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.

TATA-Binding Protein (TBP)

Cytochrome c

Intermolecular Contacts in Hemoglobin S

Immunoglobulin G (IgG)

Collagen

Hemoglobin (1000)

Hemoglobin S

Tomato Bushy Stunt Virus (TBSV)

DNA

Lac Repressor

B-DNA

Deoxyhemoglobin

A-DNA

DPG-Hemoglobin Complex

Ribonuclease S

Carboxypeptidase A

Crambin

Myoglobin Fold

Deoxyribonucleic Acid (DNA)

Z-DNA

Myohemerythrin

Cytochrome c (unbound)

Aspartate Transcarbamoylase (ATCase)

Oxyhemoglobin

Hemoglobin

Myoglobin

Lysozyme (488)

Induced Lac Repressor

Transfer Ribonucleic Acid (tRNA)

Lysozyme (512)

Trypsin

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

Measles Virus Proteins

Model of a Mycoplasma Cell

Biosites: Red Blood Cell

Coronavirus Life Cycle

Blood

SARS-CoV-2 Fusion

HIV in Blood Plasma

JCVI-syn3A Minimal Cell

Red Blood Cell Cytoskeleton

Respiratory Droplet

Bacteriophage T4 Infection

CytoSkeleton

RecA and DNA

Biosites: Nucleus

Myelin

Poliovirus Neutralization

SARS-CoV-2 and Neutralizing Antibodies

Ebola Virus

HIV Vaccine

Abiogenesis

Casein Micelle and Fat Globule in Milk

Autophagy

Escherichia coli Bacterium

Myoglobin in a Whale Muscle Cell

Excitatory and Inhibitory Synapses

Caulobacter Polar Microdomain

Biosites: Muscle

Influenza Vaccine

Transfer RNA and Gag Protein

Lipid Droplets

Mycoplasma mycoides

Insulin Release

Influenza Virus

Phage-based COVID-19 Vaccine

Chloroplast

Biosites: Blood Plasma

Collagen and Extracellular Matrix

Biosites: Basement Membrane

Immunological Synapse

SARS-CoV-2 mRNA Vaccine

Cellulose Synthase

Last Universal Common Ancestor

Zika Virus

Insulin Action

HIV-Infected Cell

Biosites: Cytoplasm

Kinetochore

Escherichia coli

Coronavirus

Vascular Endothelial Growth Factor (VegF) Signaling