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.

Carboxypeptidase A

Hemoglobin (1000)

Deoxyhemoglobin

Collagen

Myoglobin

Trypsin

Aspartate Transcarbamoylase (ATCase)

B-DNA

Cytochrome c

DPG-Hemoglobin Complex

Oxyhemoglobin

Ribonuclease S

Tomato Bushy Stunt Virus (TBSV)

Intermolecular Contacts in Hemoglobin S

Hemoglobin

DNA

A-DNA

Cytochrome c (unbound)

Induced Lac Repressor

Lac Repressor

Z-DNA

Lysozyme (512)

Crambin

Myoglobin Fold

Hemoglobin S

Deoxyribonucleic Acid (DNA)

Lysozyme (488)

Transfer Ribonucleic Acid (tRNA)

Myohemerythrin

TATA-Binding Protein (TBP)

Immunoglobulin G (IgG)

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

Casein Micelle and Fat Globule in Milk

Immunological Synapse

JCVI-syn3A Minimal Cell

Lipid Droplets

Kinetochore

Escherichia coli

Model of a Mycoplasma Cell

Bacteriophage T4 Infection

Biosites: Blood Plasma

Escherichia coli Bacterium

Mycoplasma mycoides

Blood

Last Universal Common Ancestor

Chloroplast

Respiratory Droplet

Zika Virus

Cellulose Synthase

CytoSkeleton

Influenza Virus

Autophagy

Transfer RNA and Gag Protein

Biosites: Basement Membrane

SARS-CoV-2 and Neutralizing Antibodies

HIV Vaccine

Phage-based COVID-19 Vaccine

Excitatory and Inhibitory Synapses

Caulobacter Polar Microdomain

Abiogenesis

Collagen and Extracellular Matrix

SARS-CoV-2 mRNA Vaccine

Influenza Vaccine

Biosites: Nucleus

SARS-CoV-2 Fusion

Myelin

Coronavirus Life Cycle

Poliovirus Neutralization

Insulin Action

HIV in Blood Plasma

Vascular Endothelial Growth Factor (VegF) Signaling

Coronavirus

Biosites: Red Blood Cell

Ebola Virus

Biosites: Cytoplasm

Biosites: Muscle

HIV-Infected Cell

Myoglobin in a Whale Muscle Cell

Measles Virus Proteins

Insulin Release

RecA and DNA

Red Blood Cell Cytoskeleton