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)

Myoglobin

Myoglobin Fold

Lysozyme (512)

Deoxyhemoglobin

TATA-Binding Protein (TBP)

DNA

B-DNA

Oxyhemoglobin

DPG-Hemoglobin Complex

Lysozyme (488)

A-DNA

Cytochrome c

Deoxyribonucleic Acid (DNA)

Trypsin

Hemoglobin S

Collagen

Hemoglobin

Z-DNA

Lac Repressor

Myohemerythrin

Ribonuclease S

Intermolecular Contacts in Hemoglobin S

Cytochrome c (unbound)

Crambin

Carboxypeptidase A

Transfer Ribonucleic Acid (tRNA)

Induced Lac Repressor

Hemoglobin (1000)

Tomato Bushy Stunt Virus (TBSV)

Immunoglobulin G (IgG)

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

Vascular Endothelial Growth Factor (VegF) Signaling

Respiratory Droplet

Biosites: Blood Plasma

Influenza Virus

Coronavirus

Zika Virus

JCVI-syn3A Minimal Cell

Phage-based COVID-19 Vaccine

Bacteriophage T4 Infection

Lipid Droplets

Caulobacter Polar Microdomain

Biosites: Nucleus

Insulin Release

Escherichia coli

HIV-Infected Cell

Abiogenesis

Myelin

SARS-CoV-2 mRNA Vaccine

Biosites: Muscle

Ebola Virus

Red Blood Cell Cytoskeleton

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Red Blood Cell

Model of a Mycoplasma Cell

Biosites: Basement Membrane

Casein Micelle and Fat Globule in Milk

Myoglobin in a Whale Muscle Cell

Measles Virus Proteins

Kinetochore

Autophagy

Mycoplasma mycoides

Collagen and Extracellular Matrix

Poliovirus Neutralization

Biosites: Cytoplasm

Excitatory and Inhibitory Synapses

Blood

Chloroplast

SARS-CoV-2 Fusion

Influenza Vaccine

Immunological Synapse

HIV Vaccine

HIV in Blood Plasma

Transfer RNA and Gag Protein

CytoSkeleton

Insulin Action

Last Universal Common Ancestor

Coronavirus Life Cycle

Cellulose Synthase

Escherichia coli Bacterium

RecA and DNA