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.

Cytochrome c (unbound)

TATA-Binding Protein (TBP)

Oxyhemoglobin

Hemoglobin S

Myoglobin

Deoxyribonucleic Acid (DNA)

Lysozyme (512)

Lysozyme (488)

Deoxyhemoglobin

Crambin

DNA

Aspartate Transcarbamoylase (ATCase)

Ribonuclease S

Tomato Bushy Stunt Virus (TBSV)

Transfer Ribonucleic Acid (tRNA)

A-DNA

Cytochrome c

Lac Repressor

Myohemerythrin

B-DNA

Myoglobin Fold

Intermolecular Contacts in Hemoglobin S

Immunoglobulin G (IgG)

Hemoglobin

Trypsin

Hemoglobin (1000)

Induced Lac Repressor

Carboxypeptidase A

Z-DNA

DPG-Hemoglobin Complex

Collagen

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

Insulin Release

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Red Blood Cell

Coronavirus

Influenza Vaccine

Chloroplast

RecA and DNA

Influenza Virus

Blood

HIV in Blood Plasma

Myoglobin in a Whale Muscle Cell

Coronavirus Life Cycle

Lipid Droplets

CytoSkeleton

Autophagy

Vascular Endothelial Growth Factor (VegF) Signaling

HIV-Infected Cell

Measles Virus Proteins

Abiogenesis

Bacteriophage T4 Infection

Zika Virus

Poliovirus Neutralization

Excitatory and Inhibitory Synapses

Mycoplasma mycoides

SARS-CoV-2 Fusion

Cellulose Synthase

Caulobacter Polar Microdomain

Kinetochore

Myelin

Immunological Synapse

Biosites: Nucleus

Escherichia coli Bacterium

Model of a Mycoplasma Cell

HIV Vaccine

Biosites: Blood Plasma

Biosites: Cytoplasm

Respiratory Droplet

Escherichia coli

SARS-CoV-2 mRNA Vaccine

Collagen and Extracellular Matrix

JCVI-syn3A Minimal Cell

Casein Micelle and Fat Globule in Milk

Biosites: Muscle

Biosites: Basement Membrane

Last Universal Common Ancestor

Ebola Virus

Insulin Action

Red Blood Cell Cytoskeleton

Transfer RNA and Gag Protein

Phage-based COVID-19 Vaccine