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.

Tomato Bushy Stunt Virus (TBSV)

Immunoglobulin G (IgG)

Hemoglobin S

Myoglobin

Myohemerythrin

Myoglobin Fold

A-DNA

Cytochrome c (unbound)

Collagen

Lysozyme (488)

Carboxypeptidase A

Z-DNA

DPG-Hemoglobin Complex

Hemoglobin

TATA-Binding Protein (TBP)

B-DNA

Oxyhemoglobin

Induced Lac Repressor

Trypsin

Crambin

Deoxyribonucleic Acid (DNA)

Deoxyhemoglobin

Cytochrome c

Hemoglobin (1000)

Intermolecular Contacts in Hemoglobin S

Ribonuclease S

Transfer Ribonucleic Acid (tRNA)

Aspartate Transcarbamoylase (ATCase)

Lysozyme (512)

DNA

Lac Repressor

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

Vascular Endothelial Growth Factor (VegF) Signaling

Coronavirus Life Cycle

Immunological Synapse

Biosites: Blood Plasma

Biosites: Cytoplasm

Abiogenesis

RecA and DNA

Blood

Zika Virus

Influenza Vaccine

Biosites: Basement Membrane

Lipid Droplets

Casein Micelle and Fat Globule in Milk

HIV-Infected Cell

Ebola Virus

Respiratory Droplet

Biosites: Red Blood Cell

Phage-based COVID-19 Vaccine

Transfer RNA and Gag Protein

Escherichia coli Bacterium

SARS-CoV-2 mRNA Vaccine

Excitatory and Inhibitory Synapses

Mycoplasma mycoides

Insulin Release

HIV in Blood Plasma

Escherichia coli

Kinetochore

Coronavirus

Insulin Action

HIV Vaccine

Autophagy

Last Universal Common Ancestor

Cellulose Synthase

Measles Virus Proteins

Collagen and Extracellular Matrix

SARS-CoV-2 Fusion

Poliovirus Neutralization

Myoglobin in a Whale Muscle Cell

Model of a Mycoplasma Cell

Influenza Virus

Biosites: Nucleus

Bacteriophage T4 Infection

SARS-CoV-2 and Neutralizing Antibodies

Red Blood Cell Cytoskeleton

Biosites: Muscle

Caulobacter Polar Microdomain

Myelin

Chloroplast

CytoSkeleton

JCVI-syn3A Minimal Cell