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Genes - NCBI

Genes

NCBI's Gene resources include collections of curated nucleotide sequences used as references, sequence clusters to predict and study homologs, and various databases and tools for the study of gene expression.

How to

Gene Loci

Gene
gene summary information and links
clusters of expressed sequences
Nucleotide
gene and transcript sequences

Homologs

HomoloGene
homologous gene sets for selected organisms
PopSet
studies of sequences within and across populations
Protein Clusters
sequence similarity-based protein clusters

Gene Expression

GEO Profiles
expression profiles for individual genes
EST
expressed sequence tags
SRA
high-throughput DNA sequences

Supporting Resources

Taxonomy
taxonomic classification and nomenclature catalog
GenBank
primary nucleotide sequence repository
RefSeq
curated, non-redundant biological sequence set
BioProject
catalog of high-throughput genome-wide studies
BioSample
sample repository for the BioProject database
Clone
genomic and cDNA clone repository
Probe
sequence-based probe and primer repository

Additional Tools

BLAST
finds regions of local similarity between biological sequences
GEO2R
identifies differentially expressed genes in GEO datasets
Map Viewer
browses and displays genomic maps
ORF Finder
suggests potential open reading frames in a DNA sequence