The Best RCSB Protein Data Bank Alternatives in 2026

Search and browse CATH's database classifying protein structures, with options to find a protein structure.

PDBj maintains the single global PDB/BMRB/EMDB archives of macromolecular structures and provides integrated tools for searching and analyzing PDB data.

The PlaBi database covers crop plants and Arabidopsis, including sequence data for protein-coding genes.

The Worldwide Protein Data Bank manages the public archive of 3D structures for proteins, nucleic acids, and complex assemblies.

The SWISS-MODEL Repository contains annotated 3D protein structure models generated by a homology-modelling pipeline.

The Human Protein Atlas organizes protein information across tissues, brain, cells, blood, disease, structure, and interaction resources.

The Candida Genome Database provides curated genomic, protein, phenotype, literature and sequence information.

EMDataResource archives and retrieves three-dimensional electron microscopy structures, with data standards, validation methods, and related tools.

Wiki-Pi supports searching human protein interactions and browsing disease-related interaction networks.

MG-RAST provides tools to search, upload, download, and analyze metagenomic data and supports public submission of sequence data.

Openaid visualizes Swedish international aid data, including payments, recipients, purposes, and reported results.

The Cambridge Structural Database contains curated crystal-structure data for chemistry research.

deadtrees.earth offers an open database for accessing, contributing, and visualizing remote-sensing data on tree mortality.

The National Microbiome Data Collaborative is merging its core functions into DOE-BRIDGE as its program concludes.

PeanutBase integrates peanut genetic, genomic, and trait data, with gene, trait, sequence, and germplasm tools.

NIST’s Digital Library of Mathematical Functions provides reference material on mathematical functions, with indexes, notations, and search.

The Korea Sequence Read Archive stores raw sequencing data and alignment information and offers a cloud-based analysis service.

AceView annotates human and worm genes using mRNA and expressed sequence tag data.

The Gene Ontology project represents knowledge about gene functions across molecular, cellular, and tissue system levels.

The National Center for Education Statistics collects, analyzes, and reports data on U.S. education from early childhood through adulthood.

Winterthur’s data and statistics office collects, processes, and analyzes city data on population, housing, economy, culture, environment, and transport.

The Nucleic Acid Knowledgebase provides 3D structural information about nucleic acids, with structures, search, and full-text access.

Reciprocal Net links a distributed crystallography network with a searchable collection of common molecular structures.

PAZy catalogs plastic-active enzymes, substrates, enzyme structures, and curated literature on plastic degradation.