Molecule of the Month
September 2026

Biofilms

Bacterial communities glued together and protected by biological polymers

More

3D View:  4P00

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.

Tomato Bushy Stunt Virus (TBSV)

Oxyhemoglobin

Cytochrome c

Aspartate Transcarbamoylase (ATCase)

Induced Lac Repressor

Intermolecular Contacts in Hemoglobin S

Myohemerythrin

A-DNA

B-DNA

Hemoglobin (1000)

Deoxyribonucleic Acid (DNA)

Ribonuclease S

DNA

Deoxyhemoglobin

Lysozyme (488)

Crambin

Hemoglobin

Z-DNA

Lysozyme (512)

Collagen

Cytochrome c (unbound)

Myoglobin Fold

Myoglobin

Trypsin

Lac Repressor

Carboxypeptidase A

TATA-Binding Protein (TBP)

Transfer Ribonucleic Acid (tRNA)

Immunoglobulin G (IgG)

Hemoglobin S

DPG-Hemoglobin Complex

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

Biosites: Cytoplasm

Biosites: Blood Plasma

HIV in Blood Plasma

CytoSkeleton

Abiogenesis

Bacteriophage T4 Infection

Coronavirus Life Cycle

Zika Virus

SARS-CoV-2 mRNA Vaccine

Model of a Mycoplasma Cell

Caulobacter Polar Microdomain

Immunological Synapse

Myoglobin in a Whale Muscle Cell

Chloroplast

Escherichia coli

Poliovirus Neutralization

Phage-based COVID-19 Vaccine

Myelin

SARS-CoV-2 Fusion

Biosites: Red Blood Cell

RecA and DNA

Red Blood Cell Cytoskeleton

JCVI-syn3A Minimal Cell

Insulin Release

Respiratory Droplet

Transfer RNA and Gag Protein

Mycoplasma mycoides

SARS-CoV-2 and Neutralizing Antibodies

Measles Virus Proteins

Biosites: Muscle

Collagen and Extracellular Matrix

HIV Vaccine

Influenza Vaccine

Last Universal Common Ancestor

Ebola Virus

Autophagy

Kinetochore

Influenza Virus

Escherichia coli Bacterium

HIV-Infected Cell

Casein Micelle and Fat Globule in Milk

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Basement Membrane

Excitatory and Inhibitory Synapses

Cellulose Synthase

Blood

Lipid Droplets

Insulin Action

Biosites: Nucleus