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.

Aspartate Transcarbamoylase (ATCase)

Tomato Bushy Stunt Virus (TBSV)

A-DNA

Collagen

Ribonuclease S

Myoglobin

Trypsin

Oxyhemoglobin

Lysozyme (488)

Myohemerythrin

Transfer Ribonucleic Acid (tRNA)

Hemoglobin

Hemoglobin S

Z-DNA

Deoxyribonucleic Acid (DNA)

Immunoglobulin G (IgG)

Intermolecular Contacts in Hemoglobin S

DNA

Induced Lac Repressor

Cytochrome c

TATA-Binding Protein (TBP)

B-DNA

Myoglobin Fold

Carboxypeptidase A

Lac Repressor

Cytochrome c (unbound)

Lysozyme (512)

Deoxyhemoglobin

DPG-Hemoglobin Complex

Crambin

Hemoglobin (1000)

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

Escherichia coli

Caulobacter Polar Microdomain

Coronavirus Life Cycle

Influenza Vaccine

Cellulose Synthase

Phage-based COVID-19 Vaccine

Respiratory Droplet

Last Universal Common Ancestor

Poliovirus Neutralization

Biosites: Cytoplasm

Model of a Mycoplasma Cell

Zika Virus

Myelin

HIV-Infected Cell

Kinetochore

JCVI-syn3A Minimal Cell

Mycoplasma mycoides

Biosites: Basement Membrane

Abiogenesis

HIV in Blood Plasma

Escherichia coli Bacterium

Biosites: Muscle

Collagen and Extracellular Matrix

Coronavirus

SARS-CoV-2 Fusion

Biosites: Blood Plasma

Red Blood Cell Cytoskeleton

Insulin Action

SARS-CoV-2 and Neutralizing Antibodies

CytoSkeleton

Measles Virus Proteins

Biosites: Nucleus

Vascular Endothelial Growth Factor (VegF) Signaling

Myoglobin in a Whale Muscle Cell

Chloroplast

Influenza Virus

Biosites: Red Blood Cell

Casein Micelle and Fat Globule in Milk

HIV Vaccine

Blood

Ebola Virus

Autophagy

Excitatory and Inhibitory Synapses

SARS-CoV-2 mRNA Vaccine

Bacteriophage T4 Infection

Insulin Release

RecA and DNA

Lipid Droplets

Immunological Synapse

Transfer RNA and Gag Protein