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.

TATA-Binding Protein (TBP)

Myoglobin Fold

Ribonuclease S

B-DNA

Myoglobin

Deoxyribonucleic Acid (DNA)

Deoxyhemoglobin

Myohemerythrin

Z-DNA

Induced Lac Repressor

Cytochrome c

Cytochrome c (unbound)

Hemoglobin S

Trypsin

Immunoglobulin G (IgG)

Intermolecular Contacts in Hemoglobin S

A-DNA

Aspartate Transcarbamoylase (ATCase)

Lysozyme (512)

Lac Repressor

Hemoglobin

Transfer Ribonucleic Acid (tRNA)

Hemoglobin (1000)

Oxyhemoglobin

Collagen

DNA

DPG-Hemoglobin Complex

Lysozyme (488)

Crambin

Carboxypeptidase A

Tomato Bushy Stunt Virus (TBSV)

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

HIV-Infected Cell

HIV in Blood Plasma

Biosites: Muscle

Last Universal Common Ancestor

Kinetochore

Blood

CytoSkeleton

Influenza Virus

Collagen and Extracellular Matrix

Zika Virus

Red Blood Cell Cytoskeleton

Poliovirus Neutralization

Biosites: Red Blood Cell

Escherichia coli Bacterium

HIV Vaccine

Casein Micelle and Fat Globule in Milk

Abiogenesis

JCVI-syn3A Minimal Cell

Respiratory Droplet

Influenza Vaccine

Bacteriophage T4 Infection

Phage-based COVID-19 Vaccine

Ebola Virus

Caulobacter Polar Microdomain

Biosites: Cytoplasm

Escherichia coli

Immunological Synapse

Autophagy

Measles Virus Proteins

Biosites: Nucleus

Myelin

Transfer RNA and Gag Protein

Biosites: Basement Membrane

Cellulose Synthase

Chloroplast

SARS-CoV-2 mRNA Vaccine

Model of a Mycoplasma Cell

Insulin Release

Insulin Action

Mycoplasma mycoides

Lipid Droplets

Excitatory and Inhibitory Synapses

Biosites: Blood Plasma

SARS-CoV-2 Fusion

RecA and DNA

Coronavirus Life Cycle

SARS-CoV-2 and Neutralizing Antibodies

Coronavirus

Myoglobin in a Whale Muscle Cell

Vascular Endothelial Growth Factor (VegF) Signaling