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.

Carboxypeptidase A

Immunoglobulin G (IgG)

Induced Lac Repressor

Ribonuclease S

Oxyhemoglobin

Hemoglobin

Lac Repressor

Lysozyme (488)

Deoxyhemoglobin

Cytochrome c (unbound)

Crambin

DPG-Hemoglobin Complex

A-DNA

Z-DNA

Deoxyribonucleic Acid (DNA)

Intermolecular Contacts in Hemoglobin S

Trypsin

Hemoglobin S

Myohemerythrin

Transfer Ribonucleic Acid (tRNA)

Tomato Bushy Stunt Virus (TBSV)

Collagen

Myoglobin Fold

Cytochrome c

TATA-Binding Protein (TBP)

Aspartate Transcarbamoylase (ATCase)

Hemoglobin (1000)

B-DNA

Lysozyme (512)

DNA

Myoglobin

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

Red Blood Cell Cytoskeleton

Insulin Release

SARS-CoV-2 Fusion

Zika Virus

Kinetochore

CytoSkeleton

Ebola Virus

Cellulose Synthase

Caulobacter Polar Microdomain

Lipid Droplets

Insulin Action

Abiogenesis

Mycoplasma mycoides

Vascular Endothelial Growth Factor (VegF) Signaling

Transfer RNA and Gag Protein

SARS-CoV-2 mRNA Vaccine

Immunological Synapse

Chloroplast

Collagen and Extracellular Matrix

Coronavirus

Coronavirus Life Cycle

Biosites: Red Blood Cell

Biosites: Cytoplasm

Casein Micelle and Fat Globule in Milk

Escherichia coli Bacterium

Biosites: Blood Plasma

Blood

Autophagy

JCVI-syn3A Minimal Cell

Influenza Vaccine

Escherichia coli

Myoglobin in a Whale Muscle Cell

Last Universal Common Ancestor

Excitatory and Inhibitory Synapses

Poliovirus Neutralization

Measles Virus Proteins

HIV Vaccine

HIV in Blood Plasma

HIV-Infected Cell

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Nucleus

Biosites: Basement Membrane

Bacteriophage T4 Infection

Myelin

Biosites: Muscle

Respiratory Droplet

Phage-based COVID-19 Vaccine

RecA and DNA

Model of a Mycoplasma Cell

Influenza Virus