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.

Lac Repressor

Ribonuclease S

A-DNA

Oxyhemoglobin

Tomato Bushy Stunt Virus (TBSV)

Lysozyme (512)

Aspartate Transcarbamoylase (ATCase)

Collagen

Z-DNA

DPG-Hemoglobin Complex

TATA-Binding Protein (TBP)

Myoglobin Fold

Deoxyribonucleic Acid (DNA)

Intermolecular Contacts in Hemoglobin S

Transfer Ribonucleic Acid (tRNA)

Hemoglobin S

Deoxyhemoglobin

Trypsin

Induced Lac Repressor

Myohemerythrin

Lysozyme (488)

Carboxypeptidase A

Cytochrome c

Hemoglobin (1000)

Hemoglobin

Cytochrome c (unbound)

Immunoglobulin G (IgG)

Myoglobin

Crambin

B-DNA

DNA

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

Model of a Mycoplasma Cell

HIV Vaccine

RecA and DNA

HIV in Blood Plasma

Influenza Virus

CytoSkeleton

Biosites: Red Blood Cell

Blood

Cellulose Synthase

Kinetochore

Last Universal Common Ancestor

Casein Micelle and Fat Globule in Milk

Influenza Vaccine

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Cytoplasm

Escherichia coli Bacterium

HIV-Infected Cell

Coronavirus Life Cycle

Biosites: Muscle

Autophagy

Insulin Release

Abiogenesis

Insulin Action

SARS-CoV-2 mRNA Vaccine

Collagen and Extracellular Matrix

Lipid Droplets

Myoglobin in a Whale Muscle Cell

Escherichia coli

Biosites: Blood Plasma

Excitatory and Inhibitory Synapses

Zika Virus

Coronavirus

Bacteriophage T4 Infection

Mycoplasma mycoides

Measles Virus Proteins

SARS-CoV-2 Fusion

Immunological Synapse

Caulobacter Polar Microdomain

Phage-based COVID-19 Vaccine

Myelin

Respiratory Droplet

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Basement Membrane

Biosites: Nucleus

Transfer RNA and Gag Protein

Red Blood Cell Cytoskeleton

Ebola Virus

Chloroplast

JCVI-syn3A Minimal Cell

Poliovirus Neutralization