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.

Z-DNA

Hemoglobin

Aspartate Transcarbamoylase (ATCase)

Lysozyme (488)

Ribonuclease S

Immunoglobulin G (IgG)

Oxyhemoglobin

Cytochrome c

Trypsin

Hemoglobin (1000)

Intermolecular Contacts in Hemoglobin S

Transfer Ribonucleic Acid (tRNA)

Lysozyme (512)

Collagen

Lac Repressor

Myoglobin

Myoglobin Fold

A-DNA

Deoxyribonucleic Acid (DNA)

Carboxypeptidase A

DNA

Hemoglobin S

Crambin

Deoxyhemoglobin

Cytochrome c (unbound)

B-DNA

DPG-Hemoglobin Complex

Tomato Bushy Stunt Virus (TBSV)

TATA-Binding Protein (TBP)

Myohemerythrin

Induced Lac Repressor

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

Insulin Release

SARS-CoV-2 mRNA Vaccine

Biosites: Blood Plasma

Escherichia coli

Influenza Virus

HIV Vaccine

Insulin Action

Autophagy

Last Universal Common Ancestor

Red Blood Cell Cytoskeleton

Mycoplasma mycoides

Coronavirus

Chloroplast

Kinetochore

Caulobacter Polar Microdomain

SARS-CoV-2 Fusion

Biosites: Red Blood Cell

Myelin

Zika Virus

Measles Virus Proteins

Escherichia coli Bacterium

Cellulose Synthase

Abiogenesis

Collagen and Extracellular Matrix

Biosites: Cytoplasm

Immunological Synapse

Blood

Biosites: Basement Membrane

Ebola Virus

Casein Micelle and Fat Globule in Milk

HIV in Blood Plasma

RecA and DNA

SARS-CoV-2 and Neutralizing Antibodies

Respiratory Droplet

Influenza Vaccine

Lipid Droplets

Phage-based COVID-19 Vaccine

Poliovirus Neutralization

Transfer RNA and Gag Protein

Vascular Endothelial Growth Factor (VegF) Signaling

CytoSkeleton

Biosites: Nucleus

Biosites: Muscle

Model of a Mycoplasma Cell

JCVI-syn3A Minimal Cell

HIV-Infected Cell

Myoglobin in a Whale Muscle Cell

Excitatory and Inhibitory Synapses

Coronavirus Life Cycle

Bacteriophage T4 Infection