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.

Lac Repressor

B-DNA

Lysozyme (512)

Carboxypeptidase A

Ribonuclease S

Immunoglobulin G (IgG)

Myohemerythrin

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin S

TATA-Binding Protein (TBP)

Aspartate Transcarbamoylase (ATCase)

Deoxyhemoglobin

A-DNA

Deoxyribonucleic Acid (DNA)

Intermolecular Contacts in Hemoglobin S

Transfer Ribonucleic Acid (tRNA)

DPG-Hemoglobin Complex

Hemoglobin (1000)

DNA

Myoglobin Fold

Z-DNA

Trypsin

Crambin

Induced Lac Repressor

Hemoglobin

Cytochrome c (unbound)

Collagen

Myoglobin

Cytochrome c

Oxyhemoglobin

Lysozyme (488)

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

Coronavirus Life Cycle

CytoSkeleton

Biosites: Basement Membrane

Vascular Endothelial Growth Factor (VegF) Signaling

Escherichia coli Bacterium

Ebola Virus

Bacteriophage T4 Infection

Autophagy

Biosites: Blood Plasma

JCVI-syn3A Minimal Cell

Immunological Synapse

Cellulose Synthase

SARS-CoV-2 Fusion

Biosites: Red Blood Cell

Collagen and Extracellular Matrix

Myelin

Insulin Release

Measles Virus Proteins

Lipid Droplets

Blood

Influenza Virus

Coronavirus

Zika Virus

Respiratory Droplet

Influenza Vaccine

Last Universal Common Ancestor

Abiogenesis

Mycoplasma mycoides

SARS-CoV-2 and Neutralizing Antibodies

Model of a Mycoplasma Cell

Biosites: Cytoplasm

Escherichia coli

Biosites: Nucleus

Chloroplast

Insulin Action

Red Blood Cell Cytoskeleton

Myoglobin in a Whale Muscle Cell

HIV in Blood Plasma

Excitatory and Inhibitory Synapses

Caulobacter Polar Microdomain

RecA and DNA

HIV Vaccine

Kinetochore

Casein Micelle and Fat Globule in Milk

Biosites: Muscle

Transfer RNA and Gag Protein

Phage-based COVID-19 Vaccine

HIV-Infected Cell

SARS-CoV-2 mRNA Vaccine

Poliovirus Neutralization