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.

Collagen

Aspartate Transcarbamoylase (ATCase)

B-DNA

Lysozyme (512)

Oxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Z-DNA

Hemoglobin S

Induced Lac Repressor

Cytochrome c (unbound)

Ribonuclease S

TATA-Binding Protein (TBP)

DNA

DPG-Hemoglobin Complex

Myoglobin

Hemoglobin (1000)

Crambin

Cytochrome c

Deoxyhemoglobin

Hemoglobin

Immunoglobulin G (IgG)

Carboxypeptidase A

A-DNA

Lysozyme (488)

Lac Repressor

Myoglobin Fold

Tomato Bushy Stunt Virus (TBSV)

Transfer Ribonucleic Acid (tRNA)

Myohemerythrin

Trypsin

Deoxyribonucleic Acid (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

Red Blood Cell Cytoskeleton

HIV-Infected Cell

Influenza Virus

Autophagy

Escherichia coli Bacterium

Biosites: Nucleus

Insulin Action

CytoSkeleton

Biosites: Basement Membrane

Biosites: Red Blood Cell

Measles Virus Proteins

Biosites: Muscle

Transfer RNA and Gag Protein

Escherichia coli

Biosites: Blood Plasma

Bacteriophage T4 Infection

Mycoplasma mycoides

Last Universal Common Ancestor

HIV in Blood Plasma

Caulobacter Polar Microdomain

Lipid Droplets

Cellulose Synthase

RecA and DNA

Vascular Endothelial Growth Factor (VegF) Signaling

Phage-based COVID-19 Vaccine

Collagen and Extracellular Matrix

HIV Vaccine

Insulin Release

Poliovirus Neutralization

SARS-CoV-2 mRNA Vaccine

JCVI-syn3A Minimal Cell

Coronavirus

Chloroplast

Excitatory and Inhibitory Synapses

Respiratory Droplet

Biosites: Cytoplasm

Myelin

SARS-CoV-2 and Neutralizing Antibodies

Immunological Synapse

Abiogenesis

Casein Micelle and Fat Globule in Milk

Myoglobin in a Whale Muscle Cell

SARS-CoV-2 Fusion

Coronavirus Life Cycle

Influenza Vaccine

Ebola Virus

Model of a Mycoplasma Cell

Zika Virus

Kinetochore

Blood