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.

Cytochrome c

Myoglobin

Ribonuclease S

Lysozyme (512)

Lac Repressor

DNA

Carboxypeptidase A

Lysozyme (488)

Hemoglobin S

Deoxyhemoglobin

Deoxyribonucleic Acid (DNA)

B-DNA

Collagen

Hemoglobin (1000)

Crambin

Immunoglobulin G (IgG)

Trypsin

TATA-Binding Protein (TBP)

DPG-Hemoglobin Complex

Intermolecular Contacts in Hemoglobin S

Cytochrome c (unbound)

Myoglobin Fold

Transfer Ribonucleic Acid (tRNA)

Hemoglobin

Myohemerythrin

Z-DNA

Oxyhemoglobin

A-DNA

Induced Lac Repressor

Aspartate Transcarbamoylase (ATCase)

Tomato Bushy Stunt Virus (TBSV)

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

Biosites: Red Blood Cell

Coronavirus

Cellulose Synthase

Last Universal Common Ancestor

Model of a Mycoplasma Cell

HIV Vaccine

Insulin Action

Insulin Release

Abiogenesis

Coronavirus Life Cycle

Bacteriophage T4 Infection

Mycoplasma mycoides

HIV in Blood Plasma

Poliovirus Neutralization

Biosites: Cytoplasm

Escherichia coli Bacterium

Myoglobin in a Whale Muscle Cell

Respiratory Droplet

HIV-Infected Cell

Excitatory and Inhibitory Synapses

Influenza Virus

Chloroplast

RecA and DNA

CytoSkeleton

Transfer RNA and Gag Protein

Autophagy

Biosites: Nucleus

Biosites: Blood Plasma

Ebola Virus

Collagen and Extracellular Matrix

Influenza Vaccine

SARS-CoV-2 Fusion

Lipid Droplets

Phage-based COVID-19 Vaccine

Casein Micelle and Fat Globule in Milk

Myelin

Red Blood Cell Cytoskeleton

JCVI-syn3A Minimal Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Measles Virus Proteins

Kinetochore

SARS-CoV-2 and Neutralizing Antibodies

Immunological Synapse

Biosites: Muscle

Caulobacter Polar Microdomain

Escherichia coli

Biosites: Basement Membrane

Zika Virus

Blood

SARS-CoV-2 mRNA Vaccine