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.

Myoglobin Fold

Lysozyme (512)

Intermolecular Contacts in Hemoglobin S

Z-DNA

Cytochrome c (unbound)

TATA-Binding Protein (TBP)

A-DNA

Deoxyhemoglobin

Induced Lac Repressor

Myohemerythrin

DNA

Hemoglobin S

Ribonuclease S

Transfer Ribonucleic Acid (tRNA)

Aspartate Transcarbamoylase (ATCase)

Myoglobin

Immunoglobulin G (IgG)

B-DNA

Collagen

Oxyhemoglobin

Carboxypeptidase A

Tomato Bushy Stunt Virus (TBSV)

Deoxyribonucleic Acid (DNA)

DPG-Hemoglobin Complex

Hemoglobin

Cytochrome c

Trypsin

Hemoglobin (1000)

Lysozyme (488)

Lac Repressor

Crambin

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

Coronavirus Life Cycle

Excitatory and Inhibitory Synapses

Ebola Virus

Myoglobin in a Whale Muscle Cell

SARS-CoV-2 Fusion

Last Universal Common Ancestor

Caulobacter Polar Microdomain

Transfer RNA and Gag Protein

SARS-CoV-2 mRNA Vaccine

Zika Virus

Cellulose Synthase

CytoSkeleton

Model of a Mycoplasma Cell

Biosites: Muscle

Biosites: Basement Membrane

JCVI-syn3A Minimal Cell

Myelin

Poliovirus Neutralization

Collagen and Extracellular Matrix

Lipid Droplets

Red Blood Cell Cytoskeleton

HIV in Blood Plasma

Coronavirus

Casein Micelle and Fat Globule in Milk

Biosites: Blood Plasma

Insulin Action

Biosites: Nucleus

Escherichia coli Bacterium

Biosites: Cytoplasm

Influenza Vaccine

Respiratory Droplet

Chloroplast

Blood

RecA and DNA

Phage-based COVID-19 Vaccine

Biosites: Red Blood Cell

Autophagy

Abiogenesis

Escherichia coli

Kinetochore

Mycoplasma mycoides

Bacteriophage T4 Infection

HIV Vaccine

Immunological Synapse

Measles Virus Proteins

SARS-CoV-2 and Neutralizing Antibodies

Insulin Release

HIV-Infected Cell