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.

Ribonuclease S

Hemoglobin

Lysozyme (488)

A-DNA

Crambin

Trypsin

Lac Repressor

Myoglobin Fold

Cytochrome c (unbound)

Z-DNA

TATA-Binding Protein (TBP)

Lysozyme (512)

Collagen

Deoxyhemoglobin

Deoxyribonucleic Acid (DNA)

Tomato Bushy Stunt Virus (TBSV)

Intermolecular Contacts in Hemoglobin S

Cytochrome c

B-DNA

Myohemerythrin

Induced Lac Repressor

DPG-Hemoglobin Complex

Oxyhemoglobin

Aspartate Transcarbamoylase (ATCase)

Hemoglobin S

Transfer Ribonucleic Acid (tRNA)

Hemoglobin (1000)

Immunoglobulin G (IgG)

DNA

Myoglobin

Carboxypeptidase A

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

Biosites: Nucleus

Vascular Endothelial Growth Factor (VegF) Signaling

Insulin Action

Excitatory and Inhibitory Synapses

Poliovirus Neutralization

Measles Virus Proteins

Phage-based COVID-19 Vaccine

Coronavirus

HIV Vaccine

HIV in Blood Plasma

Biosites: Red Blood Cell

Ebola Virus

Biosites: Basement Membrane

Escherichia coli

Zika Virus

HIV-Infected Cell

Chloroplast

Immunological Synapse

Transfer RNA and Gag Protein

Mycoplasma mycoides

SARS-CoV-2 mRNA Vaccine

Blood

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli Bacterium

CytoSkeleton

Caulobacter Polar Microdomain

Influenza Virus

Influenza Vaccine

Collagen and Extracellular Matrix

SARS-CoV-2 Fusion

Casein Micelle and Fat Globule in Milk

Biosites: Cytoplasm

Insulin Release

Myelin

Autophagy

Biosites: Blood Plasma

Coronavirus Life Cycle

RecA and DNA

Respiratory Droplet

Abiogenesis

Biosites: Muscle

JCVI-syn3A Minimal Cell

Model of a Mycoplasma Cell

Bacteriophage T4 Infection

Lipid Droplets

Cellulose Synthase

Myoglobin in a Whale Muscle Cell

Kinetochore

Last Universal Common Ancestor

Red Blood Cell Cytoskeleton