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.

Z-DNA

Oxyhemoglobin

Lysozyme (488)

B-DNA

Myoglobin Fold

Hemoglobin

Cytochrome c (unbound)

Transfer Ribonucleic Acid (tRNA)

Induced Lac Repressor

Myohemerythrin

Deoxyribonucleic Acid (DNA)

DNA

A-DNA

Crambin

Myoglobin

Aspartate Transcarbamoylase (ATCase)

TATA-Binding Protein (TBP)

DPG-Hemoglobin Complex

Collagen

Trypsin

Cytochrome c

Intermolecular Contacts in Hemoglobin S

Deoxyhemoglobin

Hemoglobin (1000)

Lysozyme (512)

Lac Repressor

Carboxypeptidase A

Ribonuclease S

Tomato Bushy Stunt Virus (TBSV)

Immunoglobulin G (IgG)

Hemoglobin S

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 mRNA Vaccine

Biosites: Basement Membrane

Transfer RNA and Gag Protein

Cellulose Synthase

Biosites: Cytoplasm

HIV-Infected Cell

Escherichia coli

Kinetochore

Chloroplast

Last Universal Common Ancestor

Ebola Virus

Biosites: Red Blood Cell

RecA and DNA

Escherichia coli Bacterium

Coronavirus

CytoSkeleton

JCVI-syn3A Minimal Cell

HIV in Blood Plasma

Abiogenesis

Bacteriophage T4 Infection

Lipid Droplets

Casein Micelle and Fat Globule in Milk

Insulin Action

Immunological Synapse

SARS-CoV-2 and Neutralizing Antibodies

Red Blood Cell Cytoskeleton

Influenza Virus

Insulin Release

Myoglobin in a Whale Muscle Cell

Blood

Collagen and Extracellular Matrix

Measles Virus Proteins

Influenza Vaccine

Poliovirus Neutralization

Respiratory Droplet

Biosites: Muscle

Mycoplasma mycoides

Caulobacter Polar Microdomain

Myelin

Model of a Mycoplasma Cell

Zika Virus

Coronavirus Life Cycle

Autophagy

Biosites: Nucleus

Excitatory and Inhibitory Synapses

Phage-based COVID-19 Vaccine

Vascular Endothelial Growth Factor (VegF) Signaling

HIV Vaccine

SARS-CoV-2 Fusion

Biosites: Blood Plasma