Literature
PubMed
PubMed® comprises more than 37 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.
Literature databases
Books and reports
Ontology used for PubMed indexing
Books, journals and more in the NLM Collections
Scientific and medical abstracts/citations
Full-text journal articles
Data
Genes
Gene sequences and annotations used as references for the study of orthologs structure, expression, and evolution
Collected information about gene loci
Functional genomics studies
Gene expression and molecular abundance profiles
Sequence sets from phylogenetic and population studies
Proteins
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
Protein sequences
Models representing homologous proteins with a common function
Experimentally-determined biomolecular structures
BLAST
A tool to find regions of similarity between biological sequences
Search nucleotide sequence databases
Search protein sequence databases
Search protein databases using a translated nucleotide query
Search translated nucleotide databases using a protein query
Find primers specific to your PCR template
Genomes
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
High-throughput sequence reads
Taxonomic classification and nomenclature
Clinical
Heritable DNA variations, associations with human pathologies, and clinical diagnostics and treatments
Privately and publicly funded clinical studies conducted around the world
Human variations of clinical significance
Genotype/phenotype interaction studies
Short genetic variations
Genome structural variation studies
Genetic testing registry
Medical genetics literature and links
Online mendelian inheritance in man
PubChem
Repository of chemical information, molecular pathways, and tools for bioactivity screening
Bioactivity screening studies
Chemical information with structures, information and links
Molecular pathways with links to genes, proteins and chemicals
Deposited substance and chemical information
News
Research news
8 things to know about the drug known as 'gas station heroin'
For decades, tianeptine was used to treat depression, even though no one knew how it worked. But it turns out it's a type of opioid, and the U.S. is facing a spike in abuse of "gas station heroin."
Getting to the Root of the Plant Microbiota
In plants, sugar transport and microbial community composition go hand in hand.
Perspective | There’s real danger in digging deep holes on a sandy beach
Experts recommend never digging a hole deeper than the knee height of the shortest person in your group — with two feet being the maximum depth.
Recent blog posts
NIH Genetic Testing Registry (GTR®) Annual Review Process Ensures High-quality Data
Do you rely on high-quality and up-to-date genetic test information from the NIH Genetic Testing Registry (GTR)? Laboratories are expected to regularly review their tests, lab contacts, and license data for accuracy. GTR is making the annual review process for submitters easier and more intuitive to ensure we provide you the most current information. Attention … Continue reading NIH Genetic Testing Registry (GTR®) Annual Review Process Ensures High-quality Data
RefSeq Release 225 Now Available!
Check out RefSeq release 225, now available online and from the FTP site. You can access RefSeq data through NCBI Datasets. What’s included in this release? As of July 8, 2024, this full release incorporates genomic, transcript, and protein data containing: 448,507,905 records 334,845,613 proteins 63,542,774 RNAs Sequences from 152,668 organisms The release is provided in several directories as … Continue reading RefSeq Release 225 Now Available!
Sequencing Technique Detects Earliest Signs of Genetic Mutations Underlying Cancer, Aging, and More
Every day, billions of cells in your body divide, each producing two daughter cells. It’s an essential process for your tissues and organs to renew themselves and remain healthy. To do it, cells must first duplicate their DNA to ensure that each daughter cell gets an accurate copy. In this process, mistakes are inevitably made. Most DNA errors are accurately fixed and do not lead to mutations. But when small errors akin to single-letter typos aren’t corrected, they can become permanent in a cell and multiplied with each subsequent cell division. Even cells that don’t divide, such as neurons in your brain, acquire damage and mutations in their DNA with age. As a result, your tissues contain collections of cells with distinct mutations that accumulate over time. While many of these small errors will show no obvious consequences, others can lead to cancer and other health conditions. Now, a new DNA sequencing technique, described in Nature and developed through research supported by NIH, promises to detect early DNA changes before they become permanent mutations in a cell’s genome. The method, called Hairpin Duplex Enhanced Fidelity Sequencing (HiDEF-seq), could advance our understanding of how and why mutations arise, with potentially important implications for our health. For example, the ability to identify signs that precede mutations may help predict a person’s health risks based on genetic predispositions, environmental exposures, or other factors.