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.

A-DNA

Z-DNA

Collagen

Oxyhemoglobin

Myohemerythrin

Aspartate Transcarbamoylase (ATCase)

Immunoglobulin G (IgG)

Ribonuclease S

Hemoglobin

Induced Lac Repressor

Carboxypeptidase A

Crambin

Tomato Bushy Stunt Virus (TBSV)

DNA

Lysozyme (488)

Cytochrome c (unbound)

Myoglobin

Transfer Ribonucleic Acid (tRNA)

Hemoglobin (1000)

B-DNA

Hemoglobin S

Deoxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Cytochrome c

Lac Repressor

Deoxyribonucleic Acid (DNA)

Lysozyme (512)

TATA-Binding Protein (TBP)

Myoglobin Fold

Trypsin

DPG-Hemoglobin Complex

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: Muscle

Biosites: Basement Membrane

Mycoplasma mycoides

CytoSkeleton

Phage-based COVID-19 Vaccine

Vascular Endothelial Growth Factor (VegF) Signaling

Immunological Synapse

Biosites: Cytoplasm

Poliovirus Neutralization

Chloroplast

Biosites: Nucleus

Red Blood Cell Cytoskeleton

SARS-CoV-2 and Neutralizing Antibodies

Excitatory and Inhibitory Synapses

Abiogenesis

Escherichia coli

Bacteriophage T4 Infection

Measles Virus Proteins

Last Universal Common Ancestor

RecA and DNA

Coronavirus Life Cycle

HIV Vaccine

Biosites: Blood Plasma

Autophagy

Coronavirus

Casein Micelle and Fat Globule in Milk

Model of a Mycoplasma Cell

Ebola Virus

SARS-CoV-2 Fusion

Respiratory Droplet

Lipid Droplets

HIV in Blood Plasma

Insulin Action

Collagen and Extracellular Matrix

Insulin Release

Transfer RNA and Gag Protein

Influenza Virus

Cellulose Synthase

Blood

Escherichia coli Bacterium

JCVI-syn3A Minimal Cell

Biosites: Red Blood Cell

Zika Virus

Kinetochore

Myelin

Influenza Vaccine

HIV-Infected Cell

Myoglobin in a Whale Muscle Cell

Caulobacter Polar Microdomain

SARS-CoV-2 mRNA Vaccine