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Proteins - NCBI

Proteins

NCBI's Protein resources include protein sequences and structures and related comparison and visualization tools, as well as databases and tools to predict and analyze functional domains.

How to

Protein Sequences

Protein
protein sequence repository
BLASTp
protein sequence similarity search tool
cobalt
protein multiple alignment tool
Protein Clusters
sequence similarity-based protein clusters

Functional Domains

Conserved Domains
conserved protein functional domain repository
CD-Search
sequence-based domain search tool
cdart
modular protein domain architecture tool
CD-Tree
conserved domain analysis program

Three-dimensional Structures

Structure
three dimensional macromolecular structures
Cn3D
downloadable 3D structure viewer
VAST+
macromolecular structural similarity service
VAST Search
finds 3D structures similar to an input PDB file

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 BioProjects database

Additional Tools

ProSplign
aligns protein sequences to genomes
Genome ProtMap
maps microbial protein coding regions to genomes
iCn3D
displays interactive 3D structures in a web browser