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 (unbound)

Collagen

Immunoglobulin G (IgG)

Trypsin

Deoxyhemoglobin

Cytochrome c

B-DNA

Hemoglobin

Myoglobin Fold

A-DNA

Aspartate Transcarbamoylase (ATCase)

Carboxypeptidase A

DPG-Hemoglobin Complex

Myohemerythrin

DNA

Intermolecular Contacts in Hemoglobin S

Induced Lac Repressor

Crambin

Transfer Ribonucleic Acid (tRNA)

Lac Repressor

Hemoglobin (1000)

TATA-Binding Protein (TBP)

Lysozyme (488)

Myoglobin

Ribonuclease S

Lysozyme (512)

Tomato Bushy Stunt Virus (TBSV)

Deoxyribonucleic Acid (DNA)

Z-DNA

Hemoglobin S

Oxyhemoglobin

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

SARS-CoV-2 mRNA Vaccine

Influenza Vaccine

Casein Micelle and Fat Globule in Milk

Lipid Droplets

Kinetochore

Bacteriophage T4 Infection

Poliovirus Neutralization

Biosites: Nucleus

Excitatory and Inhibitory Synapses

Caulobacter Polar Microdomain

Escherichia coli Bacterium

Chloroplast

Insulin Release

SARS-CoV-2 Fusion

Red Blood Cell Cytoskeleton

Biosites: Basement Membrane

Biosites: Blood Plasma

Blood

Vascular Endothelial Growth Factor (VegF) Signaling

Escherichia coli

Biosites: Muscle

Mycoplasma mycoides

Coronavirus Life Cycle

Phage-based COVID-19 Vaccine

Cellulose Synthase

Model of a Mycoplasma Cell

Abiogenesis

HIV Vaccine

Ebola Virus

SARS-CoV-2 and Neutralizing Antibodies

CytoSkeleton

Insulin Action

Zika Virus

Autophagy

Myelin

Biosites: Red Blood Cell

JCVI-syn3A Minimal Cell

Measles Virus Proteins

HIV in Blood Plasma

Transfer RNA and Gag Protein

Immunological Synapse

HIV-Infected Cell

Influenza Virus

Biosites: Cytoplasm

Last Universal Common Ancestor

Coronavirus

Myoglobin in a Whale Muscle Cell

RecA and DNA

Collagen and Extracellular Matrix

Respiratory Droplet