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.

Oxyhemoglobin

Cytochrome c

Deoxyribonucleic Acid (DNA)

Intermolecular Contacts in Hemoglobin S

Lysozyme (512)

Hemoglobin (1000)

Hemoglobin S

Myoglobin Fold

DPG-Hemoglobin Complex

Lysozyme (488)

TATA-Binding Protein (TBP)

Crambin

A-DNA

Cytochrome c (unbound)

Myoglobin

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

Transfer Ribonucleic Acid (tRNA)

Hemoglobin

DNA

Myohemerythrin

Immunoglobulin G (IgG)

Deoxyhemoglobin

B-DNA

Aspartate Transcarbamoylase (ATCase)

Collagen

Z-DNA

Trypsin

Induced Lac Repressor

Carboxypeptidase A

Ribonuclease S

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

HIV in Blood Plasma

Myelin

Immunological Synapse

HIV Vaccine

Mycoplasma mycoides

Caulobacter Polar Microdomain

Transfer RNA and Gag Protein

Chloroplast

Red Blood Cell Cytoskeleton

Bacteriophage T4 Infection

Biosites: Muscle

Influenza Virus

Model of a Mycoplasma Cell

Escherichia coli Bacterium

HIV-Infected Cell

SARS-CoV-2 Fusion

SARS-CoV-2 mRNA Vaccine

Lipid Droplets

Biosites: Blood Plasma

Autophagy

Last Universal Common Ancestor

Poliovirus Neutralization

Myoglobin in a Whale Muscle Cell

Excitatory and Inhibitory Synapses

SARS-CoV-2 and Neutralizing Antibodies

Ebola Virus

Biosites: Red Blood Cell

Collagen and Extracellular Matrix

Phage-based COVID-19 Vaccine

Abiogenesis

Respiratory Droplet

Casein Micelle and Fat Globule in Milk

RecA and DNA

Blood

Vascular Endothelial Growth Factor (VegF) Signaling

Cellulose Synthase

Biosites: Basement Membrane

Insulin Release

Measles Virus Proteins

Coronavirus

Influenza Vaccine

Biosites: Nucleus

CytoSkeleton

Biosites: Cytoplasm

JCVI-syn3A Minimal Cell

Escherichia coli

Insulin Action

Coronavirus Life Cycle

Zika Virus

Kinetochore