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.

Collagen

Deoxyribonucleic Acid (DNA)

Z-DNA

A-DNA

Aspartate Transcarbamoylase (ATCase)

Myoglobin

Cytochrome c (unbound)

TATA-Binding Protein (TBP)

Oxyhemoglobin

Immunoglobulin G (IgG)

DNA

Induced Lac Repressor

Hemoglobin

Crambin

DPG-Hemoglobin Complex

Lac Repressor

Deoxyhemoglobin

Lysozyme (488)

Intermolecular Contacts in Hemoglobin S

Ribonuclease S

Hemoglobin S

Transfer Ribonucleic Acid (tRNA)

Lysozyme (512)

B-DNA

Carboxypeptidase A

Hemoglobin (1000)

Cytochrome c

Myoglobin Fold

Tomato Bushy Stunt Virus (TBSV)

Myohemerythrin

Trypsin

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

HIV Vaccine

CytoSkeleton

Caulobacter Polar Microdomain

Ebola Virus

Last Universal Common Ancestor

Coronavirus

Collagen and Extracellular Matrix

Phage-based COVID-19 Vaccine

Escherichia coli Bacterium

Biosites: Red Blood Cell

Poliovirus Neutralization

Measles Virus Proteins

RecA and DNA

Escherichia coli

Vascular Endothelial Growth Factor (VegF) Signaling

Autophagy

Myelin

HIV-Infected Cell

Coronavirus Life Cycle

Myoglobin in a Whale Muscle Cell

Chloroplast

JCVI-syn3A Minimal Cell

Biosites: Cytoplasm

HIV in Blood Plasma

Abiogenesis

SARS-CoV-2 mRNA Vaccine

Insulin Release

Biosites: Muscle

Bacteriophage T4 Infection

Blood

SARS-CoV-2 Fusion

Kinetochore

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Nucleus

Lipid Droplets

Transfer RNA and Gag Protein

Mycoplasma mycoides

Zika Virus

Red Blood Cell Cytoskeleton

Biosites: Basement Membrane

Casein Micelle and Fat Globule in Milk

Respiratory Droplet

Biosites: Blood Plasma

Insulin Action

Influenza Virus

Excitatory and Inhibitory Synapses

Influenza Vaccine

Immunological Synapse

Model of a Mycoplasma Cell

Cellulose Synthase