Molecule of the Month
October 2026

Celebrating 55 Years of the PDB

Enabling the rapid evolution of protein structure prediction and design

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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.

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

DPG-Hemoglobin Complex

A-DNA

Lysozyme (488)

Trypsin

Myoglobin Fold

Immunoglobulin G (IgG)

DNA

Transfer Ribonucleic Acid (tRNA)

Induced Lac Repressor

Cytochrome c

Lysozyme (512)

Carboxypeptidase A

Crambin

Z-DNA

TATA-Binding Protein (TBP)

Hemoglobin (1000)

B-DNA

Deoxyribonucleic Acid (DNA)

Cytochrome c (unbound)

Oxyhemoglobin

Ribonuclease S

Hemoglobin S

Myohemerythrin

Aspartate Transcarbamoylase (ATCase)

Deoxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Hemoglobin

Collagen

Myoglobin

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

Influenza Virus

Cellulose Synthase

Excitatory and Inhibitory Synapses

Myelin

Caulobacter Polar Microdomain

Ebola Virus

SARS-CoV-2 Fusion

Autophagy

Biosites: Basement Membrane

Mycoplasma mycoides

Myoglobin in a Whale Muscle Cell

Poliovirus Neutralization

Biosites: Nucleus

Phage-based COVID-19 Vaccine

Biosites: Cytoplasm

Insulin Release

SARS-CoV-2 mRNA Vaccine

Coronavirus

SARS-CoV-2 and Neutralizing Antibodies

Model of a Mycoplasma Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Zika Virus

JCVI-syn3A Minimal Cell

Insulin Action

Influenza Vaccine

Biosites: Red Blood Cell

Last Universal Common Ancestor

Biosites: Blood Plasma

Coronavirus Life Cycle

Escherichia coli

Bacteriophage T4 Infection

Respiratory Droplet

Blood

Abiogenesis

CytoSkeleton

HIV in Blood Plasma

Biosites: Muscle

Red Blood Cell Cytoskeleton

Chloroplast

Escherichia coli Bacterium

RecA and DNA

HIV Vaccine

Immunological Synapse

Casein Micelle and Fat Globule in Milk

Kinetochore

HIV-Infected Cell

Measles Virus Proteins

Collagen and Extracellular Matrix

Lipid Droplets

Transfer RNA and Gag Protein