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.

Ribonuclease S

Intermolecular Contacts in Hemoglobin S

B-DNA

Immunoglobulin G (IgG)

Collagen

Myoglobin Fold

DPG-Hemoglobin Complex

Cytochrome c

Tomato Bushy Stunt Virus (TBSV)

Deoxyribonucleic Acid (DNA)

Myohemerythrin

TATA-Binding Protein (TBP)

Trypsin

Lac Repressor

Induced Lac Repressor

Hemoglobin (1000)

Transfer Ribonucleic Acid (tRNA)

Lysozyme (512)

Carboxypeptidase A

Myoglobin

Cytochrome c (unbound)

Hemoglobin

Z-DNA

Aspartate Transcarbamoylase (ATCase)

Crambin

Lysozyme (488)

DNA

Hemoglobin S

A-DNA

Oxyhemoglobin

Deoxyhemoglobin

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

Phage-based COVID-19 Vaccine

Kinetochore

Red Blood Cell Cytoskeleton

Insulin Action

Myoglobin in a Whale Muscle Cell

Influenza Vaccine

Biosites: Blood Plasma

Biosites: Cytoplasm

Immunological Synapse

Casein Micelle and Fat Globule in Milk

HIV in Blood Plasma

Excitatory and Inhibitory Synapses

Blood

Coronavirus Life Cycle

Insulin Release

Escherichia coli

HIV-Infected Cell

Lipid Droplets

Respiratory Droplet

SARS-CoV-2 mRNA Vaccine

RecA and DNA

Biosites: Muscle

Poliovirus Neutralization

Biosites: Red Blood Cell

Cellulose Synthase

Caulobacter Polar Microdomain

Myelin

SARS-CoV-2 and Neutralizing Antibodies

Abiogenesis

Influenza Virus

SARS-CoV-2 Fusion

Biosites: Nucleus

Autophagy

Model of a Mycoplasma Cell

Biosites: Basement Membrane

Vascular Endothelial Growth Factor (VegF) Signaling

Collagen and Extracellular Matrix

Chloroplast

HIV Vaccine

Last Universal Common Ancestor

Measles Virus Proteins

Mycoplasma mycoides

Transfer RNA and Gag Protein

Bacteriophage T4 Infection

CytoSkeleton

Ebola Virus

Coronavirus

Zika Virus

JCVI-syn3A Minimal Cell

Escherichia coli Bacterium