Molecule of the Month
October 2026

Celebrating 55 Years of the PDB

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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.

A-DNA

Tomato Bushy Stunt Virus (TBSV)

Induced Lac Repressor

Immunoglobulin G (IgG)

B-DNA

Hemoglobin S

Myohemerythrin

Deoxyribonucleic Acid (DNA)

Transfer Ribonucleic Acid (tRNA)

Cytochrome c (unbound)

Crambin

Cytochrome c

Lac Repressor

Z-DNA

Lysozyme (512)

Aspartate Transcarbamoylase (ATCase)

Deoxyhemoglobin

DPG-Hemoglobin Complex

Intermolecular Contacts in Hemoglobin S

Myoglobin

Myoglobin Fold

TATA-Binding Protein (TBP)

Hemoglobin

Lysozyme (488)

Carboxypeptidase A

Trypsin

Hemoglobin (1000)

DNA

Collagen

Ribonuclease S

Oxyhemoglobin

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

Caulobacter Polar Microdomain

Coronavirus

Phage-based COVID-19 Vaccine

Ebola Virus

Mycoplasma mycoides

Poliovirus Neutralization

Influenza Virus

Immunological Synapse

SARS-CoV-2 mRNA Vaccine

Casein Micelle and Fat Globule in Milk

Abiogenesis

Biosites: Basement Membrane

Escherichia coli

Last Universal Common Ancestor

SARS-CoV-2 Fusion

Insulin Release

Autophagy

RecA and DNA

Biosites: Red Blood Cell

HIV in Blood Plasma

CytoSkeleton

Biosites: Blood Plasma

Transfer RNA and Gag Protein

Influenza Vaccine

Respiratory Droplet

Biosites: Cytoplasm

Model of a Mycoplasma Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Insulin Action

Red Blood Cell Cytoskeleton

Lipid Droplets

Measles Virus Proteins

Blood

HIV Vaccine

Collagen and Extracellular Matrix

Chloroplast

Myoglobin in a Whale Muscle Cell

Coronavirus Life Cycle

Kinetochore

Zika Virus

JCVI-syn3A Minimal Cell

Escherichia coli Bacterium

Cellulose Synthase

HIV-Infected Cell

Myelin

Bacteriophage T4 Infection

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Muscle

Biosites: Nucleus

Excitatory and Inhibitory Synapses