Molecule of the Month
October 2026

Celebrating 55 Years of the PDB

Enabling the rapid evolution of protein structure prediction and design

More

3D View:  36CR

Style

Color

Spin

Learn
PDB data help explain fundamental biology, biomedicine, bioengineering/biotechnology, and energy sciences
Feature Focus
Use PDB-101 resources to learn how researchers are using biology in industry
Teach
The RCSB PDB Curricula provide authentic, hands-on teaching materials, individual and group activities and assessment suggestions
SciArt Galleries
Irving Geis (1908-1997) was a gifted artist who helped illuminate the field of structural biology with his iconic images. The Geis Digital Archive features many of his illustrations in the context of their molecular structures.

Images used with permission from the Howard Hughes Medical Institute (www.hhmi.org). All rights reserved.

Oxyhemoglobin

Ribonuclease S

Lac Repressor

Tomato Bushy Stunt Virus (TBSV)

Carboxypeptidase A

Aspartate Transcarbamoylase (ATCase)

A-DNA

Myoglobin Fold

Hemoglobin

DNA

Cytochrome c

Crambin

Induced Lac Repressor

Lysozyme (488)

Collagen

Hemoglobin (1000)

Deoxyribonucleic Acid (DNA)

Cytochrome c (unbound)

Deoxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

Myohemerythrin

Intermolecular Contacts in Hemoglobin S

DPG-Hemoglobin Complex

Z-DNA

Myoglobin

Trypsin

TATA-Binding Protein (TBP)

B-DNA

Hemoglobin S

Immunoglobulin G (IgG)

Lysozyme (512)

The Molecular Landscapes by David S. Goodsell integrate information from structural biology, microscopy and biophysics to simulate detailed views of the molecular structure of living cells.

Illustrations are free for use under a CC-BY-4.0 license

Respiratory Droplet

CytoSkeleton

Autophagy

Caulobacter Polar Microdomain

Mycoplasma mycoides

Model of a Mycoplasma Cell

Biosites: Basement Membrane

Transfer RNA and Gag Protein

Phage-based COVID-19 Vaccine

Last Universal Common Ancestor

Biosites: Nucleus

Ebola Virus

Myelin

Coronavirus Life Cycle

HIV in Blood Plasma

SARS-CoV-2 and Neutralizing Antibodies

Myoglobin in a Whale Muscle Cell

Poliovirus Neutralization

Cellulose Synthase

Casein Micelle and Fat Globule in Milk

SARS-CoV-2 Fusion

HIV Vaccine

Biosites: Red Blood Cell

Coronavirus

Immunological Synapse

Excitatory and Inhibitory Synapses

Escherichia coli

HIV-Infected Cell

Lipid Droplets

Measles Virus Proteins

Blood

Bacteriophage T4 Infection

Chloroplast

Biosites: Blood Plasma

Influenza Virus

Influenza Vaccine

Insulin Release

Vascular Endothelial Growth Factor (VegF) Signaling

Insulin Action

Escherichia coli Bacterium

Zika Virus

RecA and DNA

JCVI-syn3A Minimal Cell

Abiogenesis

Red Blood Cell Cytoskeleton

SARS-CoV-2 mRNA Vaccine

Collagen and Extracellular Matrix

Biosites: Muscle

Kinetochore

Biosites: Cytoplasm