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.

Lysozyme (512)

Transfer Ribonucleic Acid (tRNA)

Cytochrome c

Tomato Bushy Stunt Virus (TBSV)

B-DNA

Crambin

Deoxyribonucleic Acid (DNA)

Lac Repressor

Induced Lac Repressor

Hemoglobin (1000)

DNA

Z-DNA

A-DNA

Lysozyme (488)

Oxyhemoglobin

Immunoglobulin G (IgG)

Ribonuclease S

Hemoglobin S

Myoglobin

Collagen

Cytochrome c (unbound)

Deoxyhemoglobin

Intermolecular Contacts in Hemoglobin S

TATA-Binding Protein (TBP)

DPG-Hemoglobin Complex

Myohemerythrin

Myoglobin Fold

Hemoglobin

Trypsin

Carboxypeptidase A

Aspartate Transcarbamoylase (ATCase)

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

CytoSkeleton

Coronavirus

Biosites: Red Blood Cell

Biosites: Muscle

Phage-based COVID-19 Vaccine

Abiogenesis

JCVI-syn3A Minimal Cell

Respiratory Droplet

SARS-CoV-2 and Neutralizing Antibodies

Model of a Mycoplasma Cell

HIV in Blood Plasma

Myoglobin in a Whale Muscle Cell

Kinetochore

Insulin Release

Lipid Droplets

Casein Micelle and Fat Globule in Milk

SARS-CoV-2 mRNA Vaccine

Chloroplast

Measles Virus Proteins

HIV Vaccine

Coronavirus Life Cycle

Poliovirus Neutralization

Escherichia coli Bacterium

Caulobacter Polar Microdomain

Excitatory and Inhibitory Synapses

Last Universal Common Ancestor

Mycoplasma mycoides

Red Blood Cell Cytoskeleton

Biosites: Basement Membrane

Zika Virus

Collagen and Extracellular Matrix

Biosites: Blood Plasma

Autophagy

HIV-Infected Cell

Blood

Myelin

Vascular Endothelial Growth Factor (VegF) Signaling

RecA and DNA

Insulin Action

Biosites: Nucleus

Ebola Virus

Escherichia coli

Biosites: Cytoplasm

Influenza Vaccine

Bacteriophage T4 Infection

Transfer RNA and Gag Protein

Influenza Virus

SARS-CoV-2 Fusion

Cellulose Synthase

Immunological Synapse