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.

Intermolecular Contacts in Hemoglobin S

Deoxyribonucleic Acid (DNA)

Collagen

DPG-Hemoglobin Complex

Transfer Ribonucleic Acid (tRNA)

Myoglobin Fold

DNA

Immunoglobulin G (IgG)

Oxyhemoglobin

Trypsin

Hemoglobin (1000)

Lysozyme (488)

Crambin

Tomato Bushy Stunt Virus (TBSV)

Induced Lac Repressor

TATA-Binding Protein (TBP)

Ribonuclease S

Cytochrome c (unbound)

Z-DNA

Aspartate Transcarbamoylase (ATCase)

Myoglobin

Hemoglobin S

Lysozyme (512)

Cytochrome c

Carboxypeptidase A

Lac Repressor

Myohemerythrin

B-DNA

A-DNA

Hemoglobin

Deoxyhemoglobin

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

Escherichia coli

Biosites: Basement Membrane

Zika Virus

CytoSkeleton

Model of a Mycoplasma Cell

Red Blood Cell Cytoskeleton

Myelin

Autophagy

Coronavirus

HIV Vaccine

Mycoplasma mycoides

Biosites: Cytoplasm

Coronavirus Life Cycle

Excitatory and Inhibitory Synapses

Biosites: Muscle

Blood

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Red Blood Cell

Biosites: Nucleus

JCVI-syn3A Minimal Cell

HIV in Blood Plasma

Myoglobin in a Whale Muscle Cell

Chloroplast

Respiratory Droplet

Poliovirus Neutralization

Measles Virus Proteins

Influenza Vaccine

Casein Micelle and Fat Globule in Milk

SARS-CoV-2 mRNA Vaccine

Abiogenesis

Lipid Droplets

HIV-Infected Cell

Transfer RNA and Gag Protein

Phage-based COVID-19 Vaccine

Bacteriophage T4 Infection

Kinetochore

Ebola Virus

Escherichia coli Bacterium

Influenza Virus

Cellulose Synthase

Caulobacter Polar Microdomain

Last Universal Common Ancestor

SARS-CoV-2 Fusion

Insulin Release

Vascular Endothelial Growth Factor (VegF) Signaling

RecA and DNA

Immunological Synapse

Collagen and Extracellular Matrix

Insulin Action

Biosites: Blood Plasma