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.

Lysozyme (512)

Tomato Bushy Stunt Virus (TBSV)

Collagen

Oxyhemoglobin

Crambin

Lac Repressor

Myoglobin Fold

Hemoglobin

Trypsin

Hemoglobin (1000)

Myohemerythrin

Aspartate Transcarbamoylase (ATCase)

Transfer Ribonucleic Acid (tRNA)

Myoglobin

Deoxyhemoglobin

Ribonuclease S

Induced Lac Repressor

Hemoglobin S

Immunoglobulin G (IgG)

TATA-Binding Protein (TBP)

Cytochrome c (unbound)

DNA

Deoxyribonucleic Acid (DNA)

Intermolecular Contacts in Hemoglobin S

Carboxypeptidase A

Z-DNA

Cytochrome c

DPG-Hemoglobin Complex

A-DNA

Lysozyme (488)

B-DNA

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 Action

Escherichia coli Bacterium

Casein Micelle and Fat Globule in Milk

Abiogenesis

Insulin Release

Myoglobin in a Whale Muscle Cell

Phage-based COVID-19 Vaccine

CytoSkeleton

Last Universal Common Ancestor

Coronavirus

RecA and DNA

Immunological Synapse

JCVI-syn3A Minimal Cell

Influenza Virus

Biosites: Nucleus

Coronavirus Life Cycle

Transfer RNA and Gag Protein

Bacteriophage T4 Infection

Respiratory Droplet

Biosites: Cytoplasm

Autophagy

Biosites: Blood Plasma

Model of a Mycoplasma Cell

Myelin

Ebola Virus

Biosites: Muscle

Vascular Endothelial Growth Factor (VegF) Signaling

Poliovirus Neutralization

HIV-Infected Cell

Measles Virus Proteins

Blood

Mycoplasma mycoides

Excitatory and Inhibitory Synapses

Collagen and Extracellular Matrix

Biosites: Red Blood Cell

Chloroplast

Zika Virus

Escherichia coli

Influenza Vaccine

HIV in Blood Plasma

Red Blood Cell Cytoskeleton

Cellulose Synthase

SARS-CoV-2 and Neutralizing Antibodies

SARS-CoV-2 mRNA Vaccine

Caulobacter Polar Microdomain

HIV Vaccine

Biosites: Basement Membrane

Lipid Droplets

Kinetochore

SARS-CoV-2 Fusion