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.

Deoxyribonucleic Acid (DNA)

DPG-Hemoglobin Complex

Crambin

Collagen

Cytochrome c (unbound)

Immunoglobulin G (IgG)

Hemoglobin

Oxyhemoglobin

Z-DNA

DNA

Myohemerythrin

Ribonuclease S

Cytochrome c

Transfer Ribonucleic Acid (tRNA)

Carboxypeptidase A

TATA-Binding Protein (TBP)

Hemoglobin S

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin (1000)

Lysozyme (512)

Myoglobin Fold

Deoxyhemoglobin

A-DNA

B-DNA

Induced Lac Repressor

Aspartate Transcarbamoylase (ATCase)

Lysozyme (488)

Lac Repressor

Trypsin

Myoglobin

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

Model of a Mycoplasma Cell

SARS-CoV-2 Fusion

Influenza Virus

CytoSkeleton

Mycoplasma mycoides

Caulobacter Polar Microdomain

Influenza Vaccine

Insulin Action

SARS-CoV-2 mRNA Vaccine

Autophagy

Biosites: Nucleus

HIV-Infected Cell

Poliovirus Neutralization

SARS-CoV-2 and Neutralizing Antibodies

Casein Micelle and Fat Globule in Milk

Myelin

Myoglobin in a Whale Muscle Cell

Biosites: Basement Membrane

Abiogenesis

Ebola Virus

Coronavirus Life Cycle

HIV Vaccine

Collagen and Extracellular Matrix

Zika Virus

Kinetochore

Escherichia coli

Excitatory and Inhibitory Synapses

Blood

Lipid Droplets

Cellulose Synthase

Biosites: Blood Plasma

Vascular Endothelial Growth Factor (VegF) Signaling

RecA and DNA

HIV in Blood Plasma

Bacteriophage T4 Infection

Insulin Release

Phage-based COVID-19 Vaccine

Measles Virus Proteins

Red Blood Cell Cytoskeleton

Transfer RNA and Gag Protein

Chloroplast

Respiratory Droplet

JCVI-syn3A Minimal Cell

Last Universal Common Ancestor

Immunological Synapse

Escherichia coli Bacterium

Coronavirus

Biosites: Cytoplasm

Biosites: Muscle

Biosites: Red Blood Cell