Molecule of the Month
September 2026

Biofilms

Bacterial communities glued together and protected by biological polymers

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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 S

Induced Lac Repressor

Lysozyme (488)

B-DNA

Cytochrome c

Myoglobin

Cytochrome c (unbound)

Ribonuclease S

Oxyhemoglobin

Deoxyhemoglobin

DPG-Hemoglobin Complex

Z-DNA

Lysozyme (512)

Carboxypeptidase A

Trypsin

Aspartate Transcarbamoylase (ATCase)

Transfer Ribonucleic Acid (tRNA)

Deoxyribonucleic Acid (DNA)

Myoglobin Fold

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

Collagen

TATA-Binding Protein (TBP)

Crambin

A-DNA

Hemoglobin (1000)

Immunoglobulin G (IgG)

Hemoglobin

DNA

Myohemerythrin

Intermolecular Contacts in 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

Influenza Vaccine

Bacteriophage T4 Infection

Biosites: Muscle

Escherichia coli

Chloroplast

Influenza Virus

Vascular Endothelial Growth Factor (VegF) Signaling

Kinetochore

RecA and DNA

HIV in Blood Plasma

Zika Virus

Biosites: Basement Membrane

Abiogenesis

Casein Micelle and Fat Globule in Milk

SARS-CoV-2 mRNA Vaccine

Mycoplasma mycoides

Escherichia coli Bacterium

Coronavirus

Last Universal Common Ancestor

Transfer RNA and Gag Protein

Caulobacter Polar Microdomain

Cellulose Synthase

Lipid Droplets

Poliovirus Neutralization

Measles Virus Proteins

Model of a Mycoplasma Cell

SARS-CoV-2 Fusion

Excitatory and Inhibitory Synapses

Biosites: Cytoplasm

Coronavirus Life Cycle

Ebola Virus

HIV-Infected Cell

Red Blood Cell Cytoskeleton

Collagen and Extracellular Matrix

Autophagy

Biosites: Nucleus

Biosites: Red Blood Cell

Blood

Insulin Action

Myelin

JCVI-syn3A Minimal Cell

Biosites: Blood Plasma

Myoglobin in a Whale Muscle Cell

CytoSkeleton

SARS-CoV-2 and Neutralizing Antibodies

Immunological Synapse

Insulin Release

Respiratory Droplet

Phage-based COVID-19 Vaccine

HIV Vaccine