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.

Trypsin

Intermolecular Contacts in Hemoglobin S

Deoxyhemoglobin

Myohemerythrin

Oxyhemoglobin

Induced Lac Repressor

B-DNA

Aspartate Transcarbamoylase (ATCase)

Myoglobin Fold

Myoglobin

Transfer Ribonucleic Acid (tRNA)

Cytochrome c (unbound)

Deoxyribonucleic Acid (DNA)

Carboxypeptidase A

Immunoglobulin G (IgG)

Cytochrome c

Z-DNA

Collagen

Hemoglobin S

Lysozyme (512)

A-DNA

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin (1000)

Lac Repressor

DPG-Hemoglobin Complex

Hemoglobin

Lysozyme (488)

TATA-Binding Protein (TBP)

Ribonuclease S

Crambin

DNA

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

Autophagy

Measles Virus Proteins

Mycoplasma mycoides

Abiogenesis

Insulin Release

Influenza Virus

Myoglobin in a Whale Muscle Cell

Respiratory Droplet

HIV in Blood Plasma

Poliovirus Neutralization

Insulin Action

SARS-CoV-2 Fusion

Last Universal Common Ancestor

Phage-based COVID-19 Vaccine

HIV Vaccine

RecA and DNA

SARS-CoV-2 mRNA Vaccine

Escherichia coli

Biosites: Basement Membrane

Cellulose Synthase

Lipid Droplets

Red Blood Cell Cytoskeleton

Kinetochore

SARS-CoV-2 and Neutralizing Antibodies

Influenza Vaccine

Collagen and Extracellular Matrix

Coronavirus

Casein Micelle and Fat Globule in Milk

Myelin

Ebola Virus

Zika Virus

Biosites: Cytoplasm

CytoSkeleton

Model of a Mycoplasma Cell

Escherichia coli Bacterium

Biosites: Nucleus

Caulobacter Polar Microdomain

Excitatory and Inhibitory Synapses

Blood

Transfer RNA and Gag Protein

Biosites: Blood Plasma

Chloroplast

HIV-Infected Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Muscle

Immunological Synapse

Bacteriophage T4 Infection

Coronavirus Life Cycle

Biosites: Red Blood Cell

JCVI-syn3A Minimal Cell