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.

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

Deoxyhemoglobin

TATA-Binding Protein (TBP)

Oxyhemoglobin

Cytochrome c (unbound)

Crambin

B-DNA

Hemoglobin (1000)

Aspartate Transcarbamoylase (ATCase)

Carboxypeptidase A

Trypsin

Myohemerythrin

A-DNA

Immunoglobulin G (IgG)

Z-DNA

DNA

Lysozyme (512)

Induced Lac Repressor

Myoglobin Fold

Collagen

Transfer Ribonucleic Acid (tRNA)

Cytochrome c

Lysozyme (488)

Ribonuclease S

DPG-Hemoglobin Complex

Hemoglobin

Myoglobin

Intermolecular Contacts in Hemoglobin S

Hemoglobin S

Deoxyribonucleic Acid (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

Cellulose Synthase

HIV-Infected Cell

Biosites: Blood Plasma

Biosites: Muscle

Ebola Virus

Measles Virus Proteins

Biosites: Red Blood Cell

HIV in Blood Plasma

Biosites: Basement Membrane

Autophagy

Zika Virus

Kinetochore

RecA and DNA

Lipid Droplets

SARS-CoV-2 and Neutralizing Antibodies

Poliovirus Neutralization

Blood

Bacteriophage T4 Infection

CytoSkeleton

Myelin

Casein Micelle and Fat Globule in Milk

Caulobacter Polar Microdomain

Transfer RNA and Gag Protein

Coronavirus

Influenza Virus

Escherichia coli Bacterium

Influenza Vaccine

SARS-CoV-2 Fusion

SARS-CoV-2 mRNA Vaccine

Collagen and Extracellular Matrix

Insulin Release

Last Universal Common Ancestor

Red Blood Cell Cytoskeleton

Myoglobin in a Whale Muscle Cell

HIV Vaccine

Immunological Synapse

Chloroplast

Phage-based COVID-19 Vaccine

Excitatory and Inhibitory Synapses

Model of a Mycoplasma Cell

Coronavirus Life Cycle

Abiogenesis

Biosites: Cytoplasm

JCVI-syn3A Minimal Cell

Respiratory Droplet

Escherichia coli

Insulin Action

Mycoplasma mycoides

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Nucleus