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.

Crambin

Trypsin

Intermolecular Contacts in Hemoglobin S

Z-DNA

Myoglobin

B-DNA

Collagen

TATA-Binding Protein (TBP)

Transfer Ribonucleic Acid (tRNA)

Hemoglobin S

Lysozyme (512)

Ribonuclease S

Hemoglobin

Oxyhemoglobin

Lac Repressor

Carboxypeptidase A

Cytochrome c (unbound)

Deoxyhemoglobin

Aspartate Transcarbamoylase (ATCase)

Cytochrome c

Lysozyme (488)

Myohemerythrin

Myoglobin Fold

Hemoglobin (1000)

Immunoglobulin G (IgG)

Tomato Bushy Stunt Virus (TBSV)

DPG-Hemoglobin Complex

DNA

Deoxyribonucleic Acid (DNA)

Induced Lac Repressor

A-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

HIV Vaccine

Biosites: Blood Plasma

Chloroplast

Mycoplasma mycoides

Lipid Droplets

Bacteriophage T4 Infection

Ebola Virus

Insulin Release

Biosites: Cytoplasm

Caulobacter Polar Microdomain

HIV in Blood Plasma

Biosites: Red Blood Cell

RecA and DNA

Immunological Synapse

Biosites: Muscle

Kinetochore

Abiogenesis

Insulin Action

Coronavirus

Casein Micelle and Fat Globule in Milk

Vascular Endothelial Growth Factor (VegF) Signaling

CytoSkeleton

HIV-Infected Cell

Myoglobin in a Whale Muscle Cell

Blood

Cellulose Synthase

Autophagy

Biosites: Basement Membrane

Measles Virus Proteins

Influenza Virus

Zika Virus

SARS-CoV-2 and Neutralizing Antibodies

Red Blood Cell Cytoskeleton

SARS-CoV-2 mRNA Vaccine

Escherichia coli

Escherichia coli Bacterium

JCVI-syn3A Minimal Cell

Respiratory Droplet

Collagen and Extracellular Matrix

Influenza Vaccine

Model of a Mycoplasma Cell

SARS-CoV-2 Fusion

Biosites: Nucleus

Poliovirus Neutralization

Excitatory and Inhibitory Synapses

Phage-based COVID-19 Vaccine

Last Universal Common Ancestor

Transfer RNA and Gag Protein

Coronavirus Life Cycle

Myelin