Molecule of the Month
October 2026

Celebrating 55 Years of the PDB

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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.

Hemoglobin (1000)

Tomato Bushy Stunt Virus (TBSV)

Lysozyme (512)

TATA-Binding Protein (TBP)

Cytochrome c

DNA

B-DNA

Induced Lac Repressor

Cytochrome c (unbound)

A-DNA

Transfer Ribonucleic Acid (tRNA)

Hemoglobin S

Immunoglobulin G (IgG)

Oxyhemoglobin

Carboxypeptidase A

Collagen

Aspartate Transcarbamoylase (ATCase)

Deoxyhemoglobin

Deoxyribonucleic Acid (DNA)

Z-DNA

Lac Repressor

Ribonuclease S

Lysozyme (488)

Myohemerythrin

Crambin

DPG-Hemoglobin Complex

Hemoglobin

Myoglobin

Trypsin

Intermolecular Contacts in Hemoglobin S

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

Autophagy

Vascular Endothelial Growth Factor (VegF) Signaling

Kinetochore

Caulobacter Polar Microdomain

Abiogenesis

Lipid Droplets

HIV-Infected Cell

Insulin Release

Poliovirus Neutralization

Ebola Virus

RecA and DNA

Immunological Synapse

Biosites: Nucleus

CytoSkeleton

Respiratory Droplet

Influenza Virus

Zika Virus

Phage-based COVID-19 Vaccine

SARS-CoV-2 Fusion

Escherichia coli

Last Universal Common Ancestor

Chloroplast

HIV in Blood Plasma

Biosites: Red Blood Cell

Biosites: Muscle

Measles Virus Proteins

Model of a Mycoplasma Cell

Biosites: Cytoplasm

Transfer RNA and Gag Protein

Excitatory and Inhibitory Synapses

SARS-CoV-2 and Neutralizing Antibodies

Insulin Action

Coronavirus Life Cycle

Biosites: Blood Plasma

Cellulose Synthase

Coronavirus

Myoglobin in a Whale Muscle Cell

Influenza Vaccine

Blood

Red Blood Cell Cytoskeleton

HIV Vaccine

Escherichia coli Bacterium

Mycoplasma mycoides

SARS-CoV-2 mRNA Vaccine

Collagen and Extracellular Matrix

Biosites: Basement Membrane

Bacteriophage T4 Infection

JCVI-syn3A Minimal Cell

Casein Micelle and Fat Globule in Milk

Myelin