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)

Lac Repressor

B-DNA

Hemoglobin S

DNA

Carboxypeptidase A

Lysozyme (512)

Myoglobin

Crambin

Z-DNA

Collagen

Aspartate Transcarbamoylase (ATCase)

Tomato Bushy Stunt Virus (TBSV)

Cytochrome c

Hemoglobin

Trypsin

TATA-Binding Protein (TBP)

Intermolecular Contacts in Hemoglobin S

Myohemerythrin

Lysozyme (488)

Cytochrome c (unbound)

Transfer Ribonucleic Acid (tRNA)

Ribonuclease S

Immunoglobulin G (IgG)

A-DNA

Oxyhemoglobin

Hemoglobin (1000)

DPG-Hemoglobin Complex

Myoglobin Fold

Deoxyhemoglobin

Induced Lac Repressor

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

SARS-CoV-2 Fusion

Biosites: Blood Plasma

Phage-based COVID-19 Vaccine

Zika Virus

Autophagy

Vascular Endothelial Growth Factor (VegF) Signaling

Chloroplast

Insulin Release

Respiratory Droplet

Biosites: Cytoplasm

Coronavirus

JCVI-syn3A Minimal Cell

Mycoplasma mycoides

Abiogenesis

Collagen and Extracellular Matrix

Bacteriophage T4 Infection

Transfer RNA and Gag Protein

Last Universal Common Ancestor

Kinetochore

Red Blood Cell Cytoskeleton

CytoSkeleton

Blood

Measles Virus Proteins

Biosites: Red Blood Cell

Lipid Droplets

Cellulose Synthase

Excitatory and Inhibitory Synapses

Myelin

Myoglobin in a Whale Muscle Cell

Escherichia coli

Insulin Action

Model of a Mycoplasma Cell

RecA and DNA

HIV Vaccine

HIV in Blood Plasma

Caulobacter Polar Microdomain

Biosites: Basement Membrane

SARS-CoV-2 mRNA Vaccine

Escherichia coli Bacterium

Biosites: Nucleus

Ebola Virus

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Muscle

Coronavirus Life Cycle

Immunological Synapse

Influenza Vaccine

Poliovirus Neutralization

Casein Micelle and Fat Globule in Milk

Influenza Virus

HIV-Infected Cell