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

DPG-Hemoglobin Complex

Hemoglobin S

DNA

Tomato Bushy Stunt Virus (TBSV)

TATA-Binding Protein (TBP)

Hemoglobin

Intermolecular Contacts in Hemoglobin S

Myoglobin Fold

Z-DNA

Immunoglobulin G (IgG)

Induced Lac Repressor

Crambin

Cytochrome c

Deoxyribonucleic Acid (DNA)

B-DNA

Aspartate Transcarbamoylase (ATCase)

Myoglobin

Ribonuclease S

Hemoglobin (1000)

Collagen

Transfer Ribonucleic Acid (tRNA)

Lac Repressor

Oxyhemoglobin

Lysozyme (512)

Myohemerythrin

Deoxyhemoglobin

Cytochrome c (unbound)

A-DNA

Carboxypeptidase A

Lysozyme (488)

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

Blood

Kinetochore

Red Blood Cell Cytoskeleton

Escherichia coli Bacterium

Coronavirus Life Cycle

Zika Virus

SARS-CoV-2 mRNA Vaccine

Last Universal Common Ancestor

Biosites: Basement Membrane

Model of a Mycoplasma Cell

Casein Micelle and Fat Globule in Milk

SARS-CoV-2 Fusion

Influenza Vaccine

Cellulose Synthase

JCVI-syn3A Minimal Cell

Ebola Virus

Lipid Droplets

HIV Vaccine

Autophagy

Caulobacter Polar Microdomain

Measles Virus Proteins

Collagen and Extracellular Matrix

RecA and DNA

Insulin Action

Biosites: Nucleus

Poliovirus Neutralization

Abiogenesis

Coronavirus

Biosites: Muscle

SARS-CoV-2 and Neutralizing Antibodies

Bacteriophage T4 Infection

Biosites: Red Blood Cell

HIV-Infected Cell

CytoSkeleton

Escherichia coli

Influenza Virus

HIV in Blood Plasma

Mycoplasma mycoides

Chloroplast

Vascular Endothelial Growth Factor (VegF) Signaling

Transfer RNA and Gag Protein

Biosites: Cytoplasm

Myelin

Insulin Release

Excitatory and Inhibitory Synapses

Immunological Synapse

Respiratory Droplet

Myoglobin in a Whale Muscle Cell

Biosites: Blood Plasma

Phage-based COVID-19 Vaccine