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.

Cytochrome c

Lysozyme (488)

Carboxypeptidase A

Aspartate Transcarbamoylase (ATCase)

Intermolecular Contacts in Hemoglobin S

Deoxyribonucleic Acid (DNA)

B-DNA

Myoglobin Fold

Induced Lac Repressor

Myoglobin

Oxyhemoglobin

Collagen

Ribonuclease S

TATA-Binding Protein (TBP)

Myohemerythrin

Trypsin

Lysozyme (512)

DPG-Hemoglobin Complex

Cytochrome c (unbound)

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

Hemoglobin

Immunoglobulin G (IgG)

Crambin

Hemoglobin (1000)

Deoxyhemoglobin

DNA

Z-DNA

Transfer Ribonucleic Acid (tRNA)

A-DNA

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

Excitatory and Inhibitory Synapses

Immunological Synapse

HIV Vaccine

JCVI-syn3A Minimal Cell

SARS-CoV-2 Fusion

Biosites: Basement Membrane

Kinetochore

Caulobacter Polar Microdomain

Escherichia coli Bacterium

Coronavirus Life Cycle

Lipid Droplets

Escherichia coli

Blood

Cellulose Synthase

Phage-based COVID-19 Vaccine

Biosites: Cytoplasm

Myelin

Poliovirus Neutralization

Respiratory Droplet

Biosites: Nucleus

Transfer RNA and Gag Protein

Vascular Endothelial Growth Factor (VegF) Signaling

Red Blood Cell Cytoskeleton

SARS-CoV-2 mRNA Vaccine

HIV-Infected Cell

Mycoplasma mycoides

Insulin Action

Myoglobin in a Whale Muscle Cell

Measles Virus Proteins

Influenza Vaccine

Biosites: Red Blood Cell

Last Universal Common Ancestor

Chloroplast

RecA and DNA

Casein Micelle and Fat Globule in Milk

Bacteriophage T4 Infection

Abiogenesis

Ebola Virus

Collagen and Extracellular Matrix

CytoSkeleton

Influenza Virus

Coronavirus

Autophagy

Biosites: Muscle

SARS-CoV-2 and Neutralizing Antibodies

Insulin Release

Biosites: Blood Plasma

Zika Virus

HIV in Blood Plasma

Model of a Mycoplasma Cell