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)

A-DNA

Lysozyme (512)

Collagen

Ribonuclease S

Deoxyhemoglobin

Trypsin

Myoglobin

Aspartate Transcarbamoylase (ATCase)

Z-DNA

Deoxyribonucleic Acid (DNA)

DPG-Hemoglobin Complex

Hemoglobin

Myoglobin Fold

Myohemerythrin

Carboxypeptidase A

Intermolecular Contacts in Hemoglobin S

Hemoglobin S

Cytochrome c

Transfer Ribonucleic Acid (tRNA)

Immunoglobulin G (IgG)

Hemoglobin (1000)

Cytochrome c (unbound)

DNA

Oxyhemoglobin

B-DNA

Induced Lac Repressor

Lac Repressor

TATA-Binding Protein (TBP)

Crambin

Lysozyme (488)

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

Measles Virus Proteins

Coronavirus Life Cycle

HIV-Infected Cell

Biosites: Nucleus

Ebola Virus

Coronavirus

Bacteriophage T4 Infection

Insulin Action

RecA and DNA

CytoSkeleton

Cellulose Synthase

Casein Micelle and Fat Globule in Milk

Zika Virus

Escherichia coli Bacterium

Respiratory Droplet

HIV in Blood Plasma

JCVI-syn3A Minimal Cell

Poliovirus Neutralization

Lipid Droplets

Excitatory and Inhibitory Synapses

Chloroplast

Biosites: Cytoplasm

Biosites: Red Blood Cell

Biosites: Muscle

HIV Vaccine

Myoglobin in a Whale Muscle Cell

Myelin

Biosites: Basement Membrane

Collagen and Extracellular Matrix

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli

Transfer RNA and Gag Protein

Caulobacter Polar Microdomain

Phage-based COVID-19 Vaccine

Model of a Mycoplasma Cell

Abiogenesis

Insulin Release

Mycoplasma mycoides

Blood

SARS-CoV-2 Fusion

Vascular Endothelial Growth Factor (VegF) Signaling

Autophagy

SARS-CoV-2 mRNA Vaccine

Immunological Synapse

Influenza Vaccine

Last Universal Common Ancestor

Kinetochore

Influenza Virus

Biosites: Blood Plasma

Red Blood Cell Cytoskeleton