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.

Aspartate Transcarbamoylase (ATCase)

Tomato Bushy Stunt Virus (TBSV)

Collagen

Hemoglobin S

Oxyhemoglobin

TATA-Binding Protein (TBP)

Transfer Ribonucleic Acid (tRNA)

Induced Lac Repressor

Z-DNA

Lac Repressor

A-DNA

Lysozyme (488)

Hemoglobin

Trypsin

Myoglobin Fold

DNA

Lysozyme (512)

Cytochrome c (unbound)

Intermolecular Contacts in Hemoglobin S

Deoxyribonucleic Acid (DNA)

Myohemerythrin

DPG-Hemoglobin Complex

Carboxypeptidase A

Deoxyhemoglobin

Immunoglobulin G (IgG)

B-DNA

Ribonuclease S

Cytochrome c

Hemoglobin (1000)

Myoglobin

Crambin

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

Coronavirus

Zika Virus

Biosites: Nucleus

RecA and DNA

Cellulose Synthase

Biosites: Red Blood Cell

Escherichia coli

Insulin Release

Autophagy

Measles Virus Proteins

CytoSkeleton

Model of a Mycoplasma Cell

HIV Vaccine

Respiratory Droplet

Abiogenesis

Last Universal Common Ancestor

Escherichia coli Bacterium

Red Blood Cell Cytoskeleton

Mycoplasma mycoides

Biosites: Muscle

Lipid Droplets

Myoglobin in a Whale Muscle Cell

Biosites: Cytoplasm

SARS-CoV-2 Fusion

Collagen and Extracellular Matrix

Ebola Virus

Poliovirus Neutralization

Insulin Action

SARS-CoV-2 mRNA Vaccine

Vascular Endothelial Growth Factor (VegF) Signaling

Influenza Vaccine

Chloroplast

Coronavirus Life Cycle

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Basement Membrane

Biosites: Blood Plasma

HIV-Infected Cell

JCVI-syn3A Minimal Cell

Myelin

Caulobacter Polar Microdomain

Kinetochore

Influenza Virus

Transfer RNA and Gag Protein

HIV in Blood Plasma

Bacteriophage T4 Infection

Immunological Synapse

Casein Micelle and Fat Globule in Milk

Phage-based COVID-19 Vaccine

Excitatory and Inhibitory Synapses

Blood