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.

Lysozyme (488)

Myoglobin

Lac Repressor

Trypsin

Oxyhemoglobin

Aspartate Transcarbamoylase (ATCase)

DNA

Tomato Bushy Stunt Virus (TBSV)

Carboxypeptidase A

Transfer Ribonucleic Acid (tRNA)

Ribonuclease S

Induced Lac Repressor

Z-DNA

Immunoglobulin G (IgG)

Deoxyhemoglobin

B-DNA

Deoxyribonucleic Acid (DNA)

Collagen

Hemoglobin

A-DNA

Intermolecular Contacts in Hemoglobin S

Hemoglobin (1000)

DPG-Hemoglobin Complex

Myohemerythrin

Cytochrome c (unbound)

Cytochrome c

Lysozyme (512)

Hemoglobin S

Crambin

TATA-Binding Protein (TBP)

Myoglobin Fold

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 Vaccine

Insulin Release

Cellulose Synthase

Biosites: Red Blood Cell

Measles Virus Proteins

Biosites: Muscle

Biosites: Basement Membrane

Immunological Synapse

HIV-Infected Cell

Respiratory Droplet

Mycoplasma mycoides

Last Universal Common Ancestor

Abiogenesis

Influenza Vaccine

Escherichia coli

Chloroplast

Casein Micelle and Fat Globule in Milk

Insulin Action

CytoSkeleton

SARS-CoV-2 Fusion

Biosites: Cytoplasm

Escherichia coli Bacterium

HIV in Blood Plasma

Bacteriophage T4 Infection

Phage-based COVID-19 Vaccine

Influenza Virus

JCVI-syn3A Minimal Cell

Autophagy

Biosites: Nucleus

Red Blood Cell Cytoskeleton

Myelin

Coronavirus Life Cycle

RecA and DNA

Lipid Droplets

Excitatory and Inhibitory Synapses

Ebola Virus

Blood

Kinetochore

Vascular Endothelial Growth Factor (VegF) Signaling

Model of a Mycoplasma Cell

SARS-CoV-2 mRNA Vaccine

Transfer RNA and Gag Protein

Myoglobin in a Whale Muscle Cell

Collagen and Extracellular Matrix

Poliovirus Neutralization

Caulobacter Polar Microdomain

Biosites: Blood Plasma

Coronavirus

SARS-CoV-2 and Neutralizing Antibodies