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.

Induced Lac Repressor

Z-DNA

Deoxyribonucleic Acid (DNA)

Lysozyme (488)

Oxyhemoglobin

Aspartate Transcarbamoylase (ATCase)

Tomato Bushy Stunt Virus (TBSV)

Crambin

Collagen

Hemoglobin S

Trypsin

Myoglobin Fold

Carboxypeptidase A

TATA-Binding Protein (TBP)

Lac Repressor

Hemoglobin (1000)

Immunoglobulin G (IgG)

DNA

Deoxyhemoglobin

B-DNA

Transfer Ribonucleic Acid (tRNA)

DPG-Hemoglobin Complex

Hemoglobin

Intermolecular Contacts in Hemoglobin S

Cytochrome c (unbound)

Ribonuclease S

A-DNA

Lysozyme (512)

Myoglobin

Myohemerythrin

Cytochrome c

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

Chloroplast

Escherichia coli

Blood

Poliovirus Neutralization

Insulin Release

Biosites: Red Blood Cell

Lipid Droplets

Influenza Vaccine

Coronavirus

Myelin

Casein Micelle and Fat Globule in Milk

HIV in Blood Plasma

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Blood Plasma

Kinetochore

CytoSkeleton

Immunological Synapse

SARS-CoV-2 and Neutralizing Antibodies

Myoglobin in a Whale Muscle Cell

Transfer RNA and Gag Protein

Insulin Action

SARS-CoV-2 mRNA Vaccine

Coronavirus Life Cycle

Zika Virus

Caulobacter Polar Microdomain

Biosites: Muscle

Cellulose Synthase

Influenza Virus

Last Universal Common Ancestor

Bacteriophage T4 Infection

Autophagy

Red Blood Cell Cytoskeleton

Phage-based COVID-19 Vaccine

Escherichia coli Bacterium

Ebola Virus

Measles Virus Proteins

Biosites: Basement Membrane

Excitatory and Inhibitory Synapses

Respiratory Droplet

Biosites: Nucleus

Model of a Mycoplasma Cell

RecA and DNA

Abiogenesis

Mycoplasma mycoides

SARS-CoV-2 Fusion

Biosites: Cytoplasm

Collagen and Extracellular Matrix

JCVI-syn3A Minimal Cell

HIV-Infected Cell

HIV Vaccine