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.

Aspartate Transcarbamoylase (ATCase)

Tomato Bushy Stunt Virus (TBSV)

Induced Lac Repressor

Cytochrome c

Collagen

Ribonuclease S

Deoxyribonucleic Acid (DNA)

Oxyhemoglobin

Lysozyme (512)

Intermolecular Contacts in Hemoglobin S

Carboxypeptidase A

Myoglobin Fold

Trypsin

B-DNA

Hemoglobin (1000)

Lac Repressor

Myohemerythrin

Cytochrome c (unbound)

Lysozyme (488)

Crambin

Deoxyhemoglobin

Immunoglobulin G (IgG)

TATA-Binding Protein (TBP)

Transfer Ribonucleic Acid (tRNA)

Hemoglobin S

Z-DNA

Hemoglobin

DNA

Myoglobin

A-DNA

DPG-Hemoglobin Complex

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

Insulin Release

Respiratory Droplet

Mycoplasma mycoides

Chloroplast

Vascular Endothelial Growth Factor (VegF) Signaling

Measles Virus Proteins

JCVI-syn3A Minimal Cell

Caulobacter Polar Microdomain

Bacteriophage T4 Infection

Last Universal Common Ancestor

Transfer RNA and Gag Protein

HIV in Blood Plasma

HIV-Infected Cell

Insulin Action

Casein Micelle and Fat Globule in Milk

Immunological Synapse

Biosites: Basement Membrane

Biosites: Muscle

Biosites: Blood Plasma

Influenza Vaccine

SARS-CoV-2 and Neutralizing Antibodies

Poliovirus Neutralization

Coronavirus

Zika Virus

Abiogenesis

Myoglobin in a Whale Muscle Cell

Escherichia coli Bacterium

Autophagy

Blood

Cellulose Synthase

SARS-CoV-2 mRNA Vaccine

Red Blood Cell Cytoskeleton

Model of a Mycoplasma Cell

Lipid Droplets

Collagen and Extracellular Matrix

Phage-based COVID-19 Vaccine

Myelin

Biosites: Cytoplasm

CytoSkeleton

RecA and DNA

SARS-CoV-2 Fusion

Kinetochore

Ebola Virus

Biosites: Nucleus

HIV Vaccine

Influenza Virus

Excitatory and Inhibitory Synapses

Escherichia coli

Coronavirus Life Cycle

Biosites: Red Blood Cell