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.

Collagen

Hemoglobin S

Aspartate Transcarbamoylase (ATCase)

Intermolecular Contacts in Hemoglobin S

Myohemerythrin

Myoglobin Fold

DPG-Hemoglobin Complex

Cytochrome c

Cytochrome c (unbound)

Immunoglobulin G (IgG)

Oxyhemoglobin

TATA-Binding Protein (TBP)

Hemoglobin (1000)

Lysozyme (488)

Lac Repressor

Z-DNA

Tomato Bushy Stunt Virus (TBSV)

B-DNA

Transfer Ribonucleic Acid (tRNA)

Ribonuclease S

Hemoglobin

Lysozyme (512)

A-DNA

Carboxypeptidase A

Trypsin

Crambin

Induced Lac Repressor

Deoxyribonucleic Acid (DNA)

Myoglobin

Deoxyhemoglobin

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

JCVI-syn3A Minimal Cell

SARS-CoV-2 and Neutralizing Antibodies

Ebola Virus

Chloroplast

Myoglobin in a Whale Muscle Cell

Biosites: Nucleus

Poliovirus Neutralization

Coronavirus Life Cycle

Last Universal Common Ancestor

Biosites: Blood Plasma

Vascular Endothelial Growth Factor (VegF) Signaling

Myelin

Blood

Coronavirus

Abiogenesis

Biosites: Red Blood Cell

Immunological Synapse

Zika Virus

Measles Virus Proteins

Bacteriophage T4 Infection

Mycoplasma mycoides

Caulobacter Polar Microdomain

Insulin Action

CytoSkeleton

Kinetochore

HIV Vaccine

Biosites: Cytoplasm

HIV-Infected Cell

SARS-CoV-2 mRNA Vaccine

Escherichia coli Bacterium

Red Blood Cell Cytoskeleton

Transfer RNA and Gag Protein

Casein Micelle and Fat Globule in Milk

Respiratory Droplet

SARS-CoV-2 Fusion

Cellulose Synthase

Lipid Droplets

Autophagy

Biosites: Basement Membrane

Model of a Mycoplasma Cell

HIV in Blood Plasma

Collagen and Extracellular Matrix

Insulin Release

Phage-based COVID-19 Vaccine

Influenza Virus

Biosites: Muscle

Excitatory and Inhibitory Synapses

RecA and DNA

Escherichia coli

Influenza Vaccine