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.

Hemoglobin S

Ribonuclease S

Lysozyme (512)

Collagen

B-DNA

Z-DNA

Hemoglobin (1000)

DPG-Hemoglobin Complex

Myoglobin Fold

Oxyhemoglobin

Tomato Bushy Stunt Virus (TBSV)

Aspartate Transcarbamoylase (ATCase)

Myohemerythrin

Trypsin

Myoglobin

A-DNA

Intermolecular Contacts in Hemoglobin S

Deoxyhemoglobin

Lysozyme (488)

Transfer Ribonucleic Acid (tRNA)

DNA

Carboxypeptidase A

Cytochrome c (unbound)

Cytochrome c

Hemoglobin

Lac Repressor

TATA-Binding Protein (TBP)

Immunoglobulin G (IgG)

Crambin

Induced Lac Repressor

Deoxyribonucleic Acid (DNA)

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

Vascular Endothelial Growth Factor (VegF) Signaling

Influenza Virus

CytoSkeleton

Poliovirus Neutralization

HIV Vaccine

Escherichia coli Bacterium

Biosites: Nucleus

Bacteriophage T4 Infection

Coronavirus Life Cycle

Caulobacter Polar Microdomain

Cellulose Synthase

HIV in Blood Plasma

Measles Virus Proteins

Influenza Vaccine

Biosites: Basement Membrane

Last Universal Common Ancestor

RecA and DNA

Ebola Virus

Coronavirus

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli

Collagen and Extracellular Matrix

Myelin

SARS-CoV-2 Fusion

HIV-Infected Cell

Phage-based COVID-19 Vaccine

Excitatory and Inhibitory Synapses

SARS-CoV-2 mRNA Vaccine

Biosites: Blood Plasma

Transfer RNA and Gag Protein

Myoglobin in a Whale Muscle Cell

Mycoplasma mycoides

Insulin Action

Red Blood Cell Cytoskeleton

Immunological Synapse

Casein Micelle and Fat Globule in Milk

Zika Virus

JCVI-syn3A Minimal Cell

Insulin Release

Abiogenesis

Chloroplast

Kinetochore

Blood

Respiratory Droplet

Biosites: Red Blood Cell

Autophagy

Model of a Mycoplasma Cell

Biosites: Muscle

Lipid Droplets

Biosites: Cytoplasm