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.

B-DNA

Aspartate Transcarbamoylase (ATCase)

Carboxypeptidase A

DNA

Lysozyme (488)

Transfer Ribonucleic Acid (tRNA)

Lysozyme (512)

Hemoglobin (1000)

Deoxyribonucleic Acid (DNA)

Myoglobin Fold

Myohemerythrin

Lac Repressor

Oxyhemoglobin

Hemoglobin

TATA-Binding Protein (TBP)

A-DNA

Trypsin

Cytochrome c

Deoxyhemoglobin

Collagen

Cytochrome c (unbound)

Ribonuclease S

Myoglobin

Tomato Bushy Stunt Virus (TBSV)

Crambin

Hemoglobin S

Induced Lac Repressor

Immunoglobulin G (IgG)

Intermolecular Contacts in Hemoglobin S

DPG-Hemoglobin Complex

Z-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

Biosites: Red Blood Cell

Autophagy

Vascular Endothelial Growth Factor (VegF) Signaling

Caulobacter Polar Microdomain

Poliovirus Neutralization

Chloroplast

Influenza Vaccine

Transfer RNA and Gag Protein

HIV-Infected Cell

Ebola Virus

SARS-CoV-2 mRNA Vaccine

Zika Virus

Respiratory Droplet

Collagen and Extracellular Matrix

Casein Micelle and Fat Globule in Milk

Cellulose Synthase

HIV Vaccine

Immunological Synapse

Kinetochore

Model of a Mycoplasma Cell

Myelin

Abiogenesis

Coronavirus Life Cycle

Bacteriophage T4 Infection

Escherichia coli

Escherichia coli Bacterium

Biosites: Nucleus

HIV in Blood Plasma

Red Blood Cell Cytoskeleton

Excitatory and Inhibitory Synapses

Measles Virus Proteins

Phage-based COVID-19 Vaccine

Mycoplasma mycoides

Last Universal Common Ancestor

Coronavirus

Influenza Virus

SARS-CoV-2 and Neutralizing Antibodies

Insulin Action

Biosites: Basement Membrane

JCVI-syn3A Minimal Cell

Insulin Release

SARS-CoV-2 Fusion

Lipid Droplets

Myoglobin in a Whale Muscle Cell

CytoSkeleton

Blood

Biosites: Muscle

RecA and DNA

Biosites: Blood Plasma

Biosites: Cytoplasm