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.

Deoxyribonucleic Acid (DNA)

A-DNA

Aspartate Transcarbamoylase (ATCase)

Z-DNA

Carboxypeptidase A

Transfer Ribonucleic Acid (tRNA)

Induced Lac Repressor

Immunoglobulin G (IgG)

Hemoglobin S

Cytochrome c

Tomato Bushy Stunt Virus (TBSV)

Oxyhemoglobin

Crambin

Cytochrome c (unbound)

B-DNA

Hemoglobin

Lysozyme (512)

Intermolecular Contacts in Hemoglobin S

Ribonuclease S

Hemoglobin (1000)

Deoxyhemoglobin

Trypsin

DNA

TATA-Binding Protein (TBP)

DPG-Hemoglobin Complex

Myoglobin Fold

Collagen

Lac Repressor

Myoglobin

Lysozyme (488)

Myohemerythrin

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

Zika Virus

HIV in Blood Plasma

Collagen and Extracellular Matrix

Model of a Mycoplasma Cell

SARS-CoV-2 Fusion

Blood

Immunological Synapse

Biosites: Basement Membrane

CytoSkeleton

Insulin Action

Respiratory Droplet

Escherichia coli

Phage-based COVID-19 Vaccine

Last Universal Common Ancestor

Red Blood Cell Cytoskeleton

HIV Vaccine

SARS-CoV-2 mRNA Vaccine

Cellulose Synthase

Influenza Vaccine

Caulobacter Polar Microdomain

Biosites: Muscle

Myelin

Excitatory and Inhibitory Synapses

Influenza Virus

Vascular Endothelial Growth Factor (VegF) Signaling

Chloroplast

Biosites: Red Blood Cell

Biosites: Nucleus

Bacteriophage T4 Infection

Coronavirus

Measles Virus Proteins

Insulin Release

Transfer RNA and Gag Protein

Biosites: Blood Plasma

Escherichia coli Bacterium

Myoglobin in a Whale Muscle Cell

Casein Micelle and Fat Globule in Milk

HIV-Infected Cell

Autophagy

Poliovirus Neutralization

Ebola Virus

Biosites: Cytoplasm

Mycoplasma mycoides

RecA and DNA

JCVI-syn3A Minimal Cell

Abiogenesis

Coronavirus Life Cycle

SARS-CoV-2 and Neutralizing Antibodies

Lipid Droplets

Kinetochore