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.

Z-DNA

Hemoglobin

Crambin

Lysozyme (512)

Myoglobin Fold

Transfer Ribonucleic Acid (tRNA)

Aspartate Transcarbamoylase (ATCase)

Myoglobin

Deoxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Immunoglobulin G (IgG)

B-DNA

Lac Repressor

Myohemerythrin

Collagen

Induced Lac Repressor

Lysozyme (488)

Ribonuclease S

Cytochrome c

Oxyhemoglobin

DPG-Hemoglobin Complex

A-DNA

Deoxyribonucleic Acid (DNA)

Tomato Bushy Stunt Virus (TBSV)

Cytochrome c (unbound)

TATA-Binding Protein (TBP)

Carboxypeptidase A

Hemoglobin (1000)

DNA

Hemoglobin S

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

Abiogenesis

Myelin

Chloroplast

Poliovirus Neutralization

Zika Virus

SARS-CoV-2 mRNA Vaccine

Collagen and Extracellular Matrix

Coronavirus

Ebola Virus

Escherichia coli Bacterium

HIV Vaccine

Biosites: Basement Membrane

HIV in Blood Plasma

Bacteriophage T4 Infection

Kinetochore

Respiratory Droplet

Biosites: Nucleus

Insulin Action

Mycoplasma mycoides

Escherichia coli

Lipid Droplets

JCVI-syn3A Minimal Cell

Influenza Vaccine

Insulin Release

Biosites: Red Blood Cell

Phage-based COVID-19 Vaccine

SARS-CoV-2 Fusion

Model of a Mycoplasma Cell

Red Blood Cell Cytoskeleton

Vascular Endothelial Growth Factor (VegF) Signaling

Blood

Transfer RNA and Gag Protein

Caulobacter Polar Microdomain

Last Universal Common Ancestor

Immunological Synapse

Biosites: Muscle

RecA and DNA

Myoglobin in a Whale Muscle Cell

SARS-CoV-2 and Neutralizing Antibodies

CytoSkeleton

Measles Virus Proteins

Excitatory and Inhibitory Synapses

Biosites: Blood Plasma

Influenza Virus

Casein Micelle and Fat Globule in Milk

Biosites: Cytoplasm

Coronavirus Life Cycle

Autophagy

HIV-Infected Cell

Cellulose Synthase