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.

Myohemerythrin

Oxyhemoglobin

Lac Repressor

DNA

Carboxypeptidase A

Hemoglobin (1000)

TATA-Binding Protein (TBP)

Collagen

Crambin

Deoxyhemoglobin

DPG-Hemoglobin Complex

Lysozyme (512)

Cytochrome c (unbound)

Ribonuclease S

Myoglobin Fold

Transfer Ribonucleic Acid (tRNA)

Deoxyribonucleic Acid (DNA)

Trypsin

Hemoglobin S

A-DNA

Hemoglobin

Lysozyme (488)

Z-DNA

Induced Lac Repressor

Intermolecular Contacts in Hemoglobin S

B-DNA

Aspartate Transcarbamoylase (ATCase)

Myoglobin

Tomato Bushy Stunt Virus (TBSV)

Immunoglobulin G (IgG)

Cytochrome c

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

Chloroplast

SARS-CoV-2 and Neutralizing Antibodies

Bacteriophage T4 Infection

Zika Virus

Last Universal Common Ancestor

Caulobacter Polar Microdomain

Blood

SARS-CoV-2 Fusion

Immunological Synapse

Biosites: Blood Plasma

Mycoplasma mycoides

Escherichia coli

SARS-CoV-2 mRNA Vaccine

Biosites: Muscle

Cellulose Synthase

Poliovirus Neutralization

Autophagy

Insulin Release

Escherichia coli Bacterium

Myelin

Influenza Virus

Measles Virus Proteins

Myoglobin in a Whale Muscle Cell

RecA and DNA

Coronavirus Life Cycle

Biosites: Nucleus

Model of a Mycoplasma Cell

HIV Vaccine

Lipid Droplets

HIV in Blood Plasma

Biosites: Red Blood Cell

Insulin Action

Ebola Virus

JCVI-syn3A Minimal Cell

CytoSkeleton

Red Blood Cell Cytoskeleton

Phage-based COVID-19 Vaccine

Excitatory and Inhibitory Synapses

Biosites: Basement Membrane

Influenza Vaccine

Casein Micelle and Fat Globule in Milk

Biosites: Cytoplasm

Transfer RNA and Gag Protein

Collagen and Extracellular Matrix

Vascular Endothelial Growth Factor (VegF) Signaling

Kinetochore

Abiogenesis

Respiratory Droplet

HIV-Infected Cell

Coronavirus