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.

Lysozyme (488)

Myoglobin

Cytochrome c (unbound)

Cytochrome c

TATA-Binding Protein (TBP)

Tomato Bushy Stunt Virus (TBSV)

Oxyhemoglobin

A-DNA

Induced Lac Repressor

Hemoglobin S

Immunoglobulin G (IgG)

Deoxyribonucleic Acid (DNA)

Hemoglobin

Lac Repressor

Lysozyme (512)

DPG-Hemoglobin Complex

Collagen

Ribonuclease S

Crambin

Aspartate Transcarbamoylase (ATCase)

Myoglobin Fold

Myohemerythrin

B-DNA

Z-DNA

Deoxyhemoglobin

Carboxypeptidase A

Trypsin

DNA

Intermolecular Contacts in Hemoglobin S

Transfer Ribonucleic Acid (tRNA)

Hemoglobin (1000)

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

Escherichia coli

Influenza Vaccine

Excitatory and Inhibitory Synapses

Mycoplasma mycoides

Caulobacter Polar Microdomain

SARS-CoV-2 and Neutralizing Antibodies

Red Blood Cell Cytoskeleton

Last Universal Common Ancestor

Myelin

Poliovirus Neutralization

HIV Vaccine

Cellulose Synthase

Biosites: Red Blood Cell

Influenza Virus

SARS-CoV-2 Fusion

Measles Virus Proteins

Autophagy

Insulin Release

Blood

JCVI-syn3A Minimal Cell

Coronavirus

Ebola Virus

Immunological Synapse

Biosites: Cytoplasm

Escherichia coli Bacterium

Respiratory Droplet

Biosites: Nucleus

Lipid Droplets

Bacteriophage T4 Infection

Abiogenesis

Biosites: Basement Membrane

Insulin Action

SARS-CoV-2 mRNA Vaccine

Casein Micelle and Fat Globule in Milk

HIV in Blood Plasma

HIV-Infected Cell

Transfer RNA and Gag Protein

Chloroplast

Zika Virus

Coronavirus Life Cycle

RecA and DNA

Biosites: Muscle

Phage-based COVID-19 Vaccine

CytoSkeleton

Biosites: Blood Plasma

Kinetochore

Vascular Endothelial Growth Factor (VegF) Signaling

Model of a Mycoplasma Cell

Collagen and Extracellular Matrix

Myoglobin in a Whale Muscle Cell