you can expect in the new PubMed, including those already available in PubMed Labs. A timeline is included, as ...