Features & Highlights
PDB's Emerald Anniversary
Today marks the 55th anniversary of the 1971 announcement of the PDB. Consider supporting 50 years of PDB's spirit of openness, cooperation, and education with a donation to the wwPDB Foundation.
RCSB Protein Data Bank Home Page
RCSB Protein Data Bank (RCSB PDB) enables scientific breakthroughs via TOOLS for searching, visualization, and analysis of 3D structural DATA.
RCSB PDB is a member of the Worldwide PDB partnership.
Tools
All Tools
Sequence Motif Search
Find structures with sequences that share small conserved regions (motifs) that have biological meaning
3D Motif Search
Find structures that contain a similar 3D arrangement of residues with functional significance (catalytic or binding sites)
Sequence Annotations Viewer
Graphical summaries of protein features and their relationships with UniProtKB entries
Sequence Similarity Search
Find structures that contain a similar nucleotide or protein sequence using the MMseqs2 method
Sequence Annotations in 3D
Map protein sequence features onto the 3D structure of protein assemblies
Pairwise Structure Alignment
Calculate pairwise structure alignments using various methods
Structure Attributes Search
Use structural properties that have text or numerical values to build complex queries with 'AND/OR' logic
Browse Annotations
Find PDB structures using annotations from various ontologies and hierarchical classification schemes, e.g. Disease Ontology, Molecular Function
Genome View
Explore the correspondences between PDB entity sequences, genes, and genomes
3D Similarity Search
Find structures that share a similar 3D shape using AI/ML-generated vector embeddings
Chemical Similarity
Search for small molecules using SMILES, InChI, or chemical formula
Data
Statistics
Molecule of the Month
Celebrating 55 Years of the PDB Opens in a new tab.
Enabling the rapid evolution of protein structure prediction and design
Opens in a new tab.
Register for Special Webinar Celebrating PDB55
Join us on Oct 20 for a replay of the IUCr Plenary Presentation from Cynthia Wolberger (Johns Hopkins) From mechanism to inhibitors: Controlling deubiquitinating enzymes in cells
Register for Electron Microscopy on PDB’s 55th Birthday
Join Jason Kaelber (Rutgers University) on Oct 20 for a webinar on Where will we be at 55 years of EM depositions?
Happy Birthday, Irving Geis
Celebrate Geis' birthday (October 18, 1908) with a tour of the Geis Digital Archive of his pioneering works of biomolecular art at PDB-101
Celebrate PDB55 with IUCr and Stephanie A. Wankowicz
Watch "Decoding conformational ensembles to leverage entropy for function and design"
Celebrate PDB55 with IUCr and Yifan Cheng
Watch "Making sense of invisible density in single particle cryo-EM"
Announcing a New Beta MCP Server
Connect AI agents to RCSB PDB APIs and PDB data
Celebrate PDB55 with IUCr and Erica Ollmann Saphire
Watch "Human Neutralizing Antibodies against Measles Virus from an MMR vaccine"
Register for Special Webinar Celebrating PDB55
Join us on Oct 20 for a replay of the IUCr Plenary Presentation from Cynthia Wolberger (Johns Hopkins) From mechanism to inhibitors: Controlling deubiquitinating enzymes in cells
Register for Electron Microscopy on PDB’s 55th Birthday
Join Jason Kaelber (Rutgers University) on Oct 20 for a webinar on Where will we be at 55 years of EM depositions?
PDB-101 Focus: Biotechnology
PDB-101 materials explore how researchers are using biology in industry, including bacteria building biodegradable plastic that could be better for the environment
9X3T
Cryo-EM structure of the flagellar filament in Vibrio parahaemolyticus VP288
12XK
Candida albicans Chitin synthase 1 (CaChs1) bound to UDP-GlcNAc and diynyl arylamine (DA, aka RO-09-3143)
9QQZ
Cobalamin-binding chimera 2 (Cob02)
12KM
Supramolecular assembly of a staphylococcal delta-toxin peptide fragment, STIP3-G3Aib
29MX
Crystal structure of the Dihydrofolate reductase from Nocardia asteroides bound to NADPH and trimethoprim
44AC
Crystal structure of FGFR1 with a nucleoside scaffold-based inhibitor LJ5438
9X4X
Cryo-EM structure of HSP90-CDC37-PINK1 complex
9ZSM
Nucleosome with an SSB at SHL +5.3 in complex with human PARP2, HPF1, and Talazoparib, Class 8
9ZTO
Nucleosome with an SSB at SHL +5.3 in complex with human PARP2 and HPF1, Class 2
44AA
Crystal structure of FGFR1 with a nucleoside scaffold-based inhibitor LJ5369
Latest Publications
Quarterly Newsletter:
Fall 2026 | Issue 111
In this issue: 55th Anniversary of the Protein Data Bank; wwPDB news; videos about RCSB PDB tools; and PDB history resources.
Education Corner:
Fall 2026 | Issue 111
INHABITING THE INVISIBLE. When Molecules Speak in the Peruvian Andes: Art, Science, and the Awakening of a New Scientific Community in Ayacucho by Hugo Valdivia-Olarte, Soledad Reyes, Jane Valdivia-Olarte, Laura Zea Valdivia (BioScience-App)