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.

Myohemerythrin

Aspartate Transcarbamoylase (ATCase)

Immunoglobulin G (IgG)

Trypsin

Z-DNA

B-DNA

Hemoglobin S

Cytochrome c (unbound)

Collagen

Transfer Ribonucleic Acid (tRNA)

Myoglobin

Intermolecular Contacts in Hemoglobin S

Deoxyhemoglobin

Crambin

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

A-DNA

Hemoglobin

Lysozyme (488)

Cytochrome c

Deoxyribonucleic Acid (DNA)

Myoglobin Fold

Oxyhemoglobin

DPG-Hemoglobin Complex

Hemoglobin (1000)

Lysozyme (512)

Ribonuclease S

Carboxypeptidase A

DNA

Induced Lac Repressor

TATA-Binding Protein (TBP)

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

Phage-based COVID-19 Vaccine

Red Blood Cell Cytoskeleton

Poliovirus Neutralization

Cellulose Synthase

HIV in Blood Plasma

Last Universal Common Ancestor

Biosites: Cytoplasm

Collagen and Extracellular Matrix

Autophagy

Zika Virus

Casein Micelle and Fat Globule in Milk

Biosites: Muscle

Biosites: Red Blood Cell

Chloroplast

Coronavirus

Bacteriophage T4 Infection

HIV-Infected Cell

HIV Vaccine

Coronavirus Life Cycle

SARS-CoV-2 Fusion

Myoglobin in a Whale Muscle Cell

SARS-CoV-2 mRNA Vaccine

Mycoplasma mycoides

Influenza Vaccine

Transfer RNA and Gag Protein

Lipid Droplets

Biosites: Basement Membrane

Measles Virus Proteins

Biosites: Blood Plasma

Model of a Mycoplasma Cell

Myelin

Vascular Endothelial Growth Factor (VegF) Signaling

Escherichia coli Bacterium

Insulin Action

SARS-CoV-2 and Neutralizing Antibodies

Influenza Virus

Escherichia coli

Insulin Release

Blood

Biosites: Nucleus

RecA and DNA

Ebola Virus

Abiogenesis

Excitatory and Inhibitory Synapses

Kinetochore

Caulobacter Polar Microdomain

Respiratory Droplet

Immunological Synapse

JCVI-syn3A Minimal Cell

CytoSkeleton