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

Cytochrome c (unbound)

DPG-Hemoglobin Complex

Myoglobin

Lac Repressor

Hemoglobin

Crambin

TATA-Binding Protein (TBP)

Oxyhemoglobin

Deoxyhemoglobin

Collagen

B-DNA

Trypsin

Lysozyme (512)

DNA

Myohemerythrin

Immunoglobulin G (IgG)

Carboxypeptidase A

Deoxyribonucleic Acid (DNA)

Hemoglobin (1000)

Myoglobin Fold

Lysozyme (488)

Aspartate Transcarbamoylase (ATCase)

Cytochrome c

Transfer Ribonucleic Acid (tRNA)

Intermolecular Contacts in Hemoglobin S

Induced Lac Repressor

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin S

Z-DNA

A-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

Insulin Release

Ebola Virus

Coronavirus Life Cycle

HIV in Blood Plasma

Poliovirus Neutralization

Cellulose Synthase

Escherichia coli Bacterium

Phage-based COVID-19 Vaccine

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli

Model of a Mycoplasma Cell

Excitatory and Inhibitory Synapses

Red Blood Cell Cytoskeleton

Blood

CytoSkeleton

Biosites: Muscle

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Basement Membrane

Influenza Vaccine

Abiogenesis

Last Universal Common Ancestor

SARS-CoV-2 Fusion

Biosites: Cytoplasm

Mycoplasma mycoides

Biosites: Red Blood Cell

Insulin Action

HIV Vaccine

Lipid Droplets

Influenza Virus

Kinetochore

Immunological Synapse

Chloroplast

Myoglobin in a Whale Muscle Cell

JCVI-syn3A Minimal Cell

Measles Virus Proteins

Casein Micelle and Fat Globule in Milk

Collagen and Extracellular Matrix

RecA and DNA

Biosites: Blood Plasma

SARS-CoV-2 mRNA Vaccine

Respiratory Droplet

Transfer RNA and Gag Protein

Biosites: Nucleus

Myelin

Zika Virus

Bacteriophage T4 Infection

Caulobacter Polar Microdomain

HIV-Infected Cell

Coronavirus